Group items tagged

class MakeItLink {     protected function _link_www( $matches ) {         $url = $matches[2];         $url = MakeItLink::cleanURL( $url );         if( empty( $url ) ) {             return $matches[0];         }           return "{$matches[1]}{$url}";     }       public function cleanURL( $url ) {         if( $url == '' ) {             return $url;         }           $url = preg_replace( "|[^a-z0-9-~+_.?#=!&;,/:%@$*'()x80-xff]|i", '', $url );         $url = str_replace( array( "%0d", "%0a" ), '', $url );         $url = str_replace( ";//", "://", $url );           /* If the URL doesn't appear to contain a scheme, we          * presume it needs http:// appended (unless a relative          * link starting with / or a php file).          */         if(             strpos( $url, ":" ) === false             && substr( $url, 0, 1 ) != "/"             && !preg_match( "|^[a-z0-9-]+?.php|i", $url )         ) {             $url = "http://{$url}";         }           // Replace ampersans and single quotes         $url = preg_replace( "|&([^#])(?![a-z]{2,8};)|", "&$1", $url );         $url = str_replace( "'", "'", $url );           return $url;     }       public function transform( $text ) {         $text = " {$text}";           $text = preg_replace_callback(             '#(?])(\()?([\w]+?://(?:[\w\\x80-\\xff\#$%&~/\-=?@\[\](+]|[.,;:](?![\s<])|(?(1)\)(?![\s<])|\)))*)#is',             array( 'MakeItLink', '_link_www' ),             $text         );           $text = preg_replace( '#(]+?>|>))]+?>([^>]+?)#i', "$1$3", $text )

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