note 20739 deleted from function.ereg-replace by sander

If you want to replace URL with Links, you can't just replace www.php.net, because someone can write http://www.php.net use this: $string = preg_replace ("(http://[a-zA-Z1-9\-_\.]+\.[a-zA-Z1-9\-_]+\.[a-z]{2,3})","<a href=\"\\0\" target=\"_blank\">\\0</a>", $string); $string = preg_replace ("([ |\n][a-zA-Z1-9\-_\.]+\.[a-zA-Z1-9\-_]+\.[a-z]{2,3})", "<a href=\"http://\\0\" target=\"_blank\">\\0</a>", $string); the second one will only replace strings without something (a return or a space) in front. also, for e-mails: $string = preg_replace("([a-z]{1}[a-z1-9_\-\.]*@[a-z1-9]+\.[a-z]{2,3})", "<a href=\"mailto:\\0\">\\0</a>",$string);