1: <?php
2:
3: /**
4: * Jyxo PHP Library
5: *
6: * LICENSE
7: *
8: * This source file is subject to the new BSD license that is bundled
9: * with this package in the file license.txt.
10: * It is also available through the world-wide-web at this URL:
11: * https://github.com/jyxo/php/blob/master/license.txt
12: */
13:
14: namespace Jyxo\Input\Validator;
15:
16: /**
17: * Validates if the given value is a valid date in the YYYY-MM-DD form.
18: *
19: * @category Jyxo
20: * @package Jyxo\Input
21: * @subpackage Validator
22: * @copyright Copyright (c) 2005-2011 Jyxo, s.r.o.
23: * @license https://github.com/jyxo/php/blob/master/license.txt
24: * @author Jan Pěček
25: */
26: class IsDate extends \Jyxo\Input\Validator\AbstractValidator
27: {
28: /**
29: * Validates a value.
30: *
31: * @param mixed $value Input value
32: * @return boolean
33: */
34: public function isValid($value)
35: {
36: $value = (string) $value;
37:
38: // Form check
39: if (!preg_match('~^(\d{4})-(\d{2})-(\d{2})$~', $value, $matches)) {
40: return false;
41: }
42:
43: list(, $year, $month, $day) = $matches;
44:
45: // Date validity check
46: if (!checkdate($month, $day, $year)) {
47: return false;
48: }
49:
50: return true;
51: }
52: }
53: