Enable `no_useless_else` rule in php-cs-fixer (#14420)

build/controllers/Utf8Controller.php

@@ -119,8 +119,8 @@ class Utf8Controller extends Controller
             return ($h & 0x0F) << 18 | (ord($c[1]) & 0x3F) << 12
                                      | (ord($c[2]) & 0x3F) << 6
                                      | (ord($c[3]) & 0x3F);
-        } else {
-            return false;
         }
+
+        return false;
     }
 }

cs/src/YiiConfig.php

@@ -91,7 +91,7 @@ class YiiConfig extends Config
             'no_trailing_comma_in_singleline_array' => true,
             'no_unneeded_control_parentheses' => true,
             'no_unused_imports' => true,
-//            'no_useless_else' => true, // needs more discussion
+            'no_useless_else' => true,
             'no_useless_return' => true,
             'no_whitespace_before_comma_in_array' => true,
             'no_whitespace_in_blank_line' => true,

framework/base/Action.php

@@ -95,9 +95,9 @@ class Action extends Component
             $this->afterRun();
 
             return $result;
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**

framework/base/Application.php

@@ -651,9 +651,9 @@ abstract class Application extends Module
 
         if (YII_ENV_TEST) {
             throw new ExitException($status);
-        } else {
-            exit($status);
         }
+
+        exit($status);
     }
 
     /**

framework/base/DynamicModel.php

@@ -82,9 +82,9 @@ class DynamicModel extends Model
     {
         if (array_key_exists($name, $this->_attributes)) {
             return $this->_attributes[$name];
-        } else {
-            return parent::__get($name);
         }
+
+        return parent::__get($name);
     }
 
     /**
@@ -106,9 +106,9 @@ class DynamicModel extends Model
     {
         if (array_key_exists($name, $this->_attributes)) {
             return isset($this->_attributes[$name]);
-        } else {
-            return parent::__isset($name);
         }
+
+        return parent::__isset($name);
     }
 
     /**

framework/base/Object.php

@@ -134,9 +134,9 @@ class Object implements Configurable
             return $this->$getter();
         } elseif (method_exists($this, 'set' . $name)) {
             throw new InvalidCallException('Getting write-only property: ' . get_class($this) . '::' . $name);
-        } else {
-            throw new UnknownPropertyException('Getting unknown property: ' . get_class($this) . '::' . $name);
         }
+
+        throw new UnknownPropertyException('Getting unknown property: ' . get_class($this) . '::' . $name);
     }
 
     /**
@@ -178,9 +178,9 @@ class Object implements Configurable
         $getter = 'get' . $name;
         if (method_exists($this, $getter)) {
             return $this->$getter() !== null;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**

framework/base/Theme.php

@@ -166,9 +166,9 @@ class Theme extends Component
     {
         if (($baseUrl = $this->getBaseUrl()) !== null) {
             return $baseUrl . '/' . ltrim($url, '/');
-        } else {
-            throw new InvalidConfigException('The "baseUrl" property must be set.');
         }
+
+        throw new InvalidConfigException('The "baseUrl" property must be set.');
     }
 
     /**
@@ -181,8 +181,8 @@ class Theme extends Component
     {
         if (($basePath = $this->getBasePath()) !== null) {
             return $basePath . DIRECTORY_SEPARATOR . ltrim($path, '/\\');
-        } else {
-            throw new InvalidConfigException('The "basePath" property must be set.');
         }
+
+        throw new InvalidConfigException('The "basePath" property must be set.');
     }
 }

framework/base/Widget.php

@@ -111,13 +111,13 @@ class Widget extends Component implements ViewContextInterface
                     echo $result;
                 }
                 return $widget;
-            } else {
+            }
+
             throw new InvalidCallException('Expecting end() of ' . get_class($widget) . ', found ' . get_called_class());
         }
-        } else {
+
         throw new InvalidCallException('Unexpected ' . get_called_class() . '::end() call. A matching begin() is not found.');
     }
-    }
 
     /**
      * Creates a widget instance and runs it.

framework/caching/Cache.php

@@ -121,9 +121,9 @@ abstract class Cache extends Component implements CacheInterface
         }
         if (is_array($value) && !($value[1] instanceof Dependency && $value[1]->isChanged($this))) {
             return $value[0];
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**

framework/caching/FileCache.php

@@ -150,12 +150,12 @@ class FileCache extends Cache
             }
 
             return @touch($cacheFile, $duration + time());
-        } else {
+        }
+
         $error = error_get_last();
         Yii::warning("Unable to write cache file '{$cacheFile}': {$error['message']}", __METHOD__);
         return false;
     }
-    }
 
     /**
      * Stores a value identified by a key into cache if the cache does not contain this key.
@@ -206,9 +206,9 @@ class FileCache extends Cache
             }
 
             return $base . DIRECTORY_SEPARATOR . $key . $this->cacheFileSuffix;
-        } else {
-            return $this->cachePath . DIRECTORY_SEPARATOR . $key . $this->cacheFileSuffix;
         }
+
+        return $this->cachePath . DIRECTORY_SEPARATOR . $key . $this->cacheFileSuffix;
     }
 
     /**

framework/caching/MemCache.php

@@ -317,9 +317,9 @@ class MemCache extends Cache
             // Memcached::setMulti() returns boolean
             // @see http://php.net/manual/en/memcached.setmulti.php
             return $this->_cache->setMulti($data, $expire) ? [] : array_keys($data);
-        } else {
-            return parent::setValues($data, $duration);
         }
+
+        return parent::setValues($data, $duration);
     }
 
     /**

framework/captcha/CaptchaAction.php

@@ -134,12 +134,13 @@ class CaptchaAction extends Action
                 // when src attribute of image tag is changed
                 'url' => Url::to([$this->id, 'v' => uniqid()]),
             ];
-        } else {
+        }
+
         $this->setHttpHeaders();
         Yii::$app->response->format = Response::FORMAT_RAW;
+
         return $this->renderImage($this->getVerifyCode());
     }
-    }
 
     /**
      * Generates a hash code that can be used for client-side validation.
@@ -255,9 +256,9 @@ class CaptchaAction extends Action
             return $this->renderImageByGD($code);
         } elseif ($imageLibrary === 'imagick') {
             return $this->renderImageByImagick($code);
-        } else {
-            throw new InvalidConfigException("Defined library '{$imageLibrary}' is not supported");
         }
+
+        throw new InvalidConfigException("Defined library '{$imageLibrary}' is not supported");
     }
 
     /**

framework/console/Application.php

@@ -106,9 +106,9 @@ class Application extends \yii\base\Application
                     $path = substr($param, strlen($option));
                     if (!empty($path) && is_file($file = Yii::getAlias($path))) {
                         return require($file);
-                    } else {
-                        exit("The configuration file does not exist: $path\n");
                     }
+
+                    exit("The configuration file does not exist: $path\n");
                 }
             }
         }
@@ -147,13 +147,13 @@ class Application extends \yii\base\Application
         $result = $this->runAction($route, $params);
         if ($result instanceof Response) {
             return $result;
-        } else {
+        }
+
         $response = $this->getResponse();
         $response->exitStatus = $result;
 
         return $response;
     }
-    }
 
     /**
      * Runs a controller action specified by a route.

framework/console/controllers/AssetController.php

@@ -320,9 +320,9 @@ class AssetController extends Controller
             usort($target['depends'], function ($a, $b) use ($bundleOrders) {
                 if ($bundleOrders[$a] == $bundleOrders[$b]) {
                     return 0;
-                } else {
-                    return $bundleOrders[$a] > $bundleOrders[$b] ? 1 : -1;
                 }
+
+                return $bundleOrders[$a] > $bundleOrders[$b] ? 1 : -1;
             });
             if (!isset($target['class'])) {
                 $target['class'] = $name;
@@ -732,11 +732,11 @@ EOD;
         }
         if (!file_put_contents($configFile, $template)) {
             throw new Exception("Unable to write template file '{$configFile}'.");
-        } else {
+        }
+
         $this->stdout("Configuration file template created at '{$configFile}'.\n\n", Console::FG_GREEN);
         return self::EXIT_CODE_NORMAL;
     }
-    }
 
     /**
      * Returns canonicalized absolute pathname.

framework/console/controllers/BaseMigrateController.php

@@ -130,9 +130,9 @@ abstract class BaseMigrateController extends Controller
             $this->stdout("Yii Migration Tool (based on Yii v{$version})\n\n");
 
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -673,13 +673,13 @@ abstract class BaseMigrateController extends Controller
             $this->stdout("*** applied $class (time: " . sprintf('%.3f', $time) . "s)\n\n", Console::FG_GREEN);
 
             return true;
-        } else {
+        }
+
         $time = microtime(true) - $start;
         $this->stdout("*** failed to apply $class (time: " . sprintf('%.3f', $time) . "s)\n\n", Console::FG_RED);
 
         return false;
     }
-    }
 
     /**
      * Downgrades with the specified migration class.
@@ -701,13 +701,13 @@ abstract class BaseMigrateController extends Controller
             $this->stdout("*** reverted $class (time: " . sprintf('%.3f', $time) . "s)\n\n", Console::FG_GREEN);
 
             return true;
-        } else {
+        }
+
         $time = microtime(true) - $start;
         $this->stdout("*** failed to revert $class (time: " . sprintf('%.3f', $time) . "s)\n\n", Console::FG_RED);
 
         return false;
     }
-    }
 
     /**
      * Creates a new migration instance.

framework/console/controllers/HelpController.php

@@ -273,9 +273,9 @@ class HelpController extends Controller
         if (class_exists($controllerClass)) {
             $class = new \ReflectionClass($controllerClass);
             return !$class->isAbstract() && $class->isSubclassOf('yii\console\Controller');
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**

framework/console/controllers/MigrateController.php

@@ -170,9 +170,9 @@ class MigrateController extends BaseMigrateController
                 $this->db = Instance::ensure($this->db, Connection::className());
             }
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**

framework/data/ActiveDataProvider.php

@@ -152,9 +152,9 @@ class ActiveDataProvider extends BaseDataProvider
             }
 
             return $keys;
-        } else {
-            return array_keys($models);
         }
+
+        return array_keys($models);
     }
 
     /**

framework/data/ArrayDataProvider.php

@@ -113,9 +113,9 @@ class ArrayDataProvider extends BaseDataProvider
             }
 
             return $keys;
-        } else {
-            return array_keys($models);
         }
+
+        return array_keys($models);
     }
 
     /**

framework/data/Pagination.php

@@ -153,12 +153,12 @@ class Pagination extends Object implements Linkable
         $pageSize = $this->getPageSize();
         if ($pageSize < 1) {
             return $this->totalCount > 0 ? 1 : 0;
-        } else {
+        }
+
         $totalCount = $this->totalCount < 0 ? 0 : (int) $this->totalCount;
 
         return (int) (($totalCount + $pageSize - 1) / $pageSize);
     }
-    }
 
     private $_page;
 
