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68 lines
2.4 KiB
68 lines
2.4 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\helpers\base; |
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/** |
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* StringHelper |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @author Alex Makarov <sam@rmcreative.ru> |
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* @since 2.0 |
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*/ |
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class StringHelper |
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{ |
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/** |
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* Returns the number of bytes in the given string. |
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* This method ensures the string is treated as a byte array. |
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* It will use `mb_strlen()` if it is available. |
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* @param string $string the string being measured for length |
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* @return integer the number of bytes in the given string. |
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*/ |
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public static function strlen($string) |
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{ |
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return function_exists('mb_strlen') ? mb_strlen($string, '8bit') : strlen($string); |
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} |
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/** |
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* Returns the portion of string specified by the start and length parameters. |
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* This method ensures the string is treated as a byte array. |
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* It will use `mb_substr()` if it is available. |
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* @param string $string the input string. Must be one character or longer. |
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* @param integer $start the starting position |
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* @param integer $length the desired portion length |
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* @return string the extracted part of string, or FALSE on failure or an empty string. |
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* @see http://www.php.net/manual/en/function.substr.php |
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*/ |
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public static function substr($string, $start, $length) |
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{ |
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return function_exists('mb_substr') ? mb_substr($string, $start, $length, '8bit') : substr($string, $start, $length); |
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} |
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/** |
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* Returns the trailing name component of a path. |
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* This method does the same as the php function basename() except that it will |
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* always use \ and / as directory separators, independent of the operating system. |
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* Note: basename() operates naively on the input string, and is not aware of the |
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* actual filesystem, or path components such as "..". |
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* @param string $path A path string. |
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* @param string $suffix If the name component ends in suffix this will also be cut off. |
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* @return string the trailing name component of the given path. |
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* @see http://www.php.net/manual/en/function.basename.php |
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*/ |
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public static function basename($path, $suffix = '') |
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{ |
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if (($len = mb_strlen($suffix)) > 0 && mb_substr($path, -$len) == $suffix) { |
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$path = mb_substr($path, 0, -$len); |
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} |
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$path = rtrim(str_replace('\\', '/', $path), '/\\'); |
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if (($pos = mb_strrpos($path, '/')) !== false) { |
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return mb_substr($path, $pos + 1); |
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} |
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return $path; |
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} |
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}
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