Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
Complex classes like Manager 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 Manager, and based on these observations, apply Extract Interface, too.
| 1 | <?php  | 
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| 40 | class Manager  | 
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| 41 | { | 
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| 42 | /**  | 
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| 43 | * @var \Phinx\Config\ConfigInterface  | 
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| 44 | */  | 
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| 45 | protected $config;  | 
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| 46 | |||
| 47 | /**  | 
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| 48 | * @var \Symfony\Component\Console\Input\InputInterface  | 
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| 49 | */  | 
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| 50 | protected $input;  | 
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| 51 | |||
| 52 | /**  | 
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| 53 | * @var \Symfony\Component\Console\Output\OutputInterface  | 
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| 54 | */  | 
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| 55 | protected $output;  | 
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| 56 | |||
| 57 | /**  | 
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| 58 | * @var array  | 
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| 59 | */  | 
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| 60 | protected $environments;  | 
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| 61 | |||
| 62 | /**  | 
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| 63 | * @var array  | 
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| 64 | */  | 
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| 65 | protected $migrations;  | 
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| 66 | |||
| 67 | /**  | 
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| 68 | * @var array  | 
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| 69 | */  | 
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| 70 | protected $seeds;  | 
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| 71 | |||
| 72 | /**  | 
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| 73 | * @var integer  | 
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| 74 | */  | 
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| 75 | const EXIT_STATUS_DOWN = 1;  | 
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| 76 | |||
| 77 | /**  | 
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| 78 | * @var integer  | 
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| 79 | */  | 
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| 80 | const EXIT_STATUS_MISSING = 2;  | 
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| 81 | |||
| 82 | /**  | 
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| 83 | * Class Constructor.  | 
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| 84 | *  | 
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| 85 | * @param \Phinx\Config\ConfigInterface $config Configuration Object  | 
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| 86 | * @param \Symfony\Component\Console\Input\InputInterface $input Console Input  | 
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| 87 | * @param \Symfony\Component\Console\Output\OutputInterface $output Console Output  | 
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| 88 | */  | 
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| 89 | 432 | public function __construct(ConfigInterface $config, InputInterface $input, OutputInterface $output)  | 
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| 95 | |||
| 96 | /**  | 
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| 97 | * Prints the specified environment's migration status.  | 
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| 98 | *  | 
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| 99 | * @param string $environment  | 
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| 100 | * @param null $format  | 
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| 101 | * @return int 0 if all migrations are up, or an error code  | 
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| 102 | */  | 
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| 103 | 22 | public function printStatus($environment, $format = null)  | 
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| 250 | |||
| 251 | /**  | 
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| 252 | * Print Missing Version  | 
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| 253 | *  | 
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| 254 | * @param array $version The missing version to print (in the format returned by Environment.getVersionLog).  | 
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| 255 | * @param int $maxNameLength The maximum migration name length.  | 
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| 256 | */  | 
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| 257 | 10 | private function printMissingVersion($version, $maxNameLength)  | 
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| 258 |     { | 
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| 259 | 10 | $this->getOutput()->writeln(sprintf(  | 
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| 260 | 10 | ' <error>up</error> %14.0f %19s %19s <comment>%s</comment> <error>** MISSING **</error>',  | 
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| 261 | 10 | $version['version'],  | 
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| 262 | 10 | $version['start_time'],  | 
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| 263 | 10 | $version['end_time'],  | 
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| 264 | 10 | str_pad($version['migration_name'], $maxNameLength, ' ')  | 
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| 265 | 10 | ));  | 
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| 266 | |||
| 267 | 10 |         if ($version && $version['breakpoint']) { | 
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| 268 | 1 |             $this->getOutput()->writeln('         <error>BREAKPOINT SET</error>'); | 
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| 269 | 1 | }  | 
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| 270 | 10 | }  | 
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| 271 | |||
| 272 | /**  | 
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| 273 | * Migrate to the version of the database on a given date.  | 
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| 274 | *  | 
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| 275 | * @param string $environment Environment  | 
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| 276 | * @param \DateTime $dateTime Date to migrate to  | 
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| 277 | *  | 
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| 278 | * @return void  | 
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| 279 | */  | 
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| 280 | 4 | public function migrateToDateTime($environment, \DateTime $dateTime)  | 
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| 295 | |||
| 296 | /**  | 
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| 297 | * Migrate an environment to the specified version.  | 
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| 298 | *  | 
