Complex classes like SessionFunctions often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes. You can also have a look at the cohesion graph to spot any un-connected, or weakly-connected components.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use SessionFunctions, and based on these observations, apply Extract Interface, too.
| 1 | <?php namespace Limoncello\Application\Session; |
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| 31 | class SessionFunctions implements SessionFunctionsInterface |
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| 32 | { |
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| 33 | /** |
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| 34 | * @var callable |
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| 35 | */ |
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| 36 | private $retrieveCallable; |
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| 37 | |||
| 38 | /** |
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| 39 | * @var callable |
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| 40 | */ |
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| 41 | private $putCallable; |
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| 42 | |||
| 43 | /** |
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| 44 | * @var callable |
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| 45 | */ |
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| 46 | private $hasCallable; |
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| 47 | |||
| 48 | /** |
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| 49 | * @var callable |
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| 50 | */ |
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| 51 | private $deleteCallable; |
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| 52 | |||
| 53 | /** |
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| 54 | * @var callable |
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| 55 | */ |
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| 56 | private $iteratorCallable; |
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| 57 | |||
| 58 | /** |
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| 59 | * @var callable |
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| 60 | */ |
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| 61 | private $abortCallable; |
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| 62 | |||
| 63 | /** |
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| 64 | * @var callable |
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| 65 | */ |
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| 66 | private $cacheLimiterCallable; |
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| 67 | |||
| 68 | /** |
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| 69 | * @var callable |
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| 70 | */ |
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| 71 | private $createIdCallable; |
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| 72 | |||
| 73 | /** |
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| 74 | * @var callable |
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| 75 | */ |
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| 76 | private $writeCloseCallable; |
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| 77 | |||
| 78 | /** |
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| 79 | * @var callable |
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| 80 | */ |
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| 81 | private $unsetCallable; |
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| 82 | |||
| 83 | /** |
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| 84 | * @var callable |
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| 85 | */ |
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| 86 | private $statusCallable; |
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| 87 | |||
| 88 | /** |
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| 89 | * @var callable |
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| 90 | */ |
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| 91 | private $startCallable; |
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| 92 | |||
| 93 | /** |
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| 94 | * @var callable |
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| 95 | */ |
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| 96 | private $setSaveHandlerCallable; |
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| 97 | |||
| 98 | /** |
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| 99 | * @var callable |
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| 100 | */ |
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| 101 | private $setCookieParamsCallable; |
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| 102 | |||
| 103 | /** |
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| 104 | * @var callable |
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| 105 | */ |
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| 106 | private $savePathCallable; |
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| 107 | |||
| 108 | /** |
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| 109 | * @var callable |
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| 110 | */ |
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| 111 | private $resetCallable; |
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| 112 | |||
| 113 | /** |
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| 114 | * @var callable |
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| 115 | */ |
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| 116 | private $registerShutdownCallable; |
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| 117 | |||
| 118 | /** |
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| 119 | * @var callable |
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| 120 | */ |
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| 121 | private $regenerateIdCallable; |
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| 122 | |||
| 123 | /** |
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| 124 | * @var callable |
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| 125 | */ |
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| 126 | private $nameCallable; |
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| 127 | |||
| 128 | /** |
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| 129 | * @var callable |
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| 130 | */ |
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| 131 | private $moduleNameCallable; |
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| 132 | |||
| 133 | /** |
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| 134 | * @var callable |
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| 135 | */ |
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| 136 | private $decodeCallable; |
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| 137 | |||
| 138 | /** |
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| 139 | * @var callable |
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| 140 | */ |
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| 141 | private $destroyCallable; |
