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1 <?php |
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2 /** |
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3 * Zend Framework |
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4 * |
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5 * LICENSE |
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6 * |
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7 * This source file is subject to the new BSD license that is bundled |
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8 * with this package in the file LICENSE.txt. |
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9 * It is also available through the world-wide-web at this URL: |
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10 * http://framework.zend.com/license/new-bsd |
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11 * If you did not receive a copy of the license and are unable to |
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12 * obtain it through the world-wide-web, please send an email |
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13 * to license@zend.com so we can send you a copy immediately. |
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14 * |
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15 * @category Zend |
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16 * @package Zend |
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17 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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18 * @license http://framework.zend.com/license/new-bsd New BSD License |
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19 * @version $Id: Exception.php 20978 2010-02-08 15:35:25Z matthew $ |
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20 */ |
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21 |
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22 /** |
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23 * @category Zend |
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24 * @package Zend |
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25 * @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com) |
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26 * @license http://framework.zend.com/license/new-bsd New BSD License |
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27 */ |
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28 class Zend_Exception extends Exception |
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29 { |
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30 /** |
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31 * @var null|Exception |
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32 */ |
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33 private $_previous = null; |
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34 |
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35 /** |
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36 * Construct the exception |
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37 * |
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38 * @param string $msg |
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39 * @param int $code |
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40 * @param Exception $previous |
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41 * @return void |
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42 */ |
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43 public function __construct($msg = '', $code = 0, Exception $previous = null) |
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44 { |
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45 if (version_compare(PHP_VERSION, '5.3.0', '<')) { |
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46 parent::__construct($msg, (int) $code); |
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47 $this->_previous = $previous; |
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48 } else { |
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49 parent::__construct($msg, (int) $code, $previous); |
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50 } |
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51 } |
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52 |
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53 /** |
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54 * Overloading |
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55 * |
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56 * For PHP < 5.3.0, provides access to the getPrevious() method. |
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57 * |
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58 * @param string $method |
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59 * @param array $args |
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60 * @return mixed |
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61 */ |
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62 public function __call($method, array $args) |
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63 { |
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64 if ('getprevious' == strtolower($method)) { |
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65 return $this->_getPrevious(); |
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66 } |
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67 return null; |
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68 } |
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69 |
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70 /** |
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71 * String representation of the exception |
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72 * |
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73 * @return string |
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74 */ |
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75 public function __toString() |
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76 { |
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77 if (version_compare(PHP_VERSION, '5.3.0', '<')) { |
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78 if (null !== ($e = $this->getPrevious())) { |
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79 return $e->__toString() |
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80 . "\n\nNext " |
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81 . parent::__toString(); |
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82 } |
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83 } |
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84 return parent::__toString(); |
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85 } |
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86 |
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87 /** |
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88 * Returns previous Exception |
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89 * |
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90 * @return Exception|null |
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91 */ |
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92 protected function _getPrevious() |
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93 { |
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94 return $this->_previous; |
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95 } |
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96 } |