Mine

<?php	function slash_me ($str) { 		#$str = preg_replace('/^\/me/', '* foo', $str);		$s1 = '/^\/me/';		$s2 = '<span style="color:red;">* foo </span>';		$str = preg_replace ($s1, $s2, $str);		return $str;	}?><?php	$string = nl2br($_POST['string']);	if (empty($string)) { echo "damn empty"; }	else {	echo slash_me($string); }?><form action="" method="post"><textarea name="string"></textarea><input type="submit" name="click" /></form>