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| 1 | <?php |
| 2 | /** |
| 3 | * Pop PHP Framework (https://www.popphp.org/) |
| 4 | * |
| 5 | * @link https://github.com/popphp/popphp-framework |
| 6 | * @author Nick Sagona, III <dev@noladev.com> |
| 7 | * @copyright Copyright (c) 2009-2025 NOLA Interactive, LLC. |
| 8 | * @license https://www.popphp.org/license New BSD License |
| 9 | */ |
| 10 | |
| 11 | /** |
| 12 | * @namespace |
| 13 | */ |
| 14 | namespace Pop\Cache\Adapter; |
| 15 | |
| 16 | /** |
| 17 | * Session adapter cache class |
| 18 | * |
| 19 | * @category Pop |
| 20 | * @package Pop\Cache |
| 21 | * @author Nick Sagona, III <dev@noladev.com> |
| 22 | * @copyright Copyright (c) 2009-2025 NOLA Interactive, LLC. |
| 23 | * @license https://www.popphp.org/license New BSD License |
| 24 | * @version 4.0.2 |
| 25 | */ |
| 26 | class Session extends AbstractAdapter |
| 27 | { |
| 28 | |
| 29 | /** |
| 30 | * Constructor |
| 31 | * |
| 32 | * Instantiate the cache session object |
| 33 | * |
| 34 | * @param int $ttl |
| 35 | */ |
| 36 | public function __construct(int $ttl = 0) |
| 37 | { |
| 38 | parent::__construct($ttl); |
| 39 | if (session_id() == '') { |
| 40 | session_start(); |
| 41 | } |
| 42 | if (!isset($_SESSION['_POP_CACHE_'])) { |
| 43 | $_SESSION['_POP_CACHE_'] = []; |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Get the time-to-live for an item in cache |
| 49 | * |
| 50 | * @param string $id |
| 51 | * @return int |
| 52 | */ |
| 53 | public function getItemTtl(string $id): int |
| 54 | { |
| 55 | $ttl = 0; |
| 56 | |
| 57 | if (isset($_SESSION['_POP_CACHE_'][$id])) { |
| 58 | $cacheValue = unserialize($_SESSION['_POP_CACHE_'][$id]); |
| 59 | $ttl = $cacheValue['ttl']; |
| 60 | } |
| 61 | |
| 62 | return $ttl; |
| 63 | } |
| 64 | |
| 65 | /** |
| 66 | * Save an item to cache |
| 67 | * |
| 68 | * @param string $id |
| 69 | * @param mixed $value |
| 70 | * @param ?int $ttl |
| 71 | * @return Session |
| 72 | */ |
| 73 | public function saveItem(string $id, mixed $value, ?int $ttl = null): Session |
| 74 | { |
| 75 | $_SESSION['_POP_CACHE_'][$id] = serialize([ |
| 76 | 'start' => time(), |
| 77 | 'ttl' => ($ttl !== null) ? $ttl : $this->ttl, |
| 78 | 'value' => $value |
| 79 | ]); |
| 80 | return $this; |
| 81 | } |
| 82 | |
| 83 | /** |
| 84 | * Get an item from cache |
| 85 | * |
| 86 | * @param string $id |
| 87 | * @return mixed |
| 88 | */ |
| 89 | public function getItem(string $id): mixed |
| 90 | { |
| 91 | $value = false; |
| 92 | |
| 93 | if (isset($_SESSION['_POP_CACHE_'][$id])) { |
| 94 | $cacheValue = unserialize($_SESSION['_POP_CACHE_'][$id]); |
| 95 | if (($cacheValue['ttl'] == 0) || ((time() - $cacheValue['start']) <= $cacheValue['ttl'])) { |
| 96 | $value = $cacheValue['value']; |
| 97 | } else { |
| 98 | $this->deleteItem($id); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | return $value; |
| 103 | } |
| 104 | |
| 105 | /** |
| 106 | * Determine if the item exist in cache |
| 107 | * |
| 108 | * @param string $id |
| 109 | * @return bool |
| 110 | */ |
| 111 | public function hasItem(string $id): bool |
| 112 | { |
| 113 | $result = false; |
| 114 | |
| 115 | if (isset($_SESSION['_POP_CACHE_'][$id])) { |
| 116 | $cacheValue = unserialize($_SESSION['_POP_CACHE_'][$id]); |
| 117 | $result = (($cacheValue['ttl'] == 0) || ((time() - $cacheValue['start']) <= $cacheValue['ttl'])); |
| 118 | } |
| 119 | |
| 120 | return $result; |
| 121 | } |
| 122 | |
| 123 | /** |
| 124 | * Delete a value in cache |
| 125 | * |
| 126 | * @param string $id |
| 127 | * @return Session |
| 128 | */ |
| 129 | public function deleteItem(string $id): Session |
| 130 | { |
| 131 | if (isset($_SESSION['_POP_CACHE_'][$id])) { |
| 132 | unset($_SESSION['_POP_CACHE_'][$id]); |
| 133 | } |
| 134 | return $this; |
| 135 | } |
| 136 | |
| 137 | /** |
| 138 | * Clear all stored values from cache |
| 139 | * |
| 140 | * @return Session |
| 141 | */ |
| 142 | public function clear(): Session |
| 143 | { |
| 144 | $_SESSION['_POP_CACHE_'] = []; |
| 145 | return $this; |
| 146 | } |
| 147 | |
| 148 | /** |
| 149 | * Destroy cache resource |
| 150 | * |
| 151 | * @return Session |
| 152 | */ |
| 153 | public function destroy(): Session |
| 154 | { |
| 155 | $_SESSION = null; |
| 156 | session_unset(); |
| 157 | session_destroy(); |
| 158 | return $this; |
| 159 | } |
| 160 | } |