regexp.php

<?php

class Regex
{
	public static function valid($type, $subject){


		
		switch ($type) {
			case 'integer': $pattern = '/^\d+$/'; break;
			case 'float': $pattern = '/^[-+]?[0-9]*\.[0-9]+([eE][-+]?[0-9]+)?$/'; break;
			case 'email': $pattern = '/[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}/'; break;
			case 'date': $pattern = '/^(?:(?:31(\/|-|\.)(?:0?[13578]|1[02]|(?:Jan|Mar|May|Jul|Aug|Oct|Dec)))\1|(?:(?:29|30)(\/|-|\.)(?:0?[1,3-9]|1[0-2]|(?:Jan|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec))\2))(?:(?:1[6-9]|[2-9]\d)?\d{2})$|^(?:29(\/|-|\.)(?:0?2|(?:Feb))\3(?:(?:(?:1[6-9]|[2-9]\d)?(?:0[48]|[2468][048]|[13579][26])|(?:(?:16|[2468][048]|[3579][26])00))))$|^(?:0?[1-9]|1\d|2[0-8])(\/|-|\.)(?:(?:0?[1-9]|(?:Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep))|(?:1[0-2]|(?:Oct|Nov|Dec)))\4(?:(?:1[6-9]|[2-9]\d)?\d{2})$/'; break;
			case 'dayofweek': $pattern = '/^(sun|sunday|mon|monday|tue|tuesday|wed|wednesday|thu|thursday|fri|friday|sat|saturday)$/gi'; break;
			case 'base64':
				$pattern = '/(base64)/'; break;
			default:
				$pattern = false;
				break;
		}
		if($pattern){
			return preg_match($pattern, $subject) ? true : false;
		}
		return false;
	}



}