function text2links($str='') { if($str=='' or !preg_match('/(http|www\.|@)/i', $str)) { return $str; } $lines = explode("\n", $str); $new_text = ''; while (list($k,$l) = each($lines)) { // replace links: $l = preg_replace("/([ \t]|^)www\./i", "\\1http://www.", $l); $l = preg_replace("/([ \t]|^)ftp\./i", "\\1ftp://ftp.", $l); $l = preg_replace("/(http:\/\/[^ )\r\n!]+)/i", "<a href=\"\\1\">\\1</a>", $l); $l = preg_replace("/(https:\/\/[^ )\r\n!]+)/i", "<a href=\"\\1\">\\1</a>", $l); $l = preg_replace("/(ftp:\/\/[^ )\r\n!]+)/i", "<a href=\"\\1\">\\1</a>", $l); $l = preg_replace( "/([-a-z0-9_]+(\.[_a-z0-9-]+)*@([a-z0-9-]+(\.[a-z0-9-]+)+))/i", "<a href=\"mailto:\\1\">\\1</a>", $l); $new_text .= $l."\n"; } return $new_text; } //Example: $text = "Visit www.jonasjohn.de :-)"; print text2links($text);