I need a function to find an email in a string and then replace it with *****

Hide emails in a string

Thanks in advance if you got something laying around

What I got so far:

what could I use to match for emails?

$search = "@";

$replace = "**No Emails Allowed!**";

$pos = strpos($about, $search);

if (is_int($pos)) {
$len = strlen($search);
$about = substr_replace($about, $replace, $pos, $len);
}

PHP Code:

<?

$string = "email@email.com\n \n email@email.com \n email@email.com";
echo "$string\n";
$string = preg_replace("![^\s@]+@[\S]+!s", "*****", $string);
echo "$string\n";

?>

Output:

email@email.com
 
 email@email.com 
 email@email.com
*****
 
 ***** 
 *****