@@ -281,9 +281,9 @@ class Pagination extends Object implements Linkable
         $urlManager = $this->urlManager === null ? Yii::$app->getUrlManager() : $this->urlManager;
         if ($absolute) {
             return $urlManager->createAbsoluteUrl($params);
-        } else {
-            return $urlManager->createUrl($params);
         }
+
+        return $urlManager->createUrl($params);
     }
 
     /**

framework/data/Sort.php

@@ -412,9 +412,9 @@ class Sort extends Object
         $urlManager = $this->urlManager === null ? Yii::$app->getUrlManager() : $this->urlManager;
         if ($absolute) {
             return $urlManager->createAbsoluteUrl($params);
-        } else {
-            return $urlManager->createUrl($params);
         }
+
+        return $urlManager->createUrl($params);
     }
 
     /**

framework/db/ActiveQuery.php

@@ -295,9 +295,9 @@ class ActiveQuery extends Query implements ActiveQueryInterface
         if ($row !== false) {
             $models = $this->populate([$row]);
             return reset($models) ?: null;
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**
@@ -545,9 +545,9 @@ class ActiveQuery extends Query implements ActiveQueryInterface
     {
         if (is_array($joinType) && isset($joinType[$name])) {
             return $joinType[$name];
-        } else {
-            return is_string($joinType) ? $joinType : 'INNER JOIN';
         }
+
+        return is_string($joinType) ? $joinType : 'INNER JOIN';
     }
 
     /**
@@ -564,9 +564,8 @@ class ActiveQuery extends Query implements ActiveQueryInterface
             foreach ($this->from as $alias => $tableName) {
                 if (is_string($alias)) {
                     return [$tableName, $alias];
-                } else {
-                    break;
                 }
+                break;
             }
         }
 

framework/db/ActiveRelationTrait.php

@@ -232,7 +232,8 @@ trait ActiveRelationTrait
             }
 
             return [$model];
-        } else {
+        }
+
         // https://github.com/yiisoft/yii2/issues/3197
         // delay indexing related models after buckets are built
         $indexBy = $this->indexBy;
@@ -283,7 +284,6 @@ trait ActiveRelationTrait
 
         return $models;
     }
-    }
 
     /**
      * @param ActiveRecordInterface[] $primaryModels primary models

framework/db/BaseActiveRecord.php

@@ -278,17 +278,17 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
             return $this->_attributes[$name];
         } elseif ($this->hasAttribute($name)) {
             return null;
-        } else {
+        }
+
         if (isset($this->_related[$name]) || array_key_exists($name, $this->_related)) {
             return $this->_related[$name];
         }
         $value = parent::__get($name);
         if ($value instanceof ActiveQueryInterface) {
             return $this->_related[$name] = $value->findFor($name, $this);
-            } else {
-                return $value;
-            }
         }
+
+        return $value;
     }
 
     /**
@@ -575,13 +575,13 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
         if (isset($this->_attributes[$name], $this->_oldAttributes[$name])) {
             if ($identical) {
                 return $this->_attributes[$name] !== $this->_oldAttributes[$name];
-            } else {
+            }
+
             return $this->_attributes[$name] != $this->_oldAttributes[$name];
         }
-        } else {
+
         return isset($this->_attributes[$name]) || isset($this->_oldAttributes[$name]);
     }
-    }
 
     /**
      * Returns the attribute values that have been modified since they are loaded or saved most recently.
@@ -641,9 +641,9 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
     {
         if ($this->getIsNewRecord()) {
             return $this->insert($runValidation, $attributeNames);
-        } else {
-            return $this->update($runValidation, $attributeNames) !== false;
         }
+
+        return $this->update($runValidation, $attributeNames) !== false;
     }
 
     /**
@@ -819,10 +819,11 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
                 }
                 $this->_oldAttributes[$name] = $this->_attributes[$name];
             }
+
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -1074,7 +1075,8 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
         $keys = $this->primaryKey();
         if (!$asArray && count($keys) === 1) {
             return isset($this->_attributes[$keys[0]]) ? $this->_attributes[$keys[0]] : null;
-        } else {
+        }
+
         $values = [];
         foreach ($keys as $name) {
             $values[$name] = isset($this->_attributes[$name]) ? $this->_attributes[$name] : null;
@@ -1082,7 +1084,6 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
 
         return $values;
     }
-    }
 
     /**
      * Returns the old primary key value(s).
@@ -1108,7 +1109,8 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
         }
         if (!$asArray && count($keys) === 1) {
             return isset($this->_oldAttributes[$keys[0]]) ? $this->_oldAttributes[$keys[0]] : null;
-        } else {
+        }
+
         $values = [];
         foreach ($keys as $name) {
             $values[$name] = isset($this->_oldAttributes[$name]) ? $this->_oldAttributes[$name] : null;
@@ -1116,7 +1118,6 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
 
         return $values;
     }
-    }
 
     /**
      * Populates an active record object using a row of data from the database/storage.
@@ -1193,16 +1194,16 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
         } catch (UnknownMethodException $e) {
             if ($throwException) {
                 throw new InvalidParamException(get_class($this) . ' has no relation named "' . $name . '".', 0, $e);
-            } else {
-                return null;
             }
+
+            return null;
         }
         if (!$relation instanceof ActiveQueryInterface) {
             if ($throwException) {
                 throw new InvalidParamException(get_class($this) . ' has no relation named "' . $name . '".');
-            } else {
-                return null;
             }
+
+            return null;
         }
 
         if (method_exists($this, $getter)) {
@@ -1212,9 +1213,9 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
             if ($realName !== $name) {
                 if ($throwException) {
                     throw new InvalidParamException('Relation names are case sensitive. ' . get_class($this) . " has a relation named \"$realName\" instead of \"$name\".");
-                } else {
-                    return null;
                 }
+
+                return null;
             }
         }
 
@@ -1538,9 +1539,9 @@ abstract class BaseActiveRecord extends Model implements ActiveRecordInterface
         $pks = static::primaryKey();
         if (count($keys) === count($pks)) {
             return count(array_intersect($keys, $pks)) === count($pks);
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**

framework/db/ColumnSchemaBuilder.php

@@ -312,9 +312,9 @@ class ColumnSchemaBuilder extends Object
             return ' NOT NULL';
         } elseif ($this->isNotNull === false) {
             return ' NULL';
-        } else {
-            return '';
         }
+
+        return '';
     }
 
     /**

framework/db/Command.php

@@ -388,9 +388,9 @@ class Command extends Component
         $result = $this->queryInternal('fetchColumn', 0);
         if (is_resource($result) && get_resource_type($result) === 'stream') {
             return stream_get_contents($result);
-        } else {
-            return $result;
         }
+
+        return $result;
     }
 
     /**
@@ -985,9 +985,9 @@ class Command extends Component
         }
         if (!$this->db->enableProfiling) {
             return [false, isset($rawSql) ? $rawSql : null];
-        } else {
-            return [true, isset($rawSql) ? $rawSql : $this->getRawSql()];
         }
+
+        return [true, isset($rawSql) ? $rawSql : $this->getRawSql()];
     }
 
     /**

framework/db/Connection.php

@@ -564,9 +564,9 @@ class Connection extends Component
             if ($db !== null) {
                 $this->pdo = $db->pdo;
                 return;
-            } else {
-                throw new InvalidConfigException('None of the master DB servers is available.');
             }
+
+            throw new InvalidConfigException('None of the master DB servers is available.');
         }
 
         if (empty($this->dsn)) {
@@ -768,17 +768,17 @@ class Connection extends Component
     {
         if ($this->_schema !== null) {
             return $this->_schema;
-        } else {
+        }
+
         $driver = $this->getDriverName();
         if (isset($this->schemaMap[$driver])) {
             $config = !is_array($this->schemaMap[$driver]) ? ['class' => $this->schemaMap[$driver]] : $this->schemaMap[$driver];
             $config['db'] = $this;
 
             return $this->_schema = Yii::createObject($config);
-            } else {
-                throw new NotSupportedException("Connection does not support reading schema information for '$driver' DBMS.");
-            }
         }
+
+        throw new NotSupportedException("Connection does not support reading schema information for '$driver' DBMS.");
     }
 
     /**
@@ -866,9 +866,9 @@ class Connection extends Component
             function ($matches) {
                 if (isset($matches[3])) {
                     return $this->quoteColumnName($matches[3]);
-                } else {
-                    return str_replace('%', $this->tablePrefix, $this->quoteTableName($matches[2]));
                 }
+
+                return str_replace('%', $this->tablePrefix, $this->quoteTableName($matches[2]));
             },
             $sql
         );
@@ -913,9 +913,9 @@ class Connection extends Component
         $db = $this->getSlave(false);
         if ($db === null) {
             return $fallbackToMaster ? $this->getMasterPdo() : null;
-        } else {
-            return $db->pdo;
         }
+
+        return $db->pdo;
     }
 
     /**

framework/db/Query.php

@@ -431,13 +431,14 @@ class Query extends Component implements QueryInterface
             $this->offset = $offset;
 
             return $command->queryScalar();
-        } else {
+        }
-            return (new self())->select([$selectExpression])
+
+        return (new self())
+            ->select([$selectExpression])
             ->from(['c' => $this])
             ->createCommand($db)
             ->queryScalar();
     }
-    }
 
     /**
      * Sets the SELECT part of the query.

framework/db/QueryBuilder.php

@@ -1135,9 +1135,9 @@ class QueryBuilder extends \yii\base\Object
         if (!is_array($columns)) {
             if (strpos($columns, '(') !== false) {
                 return $columns;
-            } else {
-                $columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY);
             }
+
+            $columns = preg_split('/\s*,\s*/', $columns, -1, PREG_SPLIT_NO_EMPTY);
         }
         foreach ($columns as $i => $column) {
             if ($column instanceof Expression) {
@@ -1179,9 +1179,10 @@ class QueryBuilder extends \yii\base\Object
             }
             array_shift($condition);
             return $this->$method($operator, $condition, $params);
-        } else { // hash format: 'column1' => 'value1', 'column2' => 'value2', ...
-            return $this->buildHashCondition($condition, $params);
         }
+
+        // hash format: 'column1' => 'value1', 'column2' => 'value2', ...
+        return $this->buildHashCondition($condition, $params);
     }
 
     /**
@@ -1244,9 +1245,9 @@ class QueryBuilder extends \yii\base\Object
         }
         if (!empty($parts)) {
             return '(' . implode(") $operator (", $parts) . ')';
-        } else {
-            return '';
         }
+
+        return '';
     }
 
     /**
@@ -1384,11 +1385,11 @@ class QueryBuilder extends \yii\base\Object
 
         if (count($sqlValues) > 1) {
             return "$column $operator (" . implode(', ', $sqlValues) . ')';
-        } else {
+        }
+
         $operator = $operator === 'IN' ? '=' : '<>';
         return $column . $operator . reset($sqlValues);
     }
-    }
 
