Complex classes like Config 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 Config, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 24 | class Config implements ConfigInterface, NamespaceAwareInterface  | 
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| 25 | { | 
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| 26 | use NamespaceAwareTrait;  | 
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| 27 | |||
| 28 | /**  | 
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| 29 | * The value that identifies a version order by creation time.  | 
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| 30 | */  | 
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| 31 | public const VERSION_ORDER_CREATION_TIME = 'creation';  | 
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| 32 | |||
| 33 | /**  | 
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| 34 | * The value that identifies a version order by execution time.  | 
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| 35 | */  | 
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| 36 | public const VERSION_ORDER_EXECUTION_TIME = 'execution';  | 
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| 37 | |||
| 38 | /**  | 
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| 39 | * @var array  | 
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| 40 | */  | 
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| 41 | protected $values = [];  | 
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| 42 | |||
| 43 | /**  | 
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| 44 | * @var string  | 
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| 45 | */  | 
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| 46 | protected $configFilePath;  | 
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| 47 | |||
| 48 | /**  | 
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| 49 | * @inheritDoc  | 
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| 50 | */  | 
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| 51 | public function __construct(array $configArray, $configFilePath = null)  | 
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| 56 | |||
| 57 | /**  | 
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| 58 | * Create a new instance of the config class using a Yaml file path.  | 
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| 59 | *  | 
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| 60 | * @param string $configFilePath Path to the Yaml File  | 
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| 61 | *  | 
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| 62 | * @throws \RuntimeException  | 
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| 63 | *  | 
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| 64 | * @return \Phinx\Config\Config  | 
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| 65 | */  | 
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| 66 | 448 | public static function fromYaml($configFilePath)  | 
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| 86 | 1 | ||
| 87 | /**  | 
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| 88 | 1 | * Create a new instance of the config class using a JSON file path.  | 
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| 89 | *  | 
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| 90 | 1 | * @param string $configFilePath Path to the JSON File  | 
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| 91 | *  | 
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| 92 | * @throws \RuntimeException  | 
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| 93 | *  | 
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| 94 | * @return \Phinx\Config\Config  | 
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| 95 | */  | 
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| 96 | public static function fromJson($configFilePath)  | 
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| 114 | |||
| 115 | /**  | 
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| 116 | * Create a new instance of the config class using a PHP file path.  | 
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| 117 | *  | 
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| 118 | * @param string $configFilePath Path to the PHP File  | 
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| 119 | 3 | *  | 
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| 120 | * @throws \RuntimeException  | 
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| 121 | 3 | *  | 
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| 122 | * @return \Phinx\Config\Config  | 
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| 123 | 3 | */  | 
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| 124 | public static function fromPhp($configFilePath)  | 
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| 142 | |||
| 143 | 25 | /**  | 
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| 144 | 24 | * @inheritDoc  | 
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| 145 | 24 | */  | 
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| 146 | 24 | public function getEnvironments()  | 
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| 161 | |||
| 162 | 25 | /**  | 
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| 163 | * @inheritDoc  | 
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| 164 | 25 | */  | 
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| 165 | 21 | public function getEnvironment($name)  | 
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| 188 | |||
| 189 | /**  | 
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| 190 | 20 | * @inheritDoc  | 
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| 191 | 20 | */  | 
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| 192 | 2 | public function hasEnvironment($name)  | 
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| 196 | 1 | ||
| 197 | 1 | /**  | 
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| 198 | * @inheritDoc  | 
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| 199 | 1 | */  | 
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| 200 | public function getDefaultEnvironment()  | 
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| 242 | |||
| 243 | 423 | /**  | 
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| 244 | * @inheritDoc  | 
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| 245 | 423 | */  | 
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| 246 | 1 | public function getAlias($alias)  | 
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| 250 | 219 | ||
| 251 | 219 | /**  | 
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| 252 | * @inheritDoc  | 
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| 253 | 422 | */  | 
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| 254 | public function getAliases()  | 
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| 258 | |||
| 259 | /**  | 
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| 260 | * @inheritDoc  | 
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| 261 | */  | 
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| 262 | 14 | public function getConfigFilePath()  | 
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| 266 | 14 | ||
| 267 | /**  | 
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| 268 | * @inheritDoc  | 
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| 269 | *  | 
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| 270 | * @throws \UnexpectedValueException  | 
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| 271 | */  | 
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| 272 | 48 | public function getMigrationPaths()  | 
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| 273 |     { | 
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| 274 | 48 |         if (!isset($this->values['paths']['migrations'])) { | 
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| 275 | 28 |             throw new UnexpectedValueException('Migrations path missing from config file'); | 
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| 276 | }  | 
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| 277 | |||
| 278 | 20 |         if (is_string($this->values['paths']['migrations'])) { | 
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| 279 | 13 | $this->values['paths']['migrations'] = [$this->values['paths']['migrations']];  | 
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| 280 | 13 | }  | 
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| 281 | |||
| 282 | 20 | return $this->values['paths']['migrations'];  | 
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| 283 | }  | 
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| 284 | |||
| 285 | /**  | 
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| 286 | * Gets the base class name for migrations.  | 
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| 287 | *  | 
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| 288 | * @param bool $dropNamespace Return the base migration class name without the namespace.  | 
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| 289 | *  | 
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| 290 | 14 | * @return string  | 
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| 291 | */  | 
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| 292 | 14 | public function getMigrationBaseClassName($dropNamespace = true)  | 
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| 298 | |||
| 299 | /**  | 
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| 300 | * @inheritDoc  | 
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| 301 | *  | 
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| 302 | * @throws \UnexpectedValueException  | 