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| 142 | |||
| 143 | /** |
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| 144 | * @var callable |
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| 145 | */ |
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| 146 | private $encodeCallable; |
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| 147 | |||
| 148 | /** |
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| 149 | * @var callable |
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| 150 | */ |
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| 151 | private $gcCallable; |
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| 152 | |||
| 153 | /** |
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| 154 | * @var callable |
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| 155 | */ |
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| 156 | private $getCookieParamsCallable; |
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| 157 | |||
| 158 | /** |
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| 159 | * @var callable |
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| 160 | */ |
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| 161 | private $idCallable; |
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| 162 | |||
| 163 | /** |
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| 164 | * @var callable |
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| 165 | */ |
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| 166 | private $cacheExpireCallable; |
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| 167 | |||
| 168 | /** |
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| 169 | * @var callable |
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| 170 | */ |
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| 171 | private $couldBeStartedCallable; |
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| 172 | |||
| 173 | /** |
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| 174 | * Constructor. |
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| 175 | */ |
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| 176 | 3 | public function __construct() |
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| 220 | |||
| 221 | /** |
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| 222 | * @inheritdoc |
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| 223 | */ |
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| 224 | 1 | public function getRetrieveCallable(): callable |
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| 228 | |||
| 229 | /** |
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| 230 | * @inheritdoc |
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| 231 | */ |
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| 232 | 3 | public function setRetrieveCallable(callable $callable): SessionFunctionsInterface |
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| 238 | |||
| 239 | /** |
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| 240 | * @inheritdoc |
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| 241 | */ |
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| 242 | 1 | public function getPutCallable(): callable |
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| 246 | |||
| 247 | /** |
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| 248 | * @inheritdoc |
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| 249 | */ |
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| 250 | 3 | public function setPutCallable(callable $callable): SessionFunctionsInterface |
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| 256 | |||
| 257 | /** |
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| 258 | * @inheritdoc |
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| 259 | */ |
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| 260 | 1 | public function getHasCallable(): callable |
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| 264 | |||
| 265 | /** |
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| 266 | * @inheritdoc |
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| 267 | */ |
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| 268 | 3 | public function setHasCallable(callable $callable): SessionFunctionsInterface |
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| 274 | |||
| 275 | /** |
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| 276 | * @inheritdoc |
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| 277 | */ |
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| 278 | 1 | public function getDeleteCallable(): callable |
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| 282 | |||
| 283 | /** |
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| 284 | * @inheritdoc |
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| 285 | */ |
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| 286 | 3 | public function setDeleteCallable(callable $callable): SessionFunctionsInterface |
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| 292 | |||
| 293 | /** |
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| 294 | * @inheritdoc |
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| 295 | */ |
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| 296 | 1 | public function getIteratorCallable(): callable |
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| 300 | |||
| 301 | /** |
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| 302 | * @inheritdoc |
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| 303 | */ |
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| 304 | 3 | public function setIteratorCallable(callable $callable): SessionFunctionsInterface |
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| 310 | |||
| 311 | /** |
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| 312 | * @inheritdoc |
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| 313 | */ |
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| 314 | 1 | public function getAbortCallable(): callable |
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| 318 | |||
| 319 | /** |
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| 320 | * @inheritdoc |
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| 321 | */ |
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| 322 | 3 | public function setAbortCallable(callable $callable): SessionFunctionsInterface |
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| 328 | |||
| 329 | /** |
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| 330 | * @inheritdoc |
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| 331 | */ |
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| 332 | 1 | public function getCacheExpireCallable(): callable |
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| 336 | |||
| 337 | /** |
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| 338 | * @inheritdoc |
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| 339 | */ |
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| 340 | 3 | public function setCacheExpireCallable(callable $callable): SessionFunctionsInterface |
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| 346 | |||
| 347 | /** |
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| 348 | * @inheritdoc |
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| 349 | */ |