     /**
      * Builds SQL for IN condition
@@ -1409,13 +1410,14 @@ class QueryBuilder extends \yii\base\Object
                 }
             }
             return '(' . implode(', ', $columns) . ") $operator ($sql)";
-        } else {
+        }
+
         if (strpos($columns, '(') === false) {
             $columns = $this->db->quoteColumnName($columns);
         }
+
         return "$columns $operator ($sql)";
     }
-    }
 
     /**
      * Builds SQL for IN condition
@@ -1539,9 +1541,9 @@ class QueryBuilder extends \yii\base\Object
         if ($operands[0] instanceof Query) {
             list($sql, $params) = $this->build($operands[0], $params);
             return "$operator ($sql)";
-        } else {
-            throw new InvalidParamException('Subquery for EXISTS operator must be a Query object.');
         }
+
+        throw new InvalidParamException('Subquery for EXISTS operator must be a Query object.');
     }
 
     /**
@@ -1574,12 +1576,12 @@ class QueryBuilder extends \yii\base\Object
         } elseif ($value instanceof Query) {
             list($sql, $params) = $this->build($value, $params);
             return "$column $operator ($sql)";
-        } else {
+        }
+
         $phName = self::PARAM_PREFIX . count($params);
         $params[$phName] = $value;
         return "$column $operator $phName";
     }
-    }
 
     /**
      * Creates a SELECT EXISTS() SQL statement.

framework/db/QueryTrait.php

@@ -360,7 +360,8 @@ trait QueryTrait
             return [$columns];
         } elseif (is_array($columns)) {
             return $columns;
-        } else {
+        }
+
         $columns = preg_split('/\s*,\s*/', trim($columns), -1, PREG_SPLIT_NO_EMPTY);
         $result = [];
         foreach ($columns as $column) {
@@ -370,9 +371,9 @@ trait QueryTrait
                 $result[$column] = SORT_ASC;
             }
         }
+
         return $result;
     }
-    }
 
     /**
      * Sets the LIMIT part of the query.

framework/db/Schema.php

@@ -345,9 +345,9 @@ abstract class Schema extends Object
     {
         if ($this->db->isActive) {
             return $this->db->pdo->lastInsertId($sequenceName === '' ? null : $this->quoteTableName($sequenceName));
-        } else {
-            throw new InvalidCallException('DB Connection is not active.');
         }
+
+        throw new InvalidCallException('DB Connection is not active.');
     }
 
     /**
@@ -417,9 +417,9 @@ abstract class Schema extends Object
             if ($tableSchema->columns[$name]->autoIncrement) {
                 $result[$name] = $this->getLastInsertID($tableSchema->sequenceName);
                 break;
-            } else {
-                $result[$name] = isset($columns[$name]) ? $columns[$name] : $tableSchema->columns[$name]->defaultValue;
             }
+
+            $result[$name] = isset($columns[$name]) ? $columns[$name] : $tableSchema->columns[$name]->defaultValue;
         }
         return $result;
     }
@@ -439,11 +439,11 @@ abstract class Schema extends Object
 
         if (($value = $this->db->getSlavePdo()->quote($str)) !== false) {
             return $value;
-        } else {
+        }
+
         // the driver doesn't support quote (e.g. oci)
         return "'" . addcslashes(str_replace("'", "''", $str), "\000\n\r\\\032") . "'";
     }
-    }
 
     /**
      * Quotes a table name for use in a query.
@@ -533,9 +533,9 @@ abstract class Schema extends Object
             $name = preg_replace('/\\{\\{(.*?)\\}\\}/', '\1', $name);
 
             return str_replace('%', $this->db->tablePrefix, $name);
-        } else {
-            return $name;
         }
+
+        return $name;
     }
 
     /**
@@ -560,13 +560,13 @@ abstract class Schema extends Object
                 return PHP_INT_SIZE === 8 && !$column->unsigned ? 'integer' : 'string';
             } elseif ($column->type === 'integer') {
                 return PHP_INT_SIZE === 4 && $column->unsigned ? 'string' : 'integer';
-            } else {
+            }
+
             return $typeMap[$column->type];
         }
-        } else {
+
         return 'string';
     }
-    }
 
     /**
      * Converts a DB exception to a more concrete one if possible.

framework/db/cubrid/QueryBuilder.php

@@ -84,9 +84,9 @@ class QueryBuilder extends \yii\db\QueryBuilder
             return 'ALTER TABLE ' . $this->db->schema->quoteTableName($tableName) . " AUTO_INCREMENT=$value;";
         } elseif ($table === null) {
             throw new InvalidParamException("Table not found: $tableName");
-        } else {
-            throw new InvalidParamException("There is not sequence associated with table '$tableName'.");
         }
+
+        throw new InvalidParamException("There is not sequence associated with table '$tableName'.");
     }
 
     /**

framework/db/mssql/QueryBuilder.php

@@ -69,9 +69,9 @@ class QueryBuilder extends \yii\db\QueryBuilder
 
         if ($this->isOldMssql()) {
             return $this->oldBuildOrderByAndLimit($sql, $orderBy, $limit, $offset);
-        } else {
-            return $this->newBuildOrderByAndLimit($sql, $orderBy, $limit, $offset);
         }
+
+        return $this->newBuildOrderByAndLimit($sql, $orderBy, $limit, $offset);
     }
 
     /**
@@ -220,9 +220,9 @@ class QueryBuilder extends \yii\db\QueryBuilder
             return "DBCC CHECKIDENT ('{$tableName}', RESEED, {$value})";
         } elseif ($table === null) {
             throw new InvalidParamException("Table not found: $tableName");
-        } else {
-            throw new InvalidParamException("There is not sequence associated with table '$tableName'.");
         }
+
+        throw new InvalidParamException("There is not sequence associated with table '$tableName'.");
     }
 
     /**

framework/db/mysql/QueryBuilder.php

@@ -171,9 +171,9 @@ class QueryBuilder extends \yii\db\QueryBuilder
             return "ALTER TABLE $tableName AUTO_INCREMENT=$value";
         } elseif ($table === null) {
             throw new InvalidParamException("Table not found: $tableName");
-        } else {
-            throw new InvalidParamException("There is no sequence associated with table '$tableName'.");
         }
+
+        throw new InvalidParamException("There is no sequence associated with table '$tableName'.");
     }
 
     /**

framework/db/pgsql/QueryBuilder.php

@@ -173,9 +173,9 @@ class QueryBuilder extends \yii\db\QueryBuilder
             return "SELECT SETVAL('$sequence',$value,false)";
         } elseif ($table === null) {
             throw new InvalidParamException("Table not found: $tableName");
-        } else {
-            throw new InvalidParamException("There is not sequence associated with table '$tableName'.");
         }
+
+        throw new InvalidParamException("There is not sequence associated with table '$tableName'.");
     }
 
     /**

framework/db/sqlite/QueryBuilder.php

@@ -150,9 +150,9 @@ class QueryBuilder extends \yii\db\QueryBuilder
             return "UPDATE sqlite_sequence SET seq='$value' WHERE name='{$table->name}'";
         } elseif ($table === null) {
             throw new InvalidParamException("Table not found: $tableName");
-        } else {
-            throw new InvalidParamException("There is not sequence associated with table '$tableName'.'");
         }
+
+        throw new InvalidParamException("There is not sequence associated with table '$tableName'.'");
     }
 
     /**

framework/di/Container.php

@@ -334,9 +334,9 @@ class Container extends Component
                 }
             }
             return $definition;
-        } else {
-            throw new InvalidConfigException("Unsupported definition type for \"$class\": " . gettype($definition));
         }
+
+        throw new InvalidConfigException("Unsupported definition type for \"$class\": " . gettype($definition));
     }
 
     /**
@@ -379,14 +379,15 @@ class Container extends Component
             // set $config as the last parameter (existing one will be overwritten)
             $dependencies[count($dependencies) - 1] = $config;
             return $reflection->newInstanceArgs($dependencies);
-        } else {
+        }
+
         $object = $reflection->newInstanceArgs($dependencies);
         foreach ($config as $name => $value) {
             $object->$name = $value;
         }
+
         return $object;
     }
-    }
 
     /**
      * Merges the user-specified constructor parameters with the ones registered via [[set()]].
@@ -400,14 +401,15 @@ class Container extends Component
             return $params;
         } elseif (empty($params)) {
             return $this->_params[$class];
-        } else {
+        }
+
         $ps = $this->_params[$class];
         foreach ($params as $index => $value) {
             $ps[$index] = $value;
         }
+
         return $ps;
     }
-    }
 
     /**
      * Returns the dependencies of the specified class.
@@ -494,9 +496,9 @@ class Container extends Component
     {
         if (is_callable($callback)) {
             return call_user_func_array($callback, $this->resolveCallableDependencies($callback, $params));
-        } else {
-            return call_user_func_array($callback, $params);
         }
+
+        return call_user_func_array($callback, $params);
     }
 
     /**

framework/di/Instance.php

@@ -119,9 +119,9 @@ class Instance
             $component = $container->get($class, [], $reference);
             if ($type === null || $component instanceof $type) {
                 return $component;
-            } else {
-                throw new InvalidConfigException('Invalid data type: ' . $class . '. ' . $type . ' is expected.');
             }
+
+            throw new InvalidConfigException('Invalid data type: ' . $class . '. ' . $type . ' is expected.');
         } elseif (empty($reference)) {
             throw new InvalidConfigException('The required component is not specified.');
         }
@@ -140,9 +140,9 @@ class Instance
             }
             if ($type === null || $component instanceof $type) {
                 return $component;
-            } else {
-                throw new InvalidConfigException('"' . $reference->id . '" refers to a ' . get_class($component) . " component. $type is expected.");
             }
+
+            throw new InvalidConfigException('"' . $reference->id . '" refers to a ' . get_class($component) . " component. $type is expected.");
         }
 
         $valueType = is_object($reference) ? get_class($reference) : gettype($reference);
@@ -162,9 +162,9 @@ class Instance
         }
         if (Yii::$app && Yii::$app->has($this->id)) {
             return Yii::$app->get($this->id);
-        } else {
-            return Yii::$container->get($this->id);
         }
+
+        return Yii::$container->get($this->id);
     }
 
     /**

framework/di/ServiceLocator.php

@@ -71,9 +71,9 @@ class ServiceLocator extends Component
     {
         if ($this->has($name)) {
             return $this->get($name);
-        } else {
-            return parent::__get($name);
         }
+
+        return parent::__get($name);
     }
 
     /**
@@ -86,9 +86,9 @@ class ServiceLocator extends Component
     {
         if ($this->has($name)) {
             return true;
-        } else {
-            return parent::__isset($name);
         }
+
+        return parent::__isset($name);
     }
 
