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1 <?php
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2
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3 /*
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4 * This file is part of the Symfony package.
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5 *
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6 * (c) Fabien Potencier <fabien@symfony.com>
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7 *
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8 * For the full copyright and license information, please view the LICENSE
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9 * file that was distributed with this source code.
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10 */
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11
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12 namespace Symfony\Component\HttpKernel\Config;
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13
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14 use Symfony\Component\Config\Resource\SelfCheckingResourceInterface;
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15
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16 /**
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17 * EnvParametersResource represents resources stored in prefixed environment variables.
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18 *
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19 * @author Chris Wilkinson <chriswilkinson84@gmail.com>
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20 *
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21 * @deprecated since version 3.4, to be removed in 4.0
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22 */
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23 class EnvParametersResource implements SelfCheckingResourceInterface, \Serializable
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24 {
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25 /**
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26 * @var string
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27 */
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28 private $prefix;
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29
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30 /**
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31 * @var string
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32 */
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33 private $variables;
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34
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35 /**
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36 * @param string $prefix
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37 */
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38 public function __construct($prefix)
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39 {
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40 $this->prefix = $prefix;
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41 $this->variables = $this->findVariables();
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42 }
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43
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44 /**
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45 * {@inheritdoc}
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46 */
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47 public function __toString()
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48 {
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49 return serialize($this->getResource());
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50 }
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51
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52 /**
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53 * @return array An array with two keys: 'prefix' for the prefix used and 'variables' containing all the variables watched by this resource
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54 */
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55 public function getResource()
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56 {
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57 return ['prefix' => $this->prefix, 'variables' => $this->variables];
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58 }
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59
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60 /**
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61 * {@inheritdoc}
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62 */
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63 public function isFresh($timestamp)
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64 {
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65 return $this->findVariables() === $this->variables;
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66 }
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67
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68 /**
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69 * @internal
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70 */
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71 public function serialize()
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72 {
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73 return serialize(['prefix' => $this->prefix, 'variables' => $this->variables]);
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74 }
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75
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76 /**
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77 * @internal
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78 */
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79 public function unserialize($serialized)
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80 {
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81 if (\PHP_VERSION_ID >= 70000) {
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82 $unserialized = unserialize($serialized, ['allowed_classes' => false]);
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83 } else {
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84 $unserialized = unserialize($serialized);
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85 }
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86
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87 $this->prefix = $unserialized['prefix'];
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88 $this->variables = $unserialized['variables'];
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89 }
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90
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91 private function findVariables()
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92 {
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93 $variables = [];
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94
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95 foreach ($_SERVER as $key => $value) {
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96 if (0 === strpos($key, $this->prefix)) {
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97 $variables[$key] = $value;
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98 }
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99 }
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100
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101 ksort($variables);
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102
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103 return $variables;
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104 }
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105 }
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