' . $url . ''; } # url_callback() /** * email_callback() * * @param array $match * @return string $text **/ function email_callback($match) { $email = end($match); return '' . $email . ''; } # email_callback() /** * escape() * * @param string $text * @return string $text **/ function escape($text) { global $escape_autolink_uri; if ( !isset($escape_autolink_uri) ) $escape_autolink_uri = array(); foreach ( array( 'head' => "/ .*? <\s*\/\s*head\s*> /isx", 'blocks' => "/ <\s*(script|style|object|textarea)(?:\s.*?)?> .*? <\s*\/\s*\\1\s*> /isx", 'smart_links' => "/ \[.+?\] /x", 'anchors' => "/ <\s*a\s.+?>.+?<\s*\/\s*a\s*> /isx", 'tags' => "/ <[^<>]+?(?:src|href|codebase|archive|usemap|data|value)=[^<>]+?> /ix", ) as $regex ) { $text = preg_replace_callback($regex, array('autolink_uri', 'escape_callback'), $text); } return $text; } # escape() /** * escape_callback() * * @param array $match * @return string $tag_id **/ function escape_callback($match) { global $escape_autolink_uri; $tag_id = "----escape_autolink_uri:" . md5($match[0]) . "----"; $escape_autolink_uri[$tag_id] = $match[0]; return $tag_id; } # escape_callback() /** * unescape() * * @param string $text * @return string $text **/ function unescape($text) { global $escape_autolink_uri; if ( !$escape_autolink_uri ) return $text; $text = preg_replace_callback("/ ----escape_autolink_uri:[a-f0-9]{32}---- /x", array('autolink_uri', 'unescape_callback'), $text); return $text; } # unescape() /** * unescape_callback() * * @param array $match * @return string $text **/ function unescape_callback($match) { global $escape_autolink_uri; return $escape_autolink_uri[$match[0]]; return $match[0]; } # unescape_callback() } # autolink_uri ?>