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| 350 | 1 | public function getCacheLimiterCallable(): callable |
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| 354 | |||
| 355 | /** |
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| 356 | * @inheritdoc |
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| 357 | */ |
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| 358 | 3 | public function setCacheLimiterCallable(callable $callable): SessionFunctionsInterface |
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| 364 | |||
| 365 | /** |
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| 366 | * @inheritdoc |
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| 367 | */ |
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| 368 | 1 | public function getCreateIdCallable(): callable |
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| 372 | |||
| 373 | /** |
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| 374 | * @inheritdoc |
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| 375 | */ |
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| 376 | 3 | public function setCreateIdCallable(callable $callable): SessionFunctionsInterface |
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| 382 | |||
| 383 | /** |
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| 384 | * @inheritdoc |
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| 385 | */ |
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| 386 | 1 | public function getDecodeCallable(): callable |
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| 390 | |||
| 391 | /** |
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| 392 | * @inheritdoc |
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| 393 | */ |
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| 394 | 3 | public function setDecodeCallable(callable $callable): SessionFunctionsInterface |
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| 400 | |||
| 401 | /** |
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| 402 | * @inheritdoc |
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| 403 | */ |
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| 404 | 1 | public function getDestroyCallable(): callable |
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| 408 | |||
| 409 | /** |
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| 410 | * @inheritdoc |
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| 411 | */ |
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| 412 | 3 | public function setDestroyCallable(callable $callable): SessionFunctionsInterface |
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| 418 | |||
| 419 | /** |
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| 420 | * @inheritdoc |
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| 421 | */ |
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| 422 | 1 | public function getEncodeCallable(): callable |
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| 426 | |||
| 427 | /** |
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| 428 | * @inheritdoc |
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| 429 | */ |
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| 430 | 3 | public function setEncodeCallable(callable $callable): SessionFunctionsInterface |
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| 436 | |||
| 437 | /** |
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| 438 | * @inheritdoc |
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| 439 | */ |
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| 440 | 1 | public function getGcCallable(): callable |
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| 444 | |||
| 445 | /** |
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| 446 | * @inheritdoc |
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| 447 | */ |
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| 448 | 3 | public function setGcCallable(callable $callable): SessionFunctionsInterface |
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| 454 | |||
| 455 | /** |
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| 456 | * @inheritdoc |
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| 457 | */ |
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| 458 | 1 | public function getGetCookieParamsCallable(): callable |
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| 462 | |||
| 463 | /** |
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| 464 | * @inheritdoc |
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| 465 | */ |
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| 466 | 3 | public function setGetCookieParamsCallable(callable $callable): SessionFunctionsInterface |
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| 472 | |||
| 473 | /** |
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| 474 | * @inheritdoc |
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| 475 | */ |
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| 476 | 1 | public function getIdCallable(): callable |
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| 480 | |||
| 481 | /** |
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| 482 | * @inheritdoc |
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| 483 | */ |
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| 484 | 3 | public function setIdCallable(callable $callable): SessionFunctionsInterface |
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| 490 | |||
| 491 | /** |
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| 492 | * @inheritdoc |
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| 493 | */ |
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| 494 | 1 | public function getModuleNameCallable(): callable |
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| 498 | |||
| 499 | /** |
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| 500 | * @inheritdoc |
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| 501 | */ |
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| 502 | 3 | public function setModuleNameCallable(callable $callable): SessionFunctionsInterface |
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| 508 | |||
| 509 | /** |
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| 510 | * @inheritdoc |
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| 511 | */ |
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| 512 | 1 | public function getNameCallable(): callable |
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| 516 | |||
| 517 | /** |
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| 518 | * @inheritdoc |
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| 519 | */ |
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| 520 | 3 | public function setNameCallable(callable $callable): SessionFunctionsInterface |
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| 526 | |||
| 527 | /** |
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| 528 | * @inheritdoc |
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| 529 | */ |
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| 530 | 1 | public function getRegenerateIdCallable(): callable |
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| 534 | |||
| 535 | /** |
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| 536 | * @inheritdoc |
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| 537 | */ |
