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: /**
15: * Validates if the given value is a valid date in the YYYY-MM-DD form.
16: *
17: * @category Jyxo
18: * @package Jyxo_Input
19: * @subpackage Validator
20: * @copyright Copyright (c) 2005-2011 Jyxo, s.r.o.
21: * @license https://github.com/jyxo/php/blob/master/license.txt
22: * @author Jan Pěček
23: */
24: class Jyxo_Input_Validator_IsDate extends Jyxo_Input_Validator_AbstractValidator
25: {
26: /**
27: * Validates a value.
28: *
29: * @param mixed $value Input value
30: * @return boolean
31: */
32: public function isValid($value)
33: {
34: $value = (string) $value;
35:
36: // Form check
37: if (!preg_match('~^(\d{4})-(\d{2})-(\d{2})$~', $value, $matches)) {
38: return false;
39: }
40:
41: list(, $year, $month, $day) = $matches;
42:
43: // Date validity check
44: if (!checkdate($month, $day, $year)) {
45: return false;
46: }
47:
48: return true;
49: }
50: }
51: