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1 | <?php |
2 | /** | |
3 | * Zend Framework | |
4 | * | |
5 | * LICENSE | |
6 | * | |
7 | * This source file is subject to the new BSD license that is bundled | |
8 | * with this package in the file LICENSE.txt. | |
9 | * It is also available through the world-wide-web at this URL: | |
10 | * http://framework.zend.com/license/new-bsd | |
11 | * If you did not receive a copy of the license and are unable to | |
12 | * obtain it through the world-wide-web, please send an email | |
13 | * to license@zend.com so we can send you a copy immediately. | |
14 | * | |
15 | * @category Zend | |
16 | * @package Zend | |
17 | * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com) | |
18 | * @license http://framework.zend.com/license/new-bsd New BSD License | |
19 | * @version $Id: Exception.php 24593 2012-01-05 20:35:02Z matthew $ | |
20 | */ | |
21 | ||
22 | /** | |
23 | * @category Zend | |
24 | * @package Zend | |
25 | * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com) | |
26 | * @license http://framework.zend.com/license/new-bsd New BSD License | |
27 | */ | |
28 | class Zend_Exception extends Exception | |
29 | { | |
30 | /** | |
31 | * @var null|Exception | |
32 | */ | |
33 | private $_previous = null; | |
34 | ||
35 | /** | |
36 | * Construct the exception | |
37 | * | |
38 | * @param string $msg | |
39 | * @param int $code | |
40 | * @param Exception $previous | |
41 | * @return void | |
42 | */ | |
43 | public function __construct($msg = '', $code = 0, Exception $previous = null) | |
44 | { | |
45 | if (version_compare(PHP_VERSION, '5.3.0', '<')) { | |
46 | parent::__construct($msg, (int) $code); | |
47 | $this->_previous = $previous; | |
48 | } else { | |
49 | parent::__construct($msg, (int) $code, $previous); | |
50 | } | |
51 | } | |
52 | ||
53 | /** | |
54 | * Overloading | |
55 | * | |
56 | * For PHP < 5.3.0, provides access to the getPrevious() method. | |
57 | * | |
58 | * @param string $method | |
59 | * @param array $args | |
60 | * @return mixed | |
61 | */ | |
62 | public function __call($method, array $args) | |
63 | { | |
64 | if ('getprevious' == strtolower($method)) { | |
65 | return $this->_getPrevious(); | |
66 | } | |
67 | return null; | |
68 | } | |
69 | ||
70 | /** | |
71 | * String representation of the exception | |
72 | * | |
73 | * @return string | |
74 | */ | |
75 | public function __toString() | |
76 | { | |
77 | if (version_compare(PHP_VERSION, '5.3.0', '<')) { | |
78 | if (null !== ($e = $this->getPrevious())) { | |
79 | return $e->__toString() | |
80 | . "\n\nNext " | |
81 | . parent::__toString(); | |
82 | } | |
83 | } | |
84 | return parent::__toString(); | |
85 | } | |
86 | ||
87 | /** | |
88 | * Returns previous Exception | |
89 | * | |
90 | * @return Exception|null | |
91 | */ | |
92 | protected function _getPrevious() | |
93 | { | |
94 | return $this->_previous; | |
95 | } | |
96 | } |