     /**
@@ -131,14 +131,14 @@ class ServiceLocator extends Component
             $definition = $this->_definitions[$id];
             if (is_object($definition) && !$definition instanceof Closure) {
                 return $this->_components[$id] = $definition;
-            } else {
-                return $this->_components[$id] = Yii::createObject($definition);
             }
+
+            return $this->_components[$id] = Yii::createObject($definition);
         } elseif ($throwException) {
             throw new InvalidConfigException("Unknown component ID: $id");
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**

framework/filters/ContentNegotiator.php

@@ -176,9 +176,9 @@ class ContentNegotiator extends ActionFilter implements BootstrapInterface
                 $response->acceptMimeType = null;
                 $response->acceptParams = [];
                 return;
-            } else {
-                throw new UnsupportedMediaTypeHttpException('The requested response format is not supported: ' . $format);
             }
+
+            throw new UnsupportedMediaTypeHttpException('The requested response format is not supported: ' . $format);
         }
 
         $types = $request->getAcceptableContentTypes();

framework/filters/HttpCache.php

@@ -171,9 +171,9 @@ class HttpCache extends ActionFilter
             return $etag !== null && in_array($etag, Yii::$app->request->getETags(), true);
         } elseif (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
             return $lastModified !== null && @strtotime($_SERVER['HTTP_IF_MODIFIED_SINCE']) >= $lastModified;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**

framework/filters/PageCache.php

@@ -171,12 +171,12 @@ class PageCache extends ActionFilter
             $response->on(Response::EVENT_AFTER_SEND, [$this, 'cacheResponse']);
             Yii::trace('Valid page content is not found in the cache.', __METHOD__);
             return true;
-        } else {
+        }
+
         $this->restoreResponse($response, $data);
         Yii::trace('Valid page content is found in the cache.', __METHOD__);
         return false;
     }
-    }
 
     /**
      * This method is invoked right before the response caching is to be started.

framework/filters/RateLimiter.php

@@ -120,11 +120,11 @@ class RateLimiter extends ActionFilter
             $user->saveAllowance($request, $action, 0, $current);
             $this->addRateLimitHeaders($response, $limit, 0, $window);
             throw new TooManyRequestsHttpException($this->errorMessage);
-        } else {
+        }
+
         $user->saveAllowance($request, $action, $allowance - 1, $current);
         $this->addRateLimitHeaders($response, $limit, $allowance - 1, (int) (($limit - $allowance) * $window / $limit));
     }
-    }
 
     /**
      * Adds the rate limit headers to the response

framework/filters/auth/AuthMethod.php

@@ -69,12 +69,13 @@ abstract class AuthMethod extends ActionFilter implements AuthInterface
 
         if ($identity !== null || $this->isOptional($action)) {
             return true;
-        } else {
+        }
+
         $this->challenge($response);
         $this->handleFailure($response);
+
         return false;
     }
-    }
 
     /**
      * @inheritdoc

framework/grid/ActionColumn.php

@@ -198,13 +198,13 @@ class ActionColumn extends Column
     {
         if (is_callable($this->urlCreator)) {
             return call_user_func($this->urlCreator, $action, $model, $key, $index, $this);
-        } else {
+        }
+
         $params = is_array($key) ? $key : ['id' => (string) $key];
         $params[0] = $this->controller ? $this->controller . '/' . $action : $action;
 
         return Url::toRoute($params);
     }
-    }
 
     /**
      * @inheritdoc
@@ -225,9 +225,9 @@ class ActionColumn extends Column
             if ($isVisible && isset($this->buttons[$name])) {
                 $url = $this->createUrl($name, $model, $key, $index);
                 return call_user_func($this->buttons[$name], $url, $model, $key);
-            } else {
-                return '';
             }
+
+            return '';
         }, $this->template);
     }
 }

framework/grid/CheckboxColumn.php

@@ -103,9 +103,9 @@ class CheckboxColumn extends Column
     {
         if ($this->header !== null || !$this->multiple) {
             return parent::renderHeaderCellContent();
-        } else {
-            return Html::checkbox($this->getHeaderCheckBoxName(), false, ['class' => 'select-on-check-all']);
         }
+
+        return Html::checkbox($this->getHeaderCheckBoxName(), false, ['class' => 'select-on-check-all']);
     }
 
     /**

framework/grid/Column.php

@@ -162,9 +162,9 @@ class Column extends Object
     {
         if ($this->content !== null) {
             return call_user_func($this->content, $model, $key, $index, $this);
-        } else {
-            return $this->grid->emptyCell;
         }
+
+        return $this->grid->emptyCell;
     }
 
     /**

framework/grid/DataColumn.php

@@ -130,9 +130,9 @@ class DataColumn extends Column
         if ($this->attribute !== null && $this->enableSorting &&
             ($sort = $this->grid->dataProvider->getSort()) !== false && $sort->hasAttribute($this->attribute)) {
             return $sort->link($this->attribute, array_merge($this->sortLinkOptions, ['label' => $label]));
-        } else {
-            return $label;
         }
+
+        return $label;
     }
 
     /**
@@ -197,13 +197,13 @@ class DataColumn extends Column
                     $this->grid->formatter->booleanFormat[0],
                     $this->grid->formatter->booleanFormat[1],
                 ], $options) . $error;
-            } else {
+            }
+
             return Html::activeTextInput($model, $this->attribute, $this->filterInputOptions) . $error;
         }
-        } else {
+
         return parent::renderFilterCellContent();
     }
-    }
 
     /**
      * Returns the data cell value.
@@ -217,9 +217,9 @@ class DataColumn extends Column
         if ($this->value !== null) {
             if (is_string($this->value)) {
                 return ArrayHelper::getValue($model, $this->value);
-            } else {
-                return call_user_func($this->value, $model, $key, $index, $this);
             }
+
+            return call_user_func($this->value, $model, $key, $index, $this);
         } elseif ($this->attribute !== null) {
             return ArrayHelper::getValue($model, $this->attribute);
         }
@@ -233,8 +233,8 @@ class DataColumn extends Column
     {
         if ($this->content === null) {
             return $this->grid->formatter->format($this->getDataCellValue($model, $key, $index), $this->format);
-        } else {
-            return parent::renderDataCellContent($model, $key, $index);
         }
+
+        return parent::renderDataCellContent($model, $key, $index);
     }
 }

framework/grid/GridView.php

@@ -299,9 +299,9 @@ class GridView extends BaseListView
     {
         if ($this->filterModel instanceof Model && $this->filterModel->hasErrors()) {
             return Html::errorSummary($this->filterModel, $this->filterErrorSummaryOptions);
-        } else {
-            return '';
         }
+
+        return '';
     }
 
     /**
@@ -365,9 +365,9 @@ class GridView extends BaseListView
     {
         if (!empty($this->caption)) {
             return Html::tag('caption', $this->caption, $this->captionOptions);
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -391,9 +391,9 @@ class GridView extends BaseListView
             }
 
             return Html::tag('colgroup', implode("\n", $cols));
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -450,9 +450,9 @@ class GridView extends BaseListView
             }
 
             return Html::tag('tr', implode('', $cells), $this->filterRowOptions);
-        } else {
-            return '';
         }
+
+        return '';
     }
 
     /**
@@ -487,9 +487,9 @@ class GridView extends BaseListView
             $colspan = count($this->columns);
 
             return "<tbody>\n<tr><td colspan=\"$colspan\">" . $this->renderEmpty() . "</td></tr>\n</tbody>";
-        } else {
-            return "<tbody>\n" . implode("\n", $rows) . "\n</tbody>";
         }
+
+        return "<tbody>\n" . implode("\n", $rows) . "\n</tbody>";
     }
 
     /**

framework/grid/SerialColumn.php

@@ -43,8 +43,8 @@ class SerialColumn extends Column
         $pagination = $this->grid->dataProvider->getPagination();
         if ($pagination !== false) {
             return $pagination->getOffset() + $index + 1;
-        } else {
-            return $index + 1;
         }
+
+        return $index + 1;
     }
 }

framework/helpers/BaseArrayHelper.php

@@ -94,9 +94,9 @@ class BaseArrayHelper
             }
 
             return $recursive ? static::toArray($result, $properties) : $result;
-        } else {
-            return [$object];
         }
+
+        return [$object];
     }
 
     /**
@@ -209,9 +209,9 @@ class BaseArrayHelper
             return $array->$key;
         } elseif (is_array($array)) {
             return (isset($array[$key]) || array_key_exists($key, $array)) ? $array[$key] : $default;
-        } else {
-            return $default;
         }
+
+        return $default;
     }
 
     /**
@@ -526,7 +526,8 @@ class BaseArrayHelper
             // Function `isset` checks key faster but skips `null`, `array_key_exists` handles this case
             // http://php.net/manual/en/function.array-key-exists.php#107786
             return isset($array[$key]) || array_key_exists($key, $array);
-        } else {
+        }
+
         foreach (array_keys($array) as $k) {
             if (strcasecmp($key, $k) === 0) {
                 return true;
@@ -535,7 +536,6 @@ class BaseArrayHelper
 
         return false;
     }
-    }
 
     /**
      * Sorts an array of objects or arrays (with the same structure) by one or several keys.
@@ -679,15 +679,16 @@ class BaseArrayHelper
                 }
             }
             return true;
-        } else {
+        }
+
         foreach ($array as $key => $value) {
             if (is_string($key)) {
                 return true;
             }
         }
+
         return false;
     }
-    }
 
     /**
      * Returns a value indicating whether the given array is an indexed array.
@@ -714,15 +715,16 @@ class BaseArrayHelper
 
         if ($consecutive) {
             return array_keys($array) === range(0, count($array) - 1);
-        } else {
+        }
+
         foreach ($array as $key => $value) {
             if (!is_int($key)) {
                 return false;
             }
         }
+
         return true;
     }
-    }
 
     /**
      * Check whether an array or [[\Traversable]] contains an element.
@@ -789,10 +791,11 @@ class BaseArrayHelper
                     return false;
                 }
             }
+
             return true;
-        } else {
-            throw new InvalidParamException('Argument $needles must be an array or implement Traversable');
         }
+
+        throw new InvalidParamException('Argument $needles must be an array or implement Traversable');
     }
 
     /**

framework/helpers/BaseFileHelper.php

@@ -104,7 +104,8 @@ class BaseFileHelper
         $desiredFile = dirname($file) . DIRECTORY_SEPARATOR . $language . DIRECTORY_SEPARATOR . basename($file);
         if (is_file($desiredFile)) {
             return $desiredFile;
-        } else {
+        }
+
         $language = substr($language, 0, 2);
         if ($language === $sourceLanguage) {
             return $file;
@@ -113,7 +114,6 @@ class BaseFileHelper
 
         return is_file($desiredFile) ? $desiredFile : $file;
     }
-    }
 
     /**
      * Determines the MIME type of the specified file.
@@ -138,9 +138,9 @@ class BaseFileHelper
         if (!extension_loaded('fileinfo')) {
             if ($checkExtension) {
                 return static::getMimeTypeByExtension($file, $magicFile);
-            } else {
-                throw new InvalidConfigException('The fileinfo PHP extension is not installed.');
             }
+
+            throw new InvalidConfigException('The fileinfo PHP extension is not installed.');
         }
         $info = finfo_open(FILEINFO_MIME_TYPE, $magicFile);
 

framework/helpers/BaseHtml.php

@@ -243,9 +243,9 @@ class BaseHtml
         } elseif (isset($options['noscript']) && $options['noscript'] === true) {
             unset($options['noscript']);
             return '<noscript>' . static::tag('link', '', $options) . '</noscript>';
-        } else {
-            return static::tag('link', '', $options);
         }
+
+        return static::tag('link', '', $options);
     }
 
     /**
@@ -270,9 +270,9 @@ class BaseHtml
             $condition = $options['condition'];
             unset($options['condition']);
             return self::wrapIntoCondition(static::tag('script', '', $options), $condition);
-        } else {
-            return static::tag('script', '', $options);
         }
+
+        return static::tag('script', '', $options);
     }
 
     /**
@@ -300,9 +300,9 @@ class BaseHtml
         if ($request instanceof Request && $request->enableCsrfValidation) {
             return static::tag('meta', '', ['name' => 'csrf-param', 'content' => $request->csrfParam]) . "\n    "
                 . static::tag('meta', '', ['name' => 'csrf-token', 'content' => $request->getCsrfToken()]) . "\n";
-        } else {
-            return '';
         }
+
+        return '';
     }
 
     /**
@@ -764,9 +764,9 @@ class BaseHtml
             unset($options['label'], $options['labelOptions']);
             $content = static::label(static::input($type, $name, $value, $options) . ' ' . $label, null, $labelOptions);
             return $hidden . $content;
-        } else {
-            return $hidden . static::input($type, $name, $value, $options);
         }
+
+        return $hidden . static::input($type, $name, $value, $options);
     }
 
     /**
@@ -1556,9 +1556,9 @@ class BaseHtml
     {
         if (empty($options['multiple'])) {
             return static::activeListInput('dropDownList', $model, $attribute, $items, $options);
-        } else {
-            return static::activeListBox($model, $attribute, $items, $options);
         }
+
+        return static::activeListBox($model, $attribute, $items, $options);
     }
 
     /**
@@ -2080,9 +2080,9 @@ class BaseHtml
     {
         if (preg_match(static::$attributeRegex, $attribute, $matches)) {
             return $matches[2];
-        } else {
-            throw new InvalidParamException('Attribute name must contain word characters only.');
         }
+
+        throw new InvalidParamException('Attribute name must contain word characters only.');
     }
 
     /**
@@ -2161,9 +2161,9 @@ class BaseHtml
             return $attribute . $suffix;
         } elseif ($formName !== '') {
             return $formName . $prefix . "[$attribute]" . $suffix;
-        } else {
-            throw new InvalidParamException(get_class($model) . '::formName() cannot be empty for tabular inputs.');
         }
+
+        throw new InvalidParamException(get_class($model) . '::formName() cannot be empty for tabular inputs.');
     }
 
     /**

framework/helpers/BaseInflector.php

@@ -385,9 +385,9 @@ class BaseInflector
         $regex = $strict ? '/[A-Z]/' : '/(?<![A-Z])[A-Z]/';
         if ($separator === '_') {
             return strtolower(trim(preg_replace($regex, '_\0', $name), '_'));
-        } else {
-            return strtolower(trim(str_replace('_', $separator, preg_replace($regex, $separator . '\0', $name)), $separator));
         }
+
+        return strtolower(trim(str_replace('_', $separator, preg_replace($regex, $separator . '\0', $name)), $separator));
     }
 
     /**
@@ -496,9 +496,9 @@ class BaseInflector
             }
 
             return transliterator_transliterate($transliterator, $string);
-        } else {
-            return strtr($string, static::$transliteration);
         }
+
+        return strtr($string, static::$transliteration);
     }
 
     /**

framework/helpers/BaseStringHelper.php

@@ -86,9 +86,9 @@ class BaseStringHelper
         $pos = mb_strrpos(str_replace('\\', '/', $path), '/');
         if ($pos !== false) {
             return mb_substr($path, 0, $pos);
-        } else {
-            return '';
         }
+
+        return '';
     }
 
     /**
@@ -110,9 +110,9 @@ class BaseStringHelper
 
         if (mb_strlen($string, $encoding ?: Yii::$app->charset) > $length) {
             return rtrim(mb_substr($string, 0, $length, $encoding ?: Yii::$app->charset)) . $suffix;
-        } else {
-            return $string;
         }
+
+        return $string;
     }
 
     /**
@@ -134,9 +134,9 @@ class BaseStringHelper
         $words = preg_split('/(\s+)/u', trim($string), null, PREG_SPLIT_DELIM_CAPTURE);
         if (count($words) / 2 > $count) {
             return implode('', array_slice($words, 0, ($count * 2) - 1)) . $suffix;
-        } else {
-            return $string;
         }
+
+        return $string;
     }
 
     /**
@@ -215,9 +215,9 @@ class BaseStringHelper
         }
         if ($caseSensitive) {
             return strncmp($string, $with, $bytes) === 0;
-        } else {
-            return mb_strtolower(mb_substr($string, 0, $bytes, '8bit'), Yii::$app->charset) === mb_strtolower($with, Yii::$app->charset);
         }
+
+        return mb_strtolower(mb_substr($string, 0, $bytes, '8bit'), Yii::$app->charset) === mb_strtolower($with, Yii::$app->charset);
     }
 
     /**
@@ -240,9 +240,9 @@ class BaseStringHelper
                 return false;
             }
             return substr_compare($string, $with, -$bytes, $bytes) === 0;
-        } else {
-            return mb_strtolower(mb_substr($string, -$bytes, mb_strlen($string, '8bit'), '8bit'), Yii::$app->charset) === mb_strtolower($with, Yii::$app->charset);
         }
+
+        return mb_strtolower(mb_substr($string, -$bytes, mb_strlen($string, '8bit'), '8bit'), Yii::$app->charset) === mb_strtolower($with, Yii::$app->charset);
     }
 
     /**

framework/helpers/BaseUrl.php

@@ -100,9 +100,9 @@ class BaseUrl
 
         if ($scheme !== false) {
             return static::getUrlManager()->createAbsoluteUrl($route, is_string($scheme) ? $scheme : null);
-        } else {
-            return static::getUrlManager()->createUrl($route);
         }
+
+        return static::getUrlManager()->createUrl($route);
     }
 
     /**
@@ -140,11 +140,11 @@ class BaseUrl
         if (strpos($route, '/') === false) {
             // empty or an action ID
             return $route === '' ? Yii::$app->controller->getRoute() : Yii::$app->controller->getUniqueId() . '/' . $route;
-        } else {
+        }
+
         // relative to module
         return ltrim(Yii::$app->controller->module->getUniqueId() . '/' . $route, '/');
     }
-    }
 
     /**
      * Creates a URL based on the given parameters.
@@ -320,9 +320,9 @@ class BaseUrl
     {
         if ($name === null) {
             return Yii::$app->getUser()->getReturnUrl();
-        } else {
-            return Yii::$app->getSession()->get($name);
         }
+
+        return Yii::$app->getSession()->get($name);
     }
 
     /**

framework/i18n/DbMessageSource.php

@@ -127,9 +127,9 @@ class DbMessageSource extends MessageSource
             }
 
             return $messages;
-        } else {
-            return $this->loadMessagesFromDb($category, $language);
         }
+
+        return $this->loadMessagesFromDb($category, $language);
     }
 
     /**

framework/i18n/Formatter.php

@@ -328,9 +328,9 @@ class Formatter extends Component
         $method = 'as' . $format;
         if ($this->hasMethod($method)) {
             return call_user_func_array([$this, $method], $params);
-        } else {
-            throw new InvalidParamException("Unknown format type: $format");
         }
+
+        throw new InvalidParamException("Unknown format type: $format");
     }
 
 
@@ -649,7 +649,8 @@ class Formatter extends Component
                 $timestamp = new DateTime($timestamp->format(DateTime::ISO8601), $timestamp->getTimezone());
             }
             return $formatter->format($timestamp);
-        } else {
+        }
+
         if (strncmp($format, 'php:', 4) === 0) {
             $format = substr($format, 4);
         } else {
@@ -662,9 +663,9 @@ class Formatter extends Component
                 $timestamp->setTimezone(new DateTimeZone($timeZone));
             }
         }
+
         return $timestamp->format($format);
     }
-    }
 
     /**
      * Normalizes the given datetime value as a DateTime object that can be taken by various date/time formatting methods.
@@ -718,9 +719,9 @@ class Formatter extends Component
                     !($info['hour'] === false && $info['minute'] === false && $info['second'] === false),
                     !($info['year'] === false && $info['month'] === false && $info['day'] === false),
                 ];
-            } else {
-                return new DateTime($value, new DateTimeZone($this->defaultTimeZone));
             }
+
+            return new DateTime($value, new DateTimeZone($this->defaultTimeZone));
         } catch (\Exception $e) {
             throw new InvalidParamException("'$value' is not a valid date time value: " . $e->getMessage()
                 . "\n" . print_r(DateTime::getLastErrors(), true), $e->getCode(), $e);
@@ -826,8 +827,10 @@ class Formatter extends Component
             if ($interval->s == 0) {
                 return Yii::t('yii', 'just now', [], $this->locale);
             }
+
             return Yii::t('yii', 'in {delta, plural, =1{a second} other{# seconds}}', ['delta' => $interval->s], $this->locale);
-        } else {
+        }
+
         if ($interval->y >= 1) {
             return Yii::t('yii', '{delta, plural, =1{a year} other{# years}} ago', ['delta' => $interval->y], $this->locale);
         }
@@ -846,9 +849,9 @@ class Formatter extends Component
         if ($interval->s == 0) {
             return Yii::t('yii', 'just now', [], $this->locale);
         }
+
         return Yii::t('yii', '{delta, plural, =1{a second} other{# seconds}} ago', ['delta' => $interval->s], $this->locale);
     }
-    }
 
     /**
      * Represents the value as duration in human readable format.
@@ -941,10 +944,11 @@ class Formatter extends Component
             if (($result = $f->format($value, NumberFormatter::TYPE_INT64)) === false) {
                 throw new InvalidParamException('Formatting integer value failed: ' . $f->getErrorCode() . ' ' . $f->getErrorMessage());
             }
+
             return $result;
-        } else {
-            return number_format((int) $value, 0, $this->decimalSeparator, $this->thousandSeparator);
         }
+
+        return number_format((int) $value, 0, $this->decimalSeparator, $this->thousandSeparator);
     }
 
     /**
@@ -980,14 +984,16 @@ class Formatter extends Component
             if (($result = $f->format($value)) === false) {
                 throw new InvalidParamException('Formatting decimal value failed: ' . $f->getErrorCode() . ' ' . $f->getErrorMessage());
             }
+
             return $result;
-        } else {
+        }
+
         if ($decimals === null) {
             $decimals = 2;
         }
+
         return number_format($value, $decimals, $this->decimalSeparator, $this->thousandSeparator);
     }
-    }
 
 
     /**
@@ -1019,14 +1025,15 @@ class Formatter extends Component
                 throw new InvalidParamException('Formatting percent value failed: ' . $f->getErrorCode() . ' ' . $f->getErrorMessage());
             }
             return $result;
-        } else {
+        }
+
         if ($decimals === null) {
             $decimals = 0;
         }
+
         $value *= 100;
         return number_format($value, $decimals, $this->decimalSeparator, $this->thousandSeparator) . '%';
     }
-    }
 
     /**
      * Formats the value as a scientific number.
@@ -1056,14 +1063,15 @@ class Formatter extends Component
             if (($result = $f->format($value)) === false) {
                 throw new InvalidParamException('Formatting scientific number value failed: ' . $f->getErrorCode() . ' ' . $f->getErrorMessage());
             }
+
             return $result;
-        } else {
+        }
+
         if ($decimals !== null) {
             return sprintf("%.{$decimals}E", $value);
-            } else {
-                return sprintf('%.E', $value);
-            }
         }
+
+        return sprintf('%.E', $value);
     }
 
     /**
@@ -1104,17 +1112,19 @@ class Formatter extends Component
             if ($result === false) {
                 throw new InvalidParamException('Formatting currency value failed: ' . $formatter->getErrorCode() . ' ' . $formatter->getErrorMessage());
             }
+
             return $result;
-        } else {
+        }
+
         if ($currency === null) {
             if ($this->currencyCode === null) {
                 throw new InvalidConfigException('The default currency code for the formatter is not defined and the php intl extension is not installed which could take the default currency from the locale.');
             }
             $currency = $this->currencyCode;
         }
+
         return $currency . ' ' . $this->asDecimal($value, 2, $options, $textOptions);
     }
-    }
 
     /**
      * Formats the value as a number spellout.
@@ -1137,10 +1147,11 @@ class Formatter extends Component
             if (($result = $f->format($value)) === false) {
                 throw new InvalidParamException('Formatting number as spellout failed: ' . $f->getErrorCode() . ' ' . $f->getErrorMessage());
             }
+
             return $result;
-        } else {
-            throw new InvalidConfigException('Format as Spellout is only supported when PHP intl extension is installed.');
         }
+
+        throw new InvalidConfigException('Format as Spellout is only supported when PHP intl extension is installed.');
     }
 
     /**
@@ -1164,10 +1175,11 @@ class Formatter extends Component
             if (($result = $f->format($value)) === false) {
                 throw new InvalidParamException('Formatting number as ordinal failed: ' . $f->getErrorCode() . ' ' . $f->getErrorMessage());
             }
+
             return $result;
-        } else {
-            throw new InvalidConfigException('Format as Ordinal is only supported when PHP intl extension is installed.');
         }
+
+        throw new InvalidConfigException('Format as Ordinal is only supported when PHP intl extension is installed.');
     }
 
     /**

framework/i18n/GettextMessageSource.php

@@ -162,8 +162,8 @@ class GettextMessageSource extends MessageSource
             }
 
             return $messages;
-        } else {
-            return null;
         }
+
+        return null;
     }
 }

framework/i18n/GettextMoFile.php

@@ -207,9 +207,9 @@ class GettextMoFile extends GettextFile
     {
         if ($byteCount > 0) {
             return fread($fileHandle, $byteCount);
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**

framework/i18n/I18N.php

@@ -89,9 +89,9 @@ class I18N extends Component
         $translation = $messageSource->translate($category, $message, $language);
         if ($translation === false) {
             return $this->format($message, $params, $messageSource->sourceLanguage);
-        } else {
-            return $this->format($translation, $params, $language);
         }
+
+        return $this->format($translation, $params, $language);
     }
 
     /**
@@ -117,9 +117,9 @@ class I18N extends Component
                 Yii::warning("Formatting message for language '$language' failed with error: $errorMessage. The message being formatted was: $message.", __METHOD__);
 
                 return $message;
-            } else {
-                return $result;
             }
+
+            return $result;
         }
 
         $p = [];
@@ -172,29 +172,29 @@ class I18N extends Component
             $source = $this->translations[$category];
             if ($source instanceof MessageSource) {
                 return $source;
-            } else {
+            }
+
             return $this->translations[$category] = Yii::createObject($source);
         }
-        } else {
         // try wildcard matching
         foreach ($this->translations as $pattern => $source) {
             if (strpos($pattern, '*') > 0 && strpos($category, rtrim($pattern, '*')) === 0) {
                 if ($source instanceof MessageSource) {
                     return $source;
-                    } else {
-                        return $this->translations[$category] = $this->translations[$pattern] = Yii::createObject($source);
                 }
+
+                return $this->translations[$category] = $this->translations[$pattern] = Yii::createObject($source);
             }
         }
+
         // match '*' in the last
         if (isset($this->translations['*'])) {
             $source = $this->translations['*'];
             if ($source instanceof MessageSource) {
                 return $source;
-                } else {
-                    return $this->translations[$category] = $this->translations['*'] = Yii::createObject($source);
-                }
             }
+
+            return $this->translations[$category] = $this->translations['*'] = Yii::createObject($source);
         }
 
         throw new InvalidConfigException("Unable to locate message source for category '$category'.");

framework/i18n/MessageFormatter.php

@@ -126,9 +126,9 @@ class MessageFormatter extends Component
             $this->_errorCode = $formatter->getErrorCode();
             $this->_errorMessage = $formatter->getErrorMessage();
             return false;
-        } else {
-            return $result;
         }
+
+        return $result;
     }
 
     /**
@@ -187,7 +187,8 @@ class MessageFormatter extends Component
             $this->_errorMessage = $formatter->getErrorMessage();
 
             return false;
-        } else {
+        }
+
         $values = [];
         foreach ($result as $key => $value) {
             $values[$map[$key]] = $value;
@@ -195,7 +196,6 @@ class MessageFormatter extends Component
 
         return $values;
     }
-    }
 
     /**
      * Replace named placeholders with numeric placeholders and quote unused.

framework/i18n/MessageSource.php

@@ -85,9 +85,9 @@ class MessageSource extends Component
     {
         if ($this->forceTranslation || $language !== $this->sourceLanguage) {
             return $this->translateMessage($category, $message, $language);
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**

framework/i18n/PhpMessageSource.php

@@ -159,8 +159,8 @@ class PhpMessageSource extends MessageSource
             }
 
             return $messages;
-        } else {
-            return null;
         }
+
+        return null;
     }
 }

framework/mail/BaseMailer.php

@@ -301,9 +301,9 @@ abstract class BaseMailer extends Component implements MailerInterface, ViewCont
         $output = $this->getView()->render($view, $params, $this);
         if ($layout !== false) {
             return $this->getView()->render($layout, ['content' => $output, 'message' => $this->_message], $this);
-        } else {
-            return $output;
         }
+
+        return $output;
     }
 
     /**

framework/mutex/FileMutex.php

@@ -117,14 +117,14 @@ class FileMutex extends Mutex
     {
         if (!isset($this->_files[$name]) || !flock($this->_files[$name], LOCK_UN)) {
             return false;
-        } else {
+        }
+
         fclose($this->_files[$name]);
         unlink($this->getLockFilePath($name));
         unset($this->_files[$name]);
 
         return true;
     }
-    }
 
     /**
      * Generate path for lock file.

framework/mutex/Mutex.php

@@ -72,9 +72,9 @@ abstract class Mutex extends Component
             $this->_locks[] = $name;
 
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -91,9 +91,9 @@ abstract class Mutex extends Component
             }
 
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**

framework/rbac/BaseManager.php

@@ -128,9 +128,9 @@ abstract class BaseManager extends Component implements ManagerInterface
             return $this->addItem($object);
         } elseif ($object instanceof Rule) {
             return $this->addRule($object);
-        } else {
-            throw new InvalidParamException('Adding unsupported object type.');
         }
+
+        throw new InvalidParamException('Adding unsupported object type.');
     }
 
     /**
@@ -142,9 +142,9 @@ abstract class BaseManager extends Component implements ManagerInterface
             return $this->removeItem($object);
         } elseif ($object instanceof Rule) {
             return $this->removeRule($object);
-        } else {
-            throw new InvalidParamException('Removing unsupported object type.');
         }
+
+        throw new InvalidParamException('Removing unsupported object type.');
     }
 
     /**
@@ -161,9 +161,9 @@ abstract class BaseManager extends Component implements ManagerInterface
             return $this->updateItem($name, $object);
         } elseif ($object instanceof Rule) {
             return $this->updateRule($name, $object);
-        } else {
-            throw new InvalidParamException('Updating unsupported object type.');
         }
+
+        throw new InvalidParamException('Updating unsupported object type.');
     }
 
     /**
@@ -235,9 +235,9 @@ abstract class BaseManager extends Component implements ManagerInterface
         $rule = $this->getRule($item->ruleName);
         if ($rule instanceof Rule) {
             return $rule->execute($user, $item, $params);
-        } else {
-            throw new InvalidConfigException("Rule not found: {$item->ruleName}");
         }
+
+        throw new InvalidConfigException("Rule not found: {$item->ruleName}");
     }
 
     /**

framework/rbac/DbManager.php

@@ -129,9 +129,9 @@ class DbManager extends BaseManager
         $this->loadFromCache();
         if ($this->items !== null) {
             return $this->checkAccessFromCache($userId, $permissionName, $params, $assignments);
-        } else {
-            return $this->checkAccessRecursive($userId, $permissionName, $params, $assignments);
         }
+
+        return $this->checkAccessRecursive($userId, $permissionName, $params, $assignments);
     }
 
     /**

framework/rbac/PhpManager.php

@@ -226,9 +226,9 @@ class PhpManager extends BaseManager
             unset($this->children[$parent->name][$child->name]);
             $this->saveItems();
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -240,9 +240,9 @@ class PhpManager extends BaseManager
             unset($this->children[$parent->name]);
             $this->saveItems();
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -262,16 +262,17 @@ class PhpManager extends BaseManager
             throw new InvalidParamException("Unknown role '{$role->name}'.");
         } elseif (isset($this->assignments[$userId][$role->name])) {
             throw new InvalidParamException("Authorization item '{$role->name}' has already been assigned to user '$userId'.");
-        } else {
+        }
+
         $this->assignments[$userId][$role->name] = new Assignment([
             'userId' => $userId,
             'roleName' => $role->name,
             'createdAt' => time(),
         ]);
         $this->saveAssignments();
+
         return $this->assignments[$userId][$role->name];
     }
-    }
 
