Fixes #10488: Fixed incorrect behavior of `yii\validation\NumberValidator` when used with locales where decimal separator is comma

framework/CHANGELOG.md

@@ -8,6 +8,7 @@ Yii Framework 2 Change Log
 - Bug #9305: Fixed MSSQL `Schema::TYPE_TIMESTAMP` to be 'datetime' instead of 'timestamp', which is just an incremental number (nkovacs)
 - Bug #9616: Fixed mysql\Schema::loadColumnSchema to set enumValues attribute correctly if enum definition contains commas (fphammerle)
 - Bug #9796: Initialization of not existing `yii\grid\ActionColumn` default buttons (arogachev)
+- Bug #10488: Fixed incorrect behavior of `yii\validation\NumberValidator` when used with locales where decimal separator is comma (quantum13, samdark)
 - Bug #12681: Changed `data` column type from `text` to `blob` to handle null-byte (`\0`) in serialized RBAC rule properly (silverfire)
 - Bug #12714: Fixed `yii\validation\EmailValidator` to prevent false-positives checks when property `checkDns` is set to `true` (silverfire)
 - Bug #12791: Fixed `yii\behaviors\AttributeTypecastBehavior` unable to automatically detect `attributeTypes`, triggering PHP Fatal Error (klimov-paul)

framework/validators/NumberValidator.php

@@ -120,17 +120,21 @@ class NumberValidator extends Validator
     /**
      * Returns string represenation of number value with replaced commas to dots, if decimal point
      * of current locale is comma
-     * @param $value
+     * @param int|float|string $value
      * @return string
      */
     private function getStringValue($value)
     {
+        $value = (string)$value;
+
         $localeInfo = localeconv();
-        if (isset($localeInfo['decimal_point']) && $localeInfo['decimal_point'] ==',') {
-            return str_replace(',', '.', "$value");
-        } else {
-            return "$value";
+        $decimalPointSeparator = isset($localeInfo['decimal_point']) ? $localeInfo['decimal_point'] : null;
+
+        if ($decimalPointSeparator !== null && $decimalPointSeparator !== '.') {
+            $value = str_replace($decimalPointSeparator, '.', $value);
         }
+
+        return $value;
     }
 
     /**

tests/framework/validators/NumberValidatorTest.php

@@ -39,9 +39,9 @@ class NumberValidatorTest extends TestCase
         $this->assertTrue($val->validate(25.45));
 
         $oldLocale = setlocale(LC_ALL, "0");
-        setlocale(LC_ALL, "en_US.UTF-8");
+        setlocale(LC_ALL, 'en_US.UTF-8', 'English_United States.1252');
         $this->assertFalse($val->validate('25,45'));
-        setlocale(LC_ALL, "en_DK.UTF-8"); //decimal point is comma
+        setlocale(LC_ALL, 'da_DK.UTF-8', 'Danish_Denmark.1252'); //decimal point is comma
         $this->assertTrue($val->validate('25,45'));
         setlocale(LC_ALL, $oldLocale);
 
@@ -83,10 +83,10 @@ class NumberValidatorTest extends TestCase
 
         $oldLocale = setlocale(LC_ALL, "0");
 
-        setlocale(LC_ALL, "en_US.UTF-8");
+        setlocale(LC_ALL, 'en_US.UTF-8', 'English_United States.1252');
         $this->assertTrue($val->validate(.5));
 
-        setlocale(LC_ALL, "en_DK.UTF-8"); //decimal point is comma
+        setlocale(LC_ALL, 'da_DK.UTF-8', 'Danish_Denmark.1252'); //decimal point is comma
         $this->assertTrue($val->validate(.5));
 
         setlocale(LC_ALL, $oldLocale);
@@ -189,11 +189,11 @@ class NumberValidatorTest extends TestCase
 
         $oldLocale = setlocale(LC_ALL, "0");
 
-        setlocale(LC_ALL, "en_US.UTF-8");
+        setlocale(LC_ALL, 'en_US.UTF-8', 'English_United States.1252');
         $val->validateAttribute($model, 'attr_number');
         $this->assertFalse($model->hasErrors('attr_number'));
 
-        setlocale(LC_ALL, "en_DK.UTF-8"); //decimal point is comma
+        setlocale(LC_ALL, 'da_DK.UTF-8', 'Danish_Denmark.1252'); //decimal point is comma
         $val->validateAttribute($model, 'attr_number');
         $this->assertFalse($model->hasErrors('attr_number'));