i found this code for checking a text area:
if (strpos($textp, "http://") !== false ||
ereg("(www.[a-zA-Z0-9_-]+)\.([a-zA-Z0-9.]+)",$textp)){
$textp = '';
} else {
because ereg is depreacted I would like to replacy by preg_match instead. But if I replace I got an error according to \ So what I should I exactly edit to get the same result - no URLs or elements of that inn that text area.
you just need to add /
like
preg_match("/(www.[a-zA-Z0-9_-]+)\.([a-zA-Z0-9.]+)/",$textp)
please refer to preg_match