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<?php |
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namespace Matecat\SubFiltering\Utils; |
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class Utils { |
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/** |
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* @param string $needle |
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* @param string $haystack |
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* |
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* @return bool |
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*/ |
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public static function contains( $needle, $haystack ) { |
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return strpos( $haystack, $needle ) !== false; |
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} |
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/** |
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* Get the char code from a multibyte char |
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* |
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* 2/3 times faster than the old implementation |
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* |
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* @param $mb_char string Unicode Multibyte Char String |
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* |
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* @return int |
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* |
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*/ |
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public static function fastUnicode2ord( $mb_char ) { |
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switch ( strlen( $mb_char ) ) { |
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case 1: |
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return ord( $mb_char ); |
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case 2: |
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return ( ord( $mb_char[ 0 ] ) - 0xC0 ) * 0x40 + |
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ord( $mb_char[ 1 ] ) - 0x80; |
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case 3: |
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return ( ord( $mb_char[ 0 ] ) - 0xE0 ) * 0x1000 + |
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( ord( $mb_char[ 1 ] ) - 0x80 ) * 0x40 + |
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ord( $mb_char[ 2 ] ) - 0x80; |
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case 4: |
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return ( ord( $mb_char[ 0 ] ) - 0xF0 ) * 0x40000 + |
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( ord( $mb_char[ 1 ] ) - 0x80 ) * 0x1000 + |
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( ord( $mb_char[ 2 ] ) - 0x80 ) * 0x40 + |
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ord( $mb_char[ 3 ] ) - 0x80; |
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} |
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return 20; //as default return a space ( should never happen ) |
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} |
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/** |
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* @param $str |
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* |
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* @return string |
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*/ |
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public static function htmlentitiesFromUnicode( $str ) { |
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return "&#" . self::fastUnicode2ord( $str[ 1 ] ) . ";"; |
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} |
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/** |
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* multibyte string manipulation functions |
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* source : http://stackoverflow.com/questions/9361303/can-i-get-the-unicode-value-of-a-character-or-vise-versa-with-php |
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* original source : PHPExcel libary (http://phpexcel.codeplex.com/) |
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* get the char from unicode code |
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* |
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* @param $o |
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* |
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* @return string |
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*/ |
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public static function unicode2chr( $o ) { |
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if ( function_exists( 'mb_convert_encoding' ) ) { |
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return mb_convert_encoding( '&#' . intval( $o ) . ';', 'UTF-8', 'HTML-ENTITIES' ); |
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} |
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return chr( intval( $o ) ); |
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} |
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} |
matecat /
subfiltering
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