Created
August 4, 2012 20:50
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PHP make it link class
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| class MakeItLink { | |
| protected function _link_www( $matches ) { | |
| $url = $matches[2]; | |
| $url = MakeItLink::cleanURL( $url ); | |
| if( empty( $url ) ) { | |
| return $matches[0]; | |
| } | |
| return "{$matches[1]}<a href='{$url}'>{$url}</a>"; | |
| } | |
| 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( | |
| '#(?<=[\s>])(\()?([\w]+?://(?:[\w\\x80-\\xff\#$%&~/\-=?@\[\](+]|[.,;:](?![\s<])|(?(1)\)(?![\s<])|\)))*)#is', | |
| array( 'MakeItLink', '_link_www' ), | |
| $text | |
| ); | |
| $text = preg_replace( '#(<a( [^>]+?>|>))<a [^>]+?>([^>]+?)</a></a>#i', "$1$3</a>", $text ); | |
| $text = trim( $text ); | |
| return $text; | |
| } | |
| } |
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