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| 303 | */  | 
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| 304 | 14 | public function getSeedPaths()  | 
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| 305 |     { | 
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| 306 | 14 |         if (!isset($this->values['paths']['seeds'])) { | 
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| 307 | 10 |             throw new UnexpectedValueException('Seeds path missing from config file'); | 
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| 308 | }  | 
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| 309 | |||
| 310 | 4 |         if (is_string($this->values['paths']['seeds'])) { | 
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| 311 | $this->values['paths']['seeds'] = [$this->values['paths']['seeds']];  | 
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| 312 | }  | 
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| 313 | |||
| 314 | return $this->values['paths']['seeds'];  | 
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| 315 | }  | 
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| 316 | |||
| 317 | /**  | 
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| 318 | 384 | * Gets the base class name for seeders.  | 
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| 319 | *  | 
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| 320 | 384 | * @param bool $dropNamespace Return the base seeder class name without the namespace.  | 
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| 321 | 162 | * @return string  | 
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| 322 | */  | 
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| 323 | public function getSeedBaseClassName($dropNamespace = true)  | 
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| 329 | |||
| 330 | /**  | 
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| 331 | * Get the template file name.  | 
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| 332 | 357 | *  | 
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| 333 | * @return string|false  | 
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| 334 | 357 | */  | 
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| 335 | public function getTemplateFile()  | 
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| 343 | |||
| 344 | /**  | 
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| 345 | * Get the template class name.  | 
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| 346 | *  | 
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| 347 | 448 | * @return string|false  | 
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| 348 | */  | 
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| 349 | public function getTemplateClass()  | 
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| 357 | |||
| 358 | /**  | 
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| 359 | 448 |      * {@inheritdoc} | 
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| 360 | 448 | */  | 
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| 361 | public function getDataDomain()  | 
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| 369 | |||
| 370 | /**  | 
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| 371 | * @inheritDoc  | 
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| 372 | */  | 
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| 373 | 448 | public function getContainer()  | 
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| 381 | 446 | ||
| 382 | 446 | /**  | 
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| 383 | 446 | * Get the version order.  | 
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| 384 | 446 | *  | 
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| 385 | 446 | * @return string  | 
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| 386 | 446 | */  | 
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| 387 | public function getVersionOrder()  | 
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| 388 | 43 |     { | 
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| 389 | 448 |         if (!isset($this->values['version_order'])) { | 
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| 390 | 448 | return self::VERSION_ORDER_CREATION_TIME;  | 
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| 391 | }  | 
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| 392 | |||
| 393 | return $this->values['version_order'];  | 
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| 394 | }  | 
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| 395 | |||
| 396 | 213 | /**  | 
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| 397 | * Is version order creation time?  | 
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| 398 | 213 | *  | 
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| 399 | 213 | * @return bool  | 
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| 400 | */  | 
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| 401 | public function isVersionOrderCreationTime()  | 
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| 402 |     { | 
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| 403 | $versionOrder = $this->getVersionOrder();  | 
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| 404 | 2 | ||
| 405 | return $versionOrder == self::VERSION_ORDER_CREATION_TIME;  | 
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| 406 | 2 | }  | 
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| 407 | 1 | ||
| 408 | /**  | 
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| 409 | * Get the bootstrap file path  | 
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| 410 | 1 | *  | 
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| 411 | * @return string|false  | 
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| 412 | */  | 
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| 413 | public function getBootstrapFile()  | 
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| 421 | |||
| 422 | /**  | 
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| 423 | * Replace tokens in the specified array.  | 
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| 424 | 1 | *  | 
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| 425 | * @param array $arr Array to replace  | 
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| 426 | 1 | *  | 
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| 427 | 1 | * @return array  | 
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| 428 | */  | 
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| 429 | protected function replaceTokens(array $arr)  | 
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| 449 | |||
| 450 | /**  | 
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| 451 | * Recurse an array for the specified tokens and replace them.  | 
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| 452 | *  | 
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| 453 | * @param array $arr Array to recurse  | 
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| 454 | * @param string[] $tokens Array of tokens to search for  | 
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| 455 | *  | 
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| 456 | * @return array  | 
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| 457 | */  | 
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| 458 | protected function recurseArrayForTokens($arr, $tokens)  | 
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| 478 | |||
| 479 | /**  | 
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| 480 | * Parse a database-agnostic DSN into individual options.  | 
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| 481 | *  | 
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| 482 | * @param array $options Options  | 
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| 483 | *  | 
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| 484 | * @return array  | 
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| 485 | */  | 
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| 486 | protected function parseAgnosticDsn(array $options)  | 
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| 497 | |||
| 498 | /**  | 
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| 499 | * @inheritDoc  | 
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| 500 | */  | 
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| 501 | public function offsetSet($id, $value)  | 
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| 505 | |||
| 506 | /**  | 
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| 507 | * @inheritDoc  | 
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| 508 | *  | 
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| 509 | * @throws \InvalidArgumentException  | 
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| 510 | */  | 
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| 511 | public function offsetGet($id)  | 
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| 519 | |||
| 520 | /**  | 
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| 521 | * @inheritDoc  | 
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| 522 | */  | 
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| 523 | public function offsetExists($id)  | 
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| 527 | |||
| 528 | /**  | 
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| 529 | * @inheritDoc  | 
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| 530 | */  | 
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| 531 | public function offsetUnset($id)  | 
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| 535 | }  | 
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| 536 | 
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.