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 | /** |
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| 163 | * @var callable |
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| 164 | */ |
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| 165 | private $cacheExpireCallable; |
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| 166 | |||
| 167 | /** |
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| 168 | * Constructor. |
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| 169 | */ |
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| 170 | public function __construct() |
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| 211 | |||
| 212 | /** |
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| 213 | * @inheritdoc |
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| 214 | */ |
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| 215 | 1 | public function getRetrieveCallable(): callable |
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| 219 | |||
| 220 | /** |
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| 221 | * @inheritdoc |
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| 222 | */ |
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| 223 | 3 | public function setRetrieveCallable(callable $callable): SessionFunctionsInterface |
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| 229 | |||
| 230 | /** |
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| 231 | * @inheritdoc |
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| 232 | */ |
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| 233 | 1 | public function getPutCallable(): callable |
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| 237 | |||
| 238 | /** |
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| 239 | * @inheritdoc |
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| 240 | */ |
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| 241 | 3 | public function setPutCallable(callable $callable): SessionFunctionsInterface |
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| 247 | |||
| 248 | /** |
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| 249 | * @inheritdoc |
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| 250 | */ |
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| 251 | 1 | public function getHasCallable(): callable |
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| 255 | |||
| 256 | /** |
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| 257 | * @inheritdoc |
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| 258 | */ |
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| 259 | 3 | public function setHasCallable(callable $callable): SessionFunctionsInterface |
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| 265 | |||
| 266 | /** |
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| 267 | * @inheritdoc |
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| 268 | */ |
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| 269 | 1 | public function getDeleteCallable(): callable |
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| 273 | |||
| 274 | /** |
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| 275 | * @inheritdoc |
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| 276 | */ |
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| 277 | 3 | public function setDeleteCallable(callable $callable): SessionFunctionsInterface |
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| 283 | |||
| 284 | /** |
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| 285 | * @inheritdoc |
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| 286 | */ |
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| 287 | 1 | public function getIteratorCallable(): callable |
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| 291 | |||
| 292 | /** |
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| 293 | * @inheritdoc |
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| 294 | */ |
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| 295 | 3 | public function setIteratorCallable(callable $callable): SessionFunctionsInterface |
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| 301 | |||
| 302 | /** |
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| 303 | * @inheritdoc |
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| 304 | */ |
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| 305 | 1 | public function getAbortCallable(): callable |
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| 309 | |||
| 310 | /** |
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| 311 | * @inheritdoc |
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| 312 | */ |
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| 313 | 3 | public function setAbortCallable(callable $callable): SessionFunctionsInterface |
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| 319 | |||
| 320 | /** |
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| 321 | * @inheritdoc |
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| 322 | */ |
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| 323 | 1 | public function getCacheExpireCallable(): callable |
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| 327 | |||
| 328 | /** |
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| 329 | * @inheritdoc |
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| 330 | */ |
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| 331 | 3 | public function setCacheExpireCallable(callable $callable): SessionFunctionsInterface |
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| 337 | |||
| 338 | /** |
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| 339 | * @inheritdoc |
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| 340 | */ |
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| 341 | 1 | public function getCacheLimiterCallable(): callable |
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| 345 | |||
| 346 | /** |
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| 347 | * @inheritdoc |
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| 348 | */ |
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| 349 | 3 | public function setCacheLimiterCallable(callable $callable): SessionFunctionsInterface |
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| 355 | |||
| 356 | /** |
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| 357 | * @inheritdoc |
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| 358 | */ |
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| 359 | 1 | public function getCreateIdCallable(): callable |
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| 363 | |||
| 364 | /** |
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| 365 | * @inheritdoc |
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| 366 | */ |
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| 367 | 3 | public function setCreateIdCallable(callable $callable): SessionFunctionsInterface |
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| 373 | |||
| 374 | /** |
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| 375 | * @inheritdoc |
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| 376 | */ |
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| 377 | 1 | public function getDecodeCallable(): callable |
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| 381 | |||
| 382 | /** |
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| 383 | * @inheritdoc |
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| 384 | */ |
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| 385 | 3 | public function setDecodeCallable(callable $callable): SessionFunctionsInterface |
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| 391 | |||
| 392 | /** |
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| 393 | * @inheritdoc |
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| 394 | */ |
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| 395 | 1 | public function getDestroyCallable(): callable |
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| 399 | |||
| 400 | /** |
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| 401 | * @inheritdoc |
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| 402 | */ |
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| 403 | 3 | public function setDestroyCallable(callable $callable): SessionFunctionsInterface |
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| 409 | |||
| 410 | /** |
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| 411 | * @inheritdoc |
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| 412 | */ |
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| 413 | 1 | public function getEncodeCallable(): callable |
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| 417 | |||
| 418 | /** |
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| 419 | * @inheritdoc |
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| 420 | */ |
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| 421 | 3 | public function setEncodeCallable(callable $callable): SessionFunctionsInterface |
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| 427 | |||
| 428 | /** |
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| 429 | * @inheritdoc |
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| 430 | */ |
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| 431 | 1 | public function getGcCallable(): callable |
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| 435 | |||
| 436 | /** |
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| 437 | * @inheritdoc |
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| 438 | */ |
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| 439 | 3 | public function setGcCallable(callable $callable): SessionFunctionsInterface |
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| 445 | |||
| 446 | /** |
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| 447 | * @inheritdoc |
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| 448 | */ |
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| 449 | 1 | public function getGetCookieParamsCallable(): callable |
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| 453 | |||
| 454 | /** |
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| 455 | * @inheritdoc |
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| 456 | */ |
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| 457 | 3 | public function setGetCookieParamsCallable(callable $callable): SessionFunctionsInterface |
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| 463 | |||
| 464 | /** |
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| 465 | * @inheritdoc |
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| 466 | */ |
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| 467 | 1 | public function getIdCallable(): callable |
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| 471 | |||
| 472 | /** |
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| 473 | * @inheritdoc |
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| 474 | */ |
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| 475 | 3 | public function setIdCallable(callable $callable): SessionFunctionsInterface |
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| 481 | |||
| 482 | /** |
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| 483 | * @inheritdoc |
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| 484 | */ |
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| 485 | 1 | public function getModuleNameCallable(): callable |
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| 489 | |||
| 490 | /** |
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| 491 | * @inheritdoc |
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| 492 | */ |
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| 493 | 3 | public function setModuleNameCallable(callable $callable): SessionFunctionsInterface |
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| 499 | |||
| 500 | /** |
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| 501 | * @inheritdoc |
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| 502 | */ |
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| 503 | 1 | public function getNameCallable(): callable |
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| 507 | |||
| 508 | /** |
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| 509 | * @inheritdoc |
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| 510 | */ |
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| 511 | 3 | public function setNameCallable(callable $callable): SessionFunctionsInterface |
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| 517 | |||
| 518 | /** |
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| 519 | * @inheritdoc |
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| 520 | */ |
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| 521 | 1 | public function getRegenerateIdCallable(): callable |
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| 525 | |||
| 526 | /** |
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| 527 | * @inheritdoc |
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| 528 | */ |
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| 529 | 3 | public function setRegenerateIdCallable(callable $callable): SessionFunctionsInterface |
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| 535 | |||
| 536 | /** |
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| 537 | * @inheritdoc |
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| 538 | */ |
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| 539 | 1 | public function getRegisterShutdownCallable(): callable |
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| 543 | |||
| 544 | /** |
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| 545 | * @inheritdoc |
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| 546 | */ |
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| 547 | 3 | public function setRegisterShutdownCallable(callable $callable): SessionFunctionsInterface |
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| 553 | |||
| 554 | /** |
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| 555 | * @inheritdoc |
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| 556 | */ |
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| 557 | 1 | public function getResetCallable(): callable |
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| 561 | |||
| 562 | /** |
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| 563 | * @inheritdoc |
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| 564 | */ |
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| 565 | 3 | public function setResetCallable(callable $callable): SessionFunctionsInterface |
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| 571 | |||
| 572 | /** |
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| 573 | * @inheritdoc |
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| 574 | */ |
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| 575 | 1 | public function getSavePathCallable(): callable |
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| 579 | |||
| 580 | /** |
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| 581 | * @inheritdoc |
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| 582 | */ |
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| 583 | 3 | public function setSavePathCallable(callable $callable): SessionFunctionsInterface |
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| 589 | |||
| 590 | /** |
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| 591 | * @inheritdoc |
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| 592 | */ |
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| 593 | 1 | public function getSetCookieParamsCallable(): callable |
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| 597 | |||
| 598 | /** |
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| 599 | * @inheritdoc |
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| 600 | */ |
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| 601 | 3 | public function setSetCookieParamsCallable(callable $callable): SessionFunctionsInterface |
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| 607 | |||
| 608 | /** |
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| 609 | * @inheritdoc |
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| 610 | */ |
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| 611 | 1 | public function getSetSaveHandlerCallable(): callable |
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| 615 | |||
| 616 | /** |
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| 617 | * @inheritdoc |
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| 618 | */ |
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| 619 | 3 | public function setSetSaveHandlerCallable(callable $callable): SessionFunctionsInterface |
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| 625 | |||
| 626 | /** |
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| 627 | * @inheritdoc |
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| 628 | */ |
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| 629 | 2 | public function getStartCallable(): callable |
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| 633 | |||
| 634 | /** |
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| 635 | * @inheritdoc |
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| 636 | */ |
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| 637 | 3 | public function setStartCallable(callable $callable): SessionFunctionsInterface |
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| 643 | |||
| 644 | /** |
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| 645 | * @inheritdoc |
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| 646 | */ |
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| 647 | 1 | public function getStatusCallable(): callable |
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| 651 | |||
| 652 | /** |
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| 653 | * @inheritdoc |
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| 654 | */ |
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| 655 | 3 | public function setStatusCallable(callable $callable): SessionFunctionsInterface |
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| 661 | |||
| 662 | /** |
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| 663 | * @inheritdoc |
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| 664 | */ |
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| 665 | 1 | public function getUnsetCallable(): callable |
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| 669 | |||
| 670 | /** |
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| 671 | * @inheritdoc |
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| 672 | */ |
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| 673 | 3 | public function setUnsetCallable(callable $callable): SessionFunctionsInterface |
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| 679 | |||
| 680 | /** |
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| 681 | * @inheritdoc |
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| 682 | */ |
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| 683 | 2 | public function getWriteCloseCallable(): callable |
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| 687 | |||
| 688 | /** |
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| 689 | * @inheritdoc |
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| 690 | */ |
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| 691 | 3 | public function setWriteCloseCallable(callable $callable): SessionFunctionsInterface |
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| 697 | } |
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| 698 |