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 (Czech) Tax ID.
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 Jaroslav Hanslík
23:  */
24: class Jyxo_Input_Validator_IsTaxId extends Jyxo_Input_Validator_AbstractValidator
25: {
26:     /**
27:      * Strict check.
28:      *
29:      * If turned on, validity of IČ/birth number is also performed. If not, only length is checked.
30:      *
31:      * @var boolean
32:      */
33:     private $strict = true;
34: 
35:     /**
36:      * Constructor.
37:      *
38:      * @param boolean $strict Turns strict checking on or off.
39:      */
40:     public function __construct($strict = true)
41:     {
42:         $this->strict = (bool) $strict;
43:     }
44: 
45:     /**
46:      * Validates a value.
47:      *
48:      * @param mixed $value Input value
49:      * @return boolean
50:      */
51:     public function isValid($value)
52:     {
53:         // Removes spaces
54:         $taxId = preg_replace('~\s+~', '', (string) $value);
55: 
56:         $sub = '';
57:         // New Tax ID format since 1st May 2004
58:         if (preg_match('~^CZ(\d{8,10})$~', $taxId, $matches)) {
59:             $sub = $matches[1];
60:             // But to be sure we try the old one as well
61:         } elseif (preg_match('~^\d{3}-(\d{8,10})$~', $taxId, $matches)) {
62:             $sub = $matches[1];
63:         }
64:         if (!empty($sub)) {
65:             // Strict checking off - allows the so called "own numbers"
66:             if (!$this->strict) {
67:                 return true;
68:             }
69: 
70:             // Checks if it is a valid IČ
71:             if (Jyxo_Input_Validator_IsCompanyId::validate($sub)) {
72:                 return true;
73:             }
74: 
75:             // Checks if it is a valid birth number
76:             if (Jyxo_Input_Validator_IsBirthNumber::validate($sub)) {
77:                 return true;
78:             }
79:         }
80: 
81:         return false;
82:     }
83: }
84: