Mine

<?phpfunction getSubmit($array, $string = 'submit_') {	if(!is_array($array))		return false;		$c = strlen($string);		if(count($array) > 0) {		foreach($array as $key => $temp) {			if(substr($key,0,$c) == $string) {				return str_replace($string,'',$key);				break;			}		}	}	return false;}