     /**
      * @inheritdoc
@@ -282,9 +283,9 @@ class PhpManager extends BaseManager
             unset($this->assignments[$userId][$role->name]);
             $this->saveAssignments();
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -298,9 +299,9 @@ class PhpManager extends BaseManager
             }
             $this->saveAssignments();
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -345,9 +346,9 @@ class PhpManager extends BaseManager
             $this->saveItems();
             $this->saveAssignments();
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -630,9 +631,9 @@ class PhpManager extends BaseManager
             }
             $this->saveRules();
             return true;
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -653,7 +654,8 @@ class PhpManager extends BaseManager
         if ($name !== $item->name) {
             if (isset($this->items[$item->name])) {
                 throw new InvalidParamException("Unable to change the item name. The name '{$item->name}' is already used by another item.");
-            } else {
+            }
+
             // Remove old item in case of renaming
             unset($this->items[$name]);
 
@@ -676,7 +678,6 @@ class PhpManager extends BaseManager
             }
             $this->saveAssignments();
         }
-        }
 
         $this->items[$item->name] = $item;
 
@@ -779,9 +780,9 @@ class PhpManager extends BaseManager
     {
         if (is_file($file)) {
             return require($file);
-        } else {
-            return [];
         }
+
+        return [];
     }
 
     /**

framework/rest/Action.php

@@ -99,8 +99,8 @@ class Action extends \yii\base\Action
 
         if (isset($model)) {
             return $model;
-        } else {
-            throw new NotFoundHttpException("Object not found: $id");
         }
+
+        throw new NotFoundHttpException("Object not found: $id");
     }
 }

framework/rest/Serializer.php

@@ -150,9 +150,9 @@ class Serializer extends Component
             return $this->serializeModel($data);
         } elseif ($data instanceof DataProviderInterface) {
             return $this->serializeDataProvider($data);
-        } else {
-            return $data;
         }
+
+        return $data;
     }
 
     /**
@@ -195,16 +195,16 @@ class Serializer extends Component
             return null;
         } elseif ($this->collectionEnvelope === null) {
             return $models;
-        } else {
+        }
+
         $result = [
             $this->collectionEnvelope => $models,
         ];
         if ($pagination !== false) {
             return array_merge($result, $this->serializePagination($pagination));
-            } else {
-                return $result;
-            }
         }
+
+        return $result;
     }
 
     /**
@@ -254,11 +254,11 @@ class Serializer extends Component
     {
         if ($this->request->getIsHead()) {
             return null;
-        } else {
+        }
+
         list($fields, $expand) = $this->getRequestedFields();
         return $model->toArray($fields, $expand);
     }
-    }
 
     /**
      * Serializes the validation errors in a model.

framework/test/ActiveFixture.php

@@ -99,9 +99,9 @@ class ActiveFixture extends BaseActiveFixture
             $dataFile = dirname($class->getFileName()) . '/data/' . $this->getTableSchema()->fullName . '.php';
 
             return is_file($dataFile) ? require($dataFile) : [];
-        } else {
-            return parent::getData();
         }
+
+        return parent::getData();
     }
 
     /**

framework/test/ArrayFixture.php

@@ -62,9 +62,9 @@ class ArrayFixture extends Fixture implements \IteratorAggregate, \ArrayAccess,
         $dataFile = Yii::getAlias($this->dataFile);
         if (is_file($dataFile)) {
             return require($dataFile);
-        } else {
-            throw new InvalidConfigException("Fixture data file does not exist: {$this->dataFile}");
         }
+
+        throw new InvalidConfigException("Fixture data file does not exist: {$this->dataFile}");
     }
 
     /**

framework/test/BaseActiveFixture.php

@@ -101,9 +101,9 @@ abstract class BaseActiveFixture extends DbFixture implements \IteratorAggregate
         $dataFile = Yii::getAlias($this->dataFile);
         if (is_file($dataFile)) {
             return require($dataFile);
-        } else {
-            throw new InvalidConfigException("Fixture data file does not exist: {$this->dataFile}");
         }
+
+        throw new InvalidConfigException("Fixture data file does not exist: {$this->dataFile}");
     }
 
     /**

framework/validators/CompareValidator.php

@@ -176,9 +176,9 @@ class CompareValidator extends Validator
                 'compareValue' => $this->compareValue,
                 'compareValueOrAttribute' => $this->compareValue,
             ]];
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**

framework/validators/DateValidator.php

@@ -312,9 +312,9 @@ class DateValidator extends Validator
             return [$this->tooSmall, ['min' => $this->minString]];
         } elseif ($this->max !== null && $timestamp > $this->max) {
             return [$this->tooBig, ['max' => $this->maxString]];
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**
@@ -346,11 +346,12 @@ class DateValidator extends Validator
         } else {
             if (extension_loaded('intl')) {
                 return $this->parseDateValueIntl($value, $format);
-            } else {
+            }
+
             // fallback to PHP if intl is not installed
             $format = FormatConverter::convertDateIcuToPhp($format, 'date');
         }
-        }
+
         return $this->parseDateValuePHP($value, $format);
     }
 

framework/validators/EachValidator.php

@@ -116,9 +116,9 @@ class EachValidator extends Validator
                 $model = new Model(); // mock up context model
             }
             return Validator::createValidator($rule[0], $model, $this->attributes, array_slice($rule, 1));
-        } else {
-            throw new InvalidConfigException('Invalid validation rule: a rule must be an array specifying validator type.');
         }
+
+        throw new InvalidConfigException('Invalid validation rule: a rule must be an array specifying validator type.');
     }
 
     /**
@@ -184,9 +184,9 @@ class EachValidator extends Validator
                 if ($this->allowMessageFromRule) {
                     $result[1]['value'] = $v;
                     return $result;
-                } else {
-                    return [$this->message, ['value' => $v]];
                 }
+
+                return [$this->message, ['value' => $v]];
             }
         }
 

framework/validators/ExistValidator.php

@@ -183,9 +183,9 @@ class ExistValidator extends Validator
                 return [$this->message, []];
             }
             return $query->count("DISTINCT [[$this->targetAttribute]]") == count($value) ? null : [$this->message, []];
-        } else {
-            return $query->exists() ? null : [$this->message, []];
         }
+
+        return $query->exists() ? null : [$this->message, []];
     }
 
     /**

framework/validators/InlineValidator.php

@@ -84,8 +84,8 @@ class InlineValidator extends Validator
             }
 
             return call_user_func($method, $attribute, $this->params, $this);
-        } else {
-            return null;
         }
+
+        return null;
     }
 }

framework/validators/IpValidator.php

@@ -297,9 +297,9 @@ class IpValidator extends Validator
         if (is_array($result)) {
             $result[1] = array_merge(['ip' => is_array($value) ? 'array()' : $value], $result[1]);
             return $result;
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**
@@ -564,7 +564,8 @@ class IpValidator extends Validator
     {
         if ($this->getIpVersion($ip) === 4) {
             return str_pad(base_convert(ip2long($ip), 10, 2), static::IPV4_ADDRESS_LENGTH, '0', STR_PAD_LEFT);
-        } else {
+        }
+
         $unpack = unpack('A16', inet_pton($ip));
         $binStr = array_shift($unpack);
         $bytes = static::IPV6_ADDRESS_LENGTH / 8; // 128 bit / 8 = 16 bytes
@@ -572,9 +573,9 @@ class IpValidator extends Validator
         while ($bytes-- > 0) {
             $result = sprintf('%08b', isset($binStr[$bytes]) ? ord($binStr[$bytes]) : '0') . $result;
         }
+
         return $result;
     }
-    }
 
     /**
      * @inheritdoc

framework/validators/NumberValidator.php

@@ -113,9 +113,9 @@ class NumberValidator extends Validator
             return [$this->tooSmall, ['min' => $this->min]];
         } elseif ($this->max !== null && $value > $this->max) {
             return [$this->tooBig, ['max' => $this->max]];
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**

framework/validators/RequiredValidator.php

@@ -76,12 +76,12 @@ class RequiredValidator extends Validator
         }
         if ($this->requiredValue === null) {
             return [$this->message, []];
-        } else {
+        }
+
         return [$this->message, [
             'requiredValue' => $this->requiredValue,
         ]];
     }
-    }
 
     /**
      * @inheritdoc

framework/validators/Validator.php

@@ -428,9 +428,9 @@ class Validator extends Component
     {
         if ($this->isEmpty !== null) {
             return call_user_func($this->isEmpty, $value);
-        } else {
-            return $value === null || $value === [] || $value === '';
         }
+
+        return $value === null || $value === [] || $value === '';
     }
 
     /**

framework/web/Application.php

@@ -102,14 +102,14 @@ class Application extends \yii\base\Application
             $result = $this->runAction($route, $params);
             if ($result instanceof Response) {
                 return $result;
-            } else {
+            }
+
             $response = $this->getResponse();
             if ($result !== null) {
                 $response->data = $result;
             }
 
             return $response;
-            }
         } catch (InvalidRouteException $e) {
             throw new NotFoundHttpException(Yii::t('yii', 'Page not found.'), $e->getCode(), $e);
         }
@@ -125,13 +125,13 @@ class Application extends \yii\base\Application
         if ($this->_homeUrl === null) {
             if ($this->getUrlManager()->showScriptName) {
                 return $this->getRequest()->getScriptUrl();
-            } else {
+            }
+
             return $this->getRequest()->getBaseUrl() . '/';
         }
-        } else {
+
         return $this->_homeUrl;
     }
-    }
 
     /**
      * @param string $value the homepage URL

framework/web/AssetManager.php

@@ -213,9 +213,9 @@ class AssetManager extends Component
             throw new InvalidConfigException("The directory does not exist: {$this->basePath}");
         } elseif (!is_writable($this->basePath)) {
             throw new InvalidConfigException("The directory is not writable by the Web process: {$this->basePath}");
-        } else {
-            $this->basePath = realpath($this->basePath);
         }
+
+        $this->basePath = realpath($this->basePath);
         $this->baseUrl = rtrim(Yii::getAlias($this->baseUrl), '/');
     }
 
@@ -243,9 +243,9 @@ class AssetManager extends Component
             return $this->bundles[$name] = $this->loadBundle($name, $this->bundles[$name], $publish);
         } elseif ($this->bundles[$name] === false) {
             return $this->loadDummyBundle($name);
-        } else {
-            throw new InvalidConfigException("Invalid asset bundle configuration: $name");
         }
+
+        throw new InvalidConfigException("Invalid asset bundle configuration: $name");
     }
 
     /**
@@ -319,9 +319,9 @@ class AssetManager extends Component
 
         if ($this->appendTimestamp && ($timestamp = @filemtime("$basePath/$asset")) > 0) {
             return "$baseUrl/$asset?v=$timestamp";
-        } else {
-            return "$baseUrl/$asset";
         }
+
+        return "$baseUrl/$asset";
     }
 
     /**
@@ -334,9 +334,9 @@ class AssetManager extends Component
     {
         if (($actualAsset = $this->resolveAsset($bundle, $asset)) !== false) {
             return Url::isRelative($actualAsset) ? $this->basePath . '/' . $actualAsset : false;
-        } else {
-            return Url::isRelative($asset) ? $bundle->basePath . '/' . $asset : false;
         }
+
+        return Url::isRelative($asset) ? $bundle->basePath . '/' . $asset : false;
     }
 