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| 538 | 3 | public function setRegenerateIdCallable(callable $callable): SessionFunctionsInterface |
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| 544 | |||
| 545 | /** |
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| 546 | * @inheritdoc |
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| 547 | */ |
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| 548 | 1 | public function getRegisterShutdownCallable(): callable |
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| 552 | |||
| 553 | /** |
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| 554 | * @inheritdoc |
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| 555 | */ |
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| 556 | 3 | public function setRegisterShutdownCallable(callable $callable): SessionFunctionsInterface |
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| 562 | |||
| 563 | /** |
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| 564 | * @inheritdoc |
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| 565 | */ |
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| 566 | 1 | public function getResetCallable(): callable |
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| 570 | |||
| 571 | /** |
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| 572 | * @inheritdoc |
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| 573 | */ |
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| 574 | 3 | public function setResetCallable(callable $callable): SessionFunctionsInterface |
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| 580 | |||
| 581 | /** |
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| 582 | * @inheritdoc |
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| 583 | */ |
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| 584 | 1 | public function getSavePathCallable(): callable |
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| 588 | |||
| 589 | /** |
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| 590 | * @inheritdoc |
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| 591 | */ |
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| 592 | 3 | public function setSavePathCallable(callable $callable): SessionFunctionsInterface |
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| 598 | |||
| 599 | /** |
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| 600 | * @inheritdoc |
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| 601 | */ |
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| 602 | 1 | public function getSetCookieParamsCallable(): callable |
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| 606 | |||
| 607 | /** |
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| 608 | * @inheritdoc |
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| 609 | */ |
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| 610 | 3 | public function setSetCookieParamsCallable(callable $callable): SessionFunctionsInterface |
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| 616 | |||
| 617 | /** |
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| 618 | * @inheritdoc |
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| 619 | */ |
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| 620 | 1 | public function getSetSaveHandlerCallable(): callable |
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| 624 | |||
| 625 | /** |
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| 626 | * @inheritdoc |
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| 627 | */ |
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| 628 | 3 | public function setSetSaveHandlerCallable(callable $callable): SessionFunctionsInterface |
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| 634 | |||
| 635 | /** |
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| 636 | * @inheritdoc |
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| 637 | */ |
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| 638 | 2 | public function getStartCallable(): callable |
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| 642 | |||
| 643 | /** |
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| 644 | * @inheritdoc |
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| 645 | */ |
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| 646 | 3 | public function setStartCallable(callable $callable): SessionFunctionsInterface |
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| 652 | |||
| 653 | /** |
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| 654 | * @inheritdoc |
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| 655 | */ |
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| 656 | 1 | public function getStatusCallable(): callable |
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| 660 | |||
| 661 | /** |
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| 662 | * @inheritdoc |
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| 663 | */ |
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| 664 | 3 | public function setStatusCallable(callable $callable): SessionFunctionsInterface |
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| 670 | |||
| 671 | /** |
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| 672 | * @inheritdoc |
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| 673 | */ |
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| 674 | 1 | public function getUnsetCallable(): callable |
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| 678 | |||
| 679 | /** |
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| 680 | * @inheritdoc |
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| 681 | */ |
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| 682 | 3 | public function setUnsetCallable(callable $callable): SessionFunctionsInterface |
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| 688 | |||
| 689 | /** |
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| 690 | * @inheritdoc |
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| 691 | */ |
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| 692 | 2 | public function getWriteCloseCallable(): callable |
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| 696 | |||
| 697 | /** |
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| 698 | * @inheritdoc |
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| 699 | */ |
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| 700 | 3 | public function setWriteCloseCallable(callable $callable): SessionFunctionsInterface |
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| 706 | |||
| 707 | /** |
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| 708 | * @inheritdoc |
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| 709 | */ |
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| 710 | 1 | public function getCouldBeStartedCallable(): callable |
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| 714 | |||
| 715 | /** |
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| 716 | * @inheritdoc |
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| 717 | */ |
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| 718 | 3 | public function setCouldBeStartedCallable(callable $callable): SessionFunctionsInterface |
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| 724 | } |
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| 725 |