     /**
@@ -456,9 +456,9 @@ class AssetManager extends Component
 
         if (is_file($src)) {
             return $this->_published[$path] = $this->publishFile($src);
-        } else {
-            return $this->_published[$path] = $this->publishDirectory($src, $options);
         }
+
+        return $this->_published[$path] = $this->publishDirectory($src, $options);
     }
 
     /**
@@ -564,9 +564,9 @@ class AssetManager extends Component
         }
         if (is_string($path) && ($path = realpath($path)) !== false) {
             return $this->basePath . DIRECTORY_SEPARATOR . $this->hash($path) . (is_file($path) ? DIRECTORY_SEPARATOR . basename($path) : '');
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -585,9 +585,9 @@ class AssetManager extends Component
         }
         if (is_string($path) && ($path = realpath($path)) !== false) {
             return $this->baseUrl . '/' . $this->hash($path) . (is_file($path) ? '/' . basename($path) : '');
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**

framework/web/ErrorHandler.php

@@ -250,9 +250,9 @@ class ErrorHandler extends \yii\base\ErrorHandler
             require(Yii::getAlias($_file_));
 
             return ob_get_clean();
-        } else {
-            return Yii::$app->getView()->renderFile($_file_, $_params_, $this);
         }
+
+        return Yii::$app->getView()->renderFile($_file_, $_params_, $this);
     }
 
     /**
@@ -265,9 +265,9 @@ class ErrorHandler extends \yii\base\ErrorHandler
     {
         if (($previous = $exception->getPrevious()) !== null) {
             return $this->renderFile($this->previousExceptionView, ['exception' => $previous]);
-        } else {
-            return '';
         }
+
+        return '';
     }
 
     /**

framework/web/GroupUrlRule.php

@@ -116,9 +116,9 @@ class GroupUrlRule extends CompositeUrlRule
         $pathInfo = $request->getPathInfo();
         if ($this->prefix === '' || strpos($pathInfo . '/', $this->prefix . '/') === 0) {
             return parent::parseRequest($manager, $request);
-        } else {
-            return false;
         }
+
+        return false;
     }
 
     /**
@@ -128,9 +128,9 @@ class GroupUrlRule extends CompositeUrlRule
     {
         if ($this->routePrefix === '' || strpos($route, $this->routePrefix . '/') === 0) {
             return parent::createUrl($manager, $route, $params);
-        } else {
+        }
+
         $this->createStatus = UrlRule::CREATE_STATUS_ROUTE_MISMATCH;
         return false;
     }
 }
-}

framework/web/HeaderCollection.php

@@ -74,9 +74,9 @@ class HeaderCollection extends Object implements \IteratorAggregate, \ArrayAcces
         $name = strtolower($name);
         if (isset($this->_headers[$name])) {
             return $first ? reset($this->_headers[$name]) : $this->_headers[$name];
-        } else {
-            return $default;
         }
+
+        return $default;
     }
 
     /**
@@ -151,9 +151,9 @@ class HeaderCollection extends Object implements \IteratorAggregate, \ArrayAcces
             $value = $this->_headers[$name];
             unset($this->_headers[$name]);
             return $value;
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**

framework/web/HttpException.php

@@ -55,8 +55,8 @@ class HttpException extends UserException
     {
         if (isset(Response::$httpStatuses[$this->statusCode])) {
             return Response::$httpStatuses[$this->statusCode];
-        } else {
-            return 'Error';
         }
+
+        return 'Error';
     }
 }

framework/web/MultiFieldSession.php

@@ -134,8 +134,8 @@ abstract class MultiFieldSession extends Session
                 return session_encode();
             }
             return $fields['data'];
-        } else {
-            return isset($fields['data']) ? $fields['data'] : '';
         }
+
+        return isset($fields['data']) ? $fields['data'] : '';
     }
 }

framework/web/Response.php

@@ -647,9 +647,9 @@ class Response extends \yii\base\Response
         }
         if ($start < 0 || $start > $end) {
             return false;
-        } else {
-            return [$start, $end];
         }
+
+        return [$start, $end];
     }
 
     /**

framework/web/Session.php

@@ -395,9 +395,9 @@ class Session extends Component implements \IteratorAggregate, \ArrayAccess, \Co
             return false;
         } elseif (ini_get('session.use_only_cookies') === '1') {
             return true;
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**
@@ -622,9 +622,9 @@ class Session extends Component implements \IteratorAggregate, \ArrayAccess, \Co
             unset($_SESSION[$key]);
 
             return $value;
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**
@@ -697,9 +697,9 @@ class Session extends Component implements \IteratorAggregate, \ArrayAccess, \Co
             }
 
             return $value;
-        } else {
-            return $defaultValue;
         }
+
+        return $defaultValue;
     }
 
     /**

framework/web/UrlManager.php

@@ -308,10 +308,11 @@ class UrlManager extends Component
             if ($normalized) {
                 // pathInfo was changed by normalizer - we need also normalize route
                 return $this->normalizer->normalizeRoute([$pathInfo, []]);
-            } else {
+            }
+
             return [$pathInfo, []];
         }
-        } else {
+
         Yii::trace('Pretty URL not enabled. Using default URL parsing logic.', __METHOD__);
         $route = $request->getQueryParam($this->routeParam, '');
         if (is_array($route)) {
@@ -320,7 +321,6 @@ class UrlManager extends Component
 
         return [(string) $route, []];
     }
-    }
 
     /**
      * Creates a URL using the given route and query parameters.
@@ -393,20 +393,20 @@ class UrlManager extends Component
                 if (strpos($url, '://') !== false) {
                     if ($baseUrl !== '' && ($pos = strpos($url, '/', 8)) !== false) {
                         return substr($url, 0, $pos) . $baseUrl . substr($url, $pos) . $anchor;
-                    } else {
-                        return $url . $baseUrl . $anchor;
                     }
+
+                    return $url . $baseUrl . $anchor;
                 } elseif (strpos($url, '//') === 0) {
                     if ($baseUrl !== '' && ($pos = strpos($url, '/', 2)) !== false) {
                         return substr($url, 0, $pos) . $baseUrl . substr($url, $pos) . $anchor;
-                    } else {
+                    }
+
                     return $url . $baseUrl . $anchor;
                 }
-                } else {
+
                 $url = ltrim($url, '/');
                 return "$baseUrl/{$url}{$anchor}";
             }
-            }
 
             if ($this->suffix !== null) {
                 $route .= $this->suffix;
@@ -417,7 +417,8 @@ class UrlManager extends Component
 
             $route = ltrim($route, '/');
             return "$baseUrl/{$route}{$anchor}";
-        } else {
+        }
+
         $url = "$baseUrl?{$this->routeParam}=" . urlencode($route);
         if (!empty($params) && ($query = http_build_query($params)) !== '') {
             $url .= '&' . $query;
@@ -425,7 +426,6 @@ class UrlManager extends Component
 
         return $url . $anchor;
     }
-    }
 
     /**
      * Returns the value indicating whether result of [[createUrl()]] of rule should be cached in internal cache.

framework/web/UrlRule.php

@@ -353,9 +353,9 @@ class UrlRule extends Object implements UrlRuleInterface
     {
         if ($this->normalizer === null) {
             return $manager->normalizer;
-        } else {
-            return $this->normalizer;
         }
+
+        return $this->normalizer;
     }
 
     /**
@@ -439,9 +439,9 @@ class UrlRule extends Object implements UrlRuleInterface
         if ($normalized) {
             // pathInfo was changed by normalizer - we need also normalize route
             return $this->getNormalizer($manager)->normalizeRoute([$route, $params]);
-        } else {
-            return [$route, $params];
         }
+
+        return [$route, $params];
     }
 
     /**

framework/web/User.php

@@ -271,9 +271,9 @@ class User extends Component
         $identity = $class::findIdentityByAccessToken($token, $type);
         if ($identity && $this->login($identity)) {
             return $identity;
-        } else {
-            return null;
         }
+
+        return null;
     }
 
     /**
@@ -363,9 +363,9 @@ class User extends Component
         if (is_array($url)) {
             if (isset($url[0])) {
                 return Yii::$app->getUrlManager()->createUrl($url);
-            } else {
-                $url = null;
             }
+
+            $url = null;
         }
 
         return $url === null ? Yii::$app->getHomeUrl() : $url;

framework/web/ViewAction.php

@@ -87,12 +87,12 @@ class ViewAction extends Action
 
             if (YII_DEBUG) {
                 throw new NotFoundHttpException($e->getMessage());
-            } else {
+            }
+
             throw new NotFoundHttpException(
                 Yii::t('yii', 'The requested view "{name}" was not found.', ['name' => $viewName])
             );
         }
-        }
 
         return $output;
     }
@@ -121,9 +121,9 @@ class ViewAction extends Action
         if (!is_string($viewName) || !preg_match('~^\w(?:(?!\/\.{0,2}\/)[\w\/\-\.])*$~', $viewName)) {
             if (YII_DEBUG) {
                 throw new NotFoundHttpException("The requested view \"$viewName\" must start with a word character, must not contain /../ or /./, can contain only word characters, forward slashes, dots and dashes.");
-            } else {
-                throw new NotFoundHttpException(Yii::t('yii', 'The requested view "{name}" was not found.', ['name' => $viewName]));
             }
+
+            throw new NotFoundHttpException(Yii::t('yii', 'The requested view "{name}" was not found.', ['name' => $viewName]));
         }
 
         return empty($this->viewPrefix) ? $viewName : $this->viewPrefix . '/' . $viewName;

framework/widgets/ActiveForm.php

@@ -342,9 +342,9 @@ class ActiveForm extends Widget
         $field = array_pop($this->_fields);
         if ($field instanceof ActiveField) {
             return $field->end();
-        } else {
-            throw new InvalidCallException('Mismatching endField() call.');
         }
+
+        throw new InvalidCallException('Mismatching endField() call.');
     }
 
     /**

framework/widgets/DetailView.php

@@ -179,9 +179,9 @@ class DetailView extends Widget
                 '{captionOptions}' => $captionOptions,
                 '{contentOptions}' => $contentOptions,
             ]);
-        } else {
-            return call_user_func($this->template, $attribute, $index, $this);
         }
+
+        return call_user_func($this->template, $attribute, $index, $this);
     }
 
     /**

framework/widgets/Menu.php

@@ -238,14 +238,14 @@ class Menu extends Widget
                 '{url}' => Html::encode(Url::to($item['url'])),
                 '{label}' => $item['label'],
             ]);
-        } else {
+        }
+
         $template = ArrayHelper::getValue($item, 'template', $this->labelTemplate);
 
         return strtr($template, [
             '{label}' => $item['label'],
         ]);
     }
-    }
 
     /**
      * Normalizes the [[items]] property to remove invisible items and activate certain items.