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| 299 | * @param string $environment Environment  | 
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| 300 | * @param int $version  | 
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| 301 | * @return void  | 
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| 302 | */  | 
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| 303 | 8 | public function migrate($environment, $version = null)  | 
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| 355 | |||
| 356 | /**  | 
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| 357 | * Execute a migration against the specified environment.  | 
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| 358 | *  | 
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| 359 | * @param string $name Environment Name  | 
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| 360 | * @param \Phinx\Migration\MigrationInterface $migration Migration  | 
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| 361 | * @param string $direction Direction  | 
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| 362 | * @return void  | 
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| 363 | 119 | */  | 
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| 364 | public function executeMigration($name, MigrationInterface $migration, $direction = MigrationInterface::UP)  | 
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| 385 | |||
| 386 | /**  | 
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| 387 | * Execute a seeder against the specified environment.  | 
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| 388 | *  | 
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| 389 | * @param string $name Environment Name  | 
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| 390 | * @param \Phinx\Seed\SeedInterface $seed Seed  | 
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| 391 | * @return void  | 
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| 392 | 6 | */  | 
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| 393 | public function executeSeed($name, SeedInterface $seed)  | 
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| 414 | |||
| 415 | /**  | 
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| 416 | * Rollback an environment to the specified version.  | 
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| 417 | *  | 
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| 418 | * @param string $environment Environment  | 
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| 419 | * @param int|string $target  | 
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| 420 | * @param bool $force  | 
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| 421 | * @param bool $targetMustMatchVersion  | 
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| 422 | * @return void  | 
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| 423 | 349 | */  | 
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| 424 | public function rollback($environment, $target = null, $force = false, $targetMustMatchVersion = true)  | 
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| 524 | |||
| 525 | /**  | 
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| 526 | * Run database seeders against an environment.  | 
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| 527 | *  | 
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| 528 | 9 | * @param string $environment Environment  | 
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| 529 | * @param string $seed Seeder  | 
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| 530 | 9 | * @return void  | 
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| 531 | */  | 
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| 532 | 9 | public function seed($environment, $seed = null)  | 
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| 552 | |||
| 553 | /**  | 
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| 554 | * Sets the environments.  | 
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| 555 | 381 | *  | 
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| 556 | * @param array $environments Environments  | 
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| 557 | 381 | * @return \Phinx\Migration\Manager  | 
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| 558 | 381 | */  | 
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| 559 | public function setEnvironments($environments = [])  | 
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| 565 | |||
| 566 | /**  | 
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| 567 | * Gets the manager class for the given environment.  | 
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| 568 | 382 | *  | 
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| 569 | * @param string $name Environment Name  | 
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| 570 | 382 | * @throws \InvalidArgumentException  | 
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| 571 | 380 | * @return \Phinx\Migration\Manager\Environment  | 
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| 572 | */  | 
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| 573 | public function getEnvironment($name)  | 
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| 598 | |||
| 599 | /**  | 
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| 600 | 400 | * Sets the console input.  | 
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| 601 | *  | 
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| 602 | 400 | * @param \Symfony\Component\Console\Input\InputInterface $input Input  | 
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| 603 | 400 | * @return \Phinx\Migration\Manager  | 
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| 604 | */  | 
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| 605 | public function setInput(InputInterface $input)  | 
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| 606 |     { | 
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| 607 | $this->input = $input;  | 
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| 608 | |||
| 609 | return $this;  | 
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| 610 | }  | 
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| 611 | 393 | ||
| 612 | /**  | 
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| 613 | 393 | * Gets the console input.  | 
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| 614 | *  | 
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| 615 | * @return \Symfony\Component\Console\Input\InputInterface  | 
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| 616 | */  | 
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| 617 | public function getInput()  | 
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| 618 |     { | 
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| 619 | return $this->input;  | 
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| 620 | }  | 
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| 621 | |||
| 622 | 400 | /**  | 
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| 623 | * Sets the console output.  | 
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| 624 | 400 | *  | 
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| 625 | 400 | * @param \Symfony\Component\Console\Output\OutputInterface $output Output  | 
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| 626 | * @return \Phinx\Migration\Manager  | 
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| 627 | */  | 
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| 628 | public function setOutput(OutputInterface $output)  | 
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| 634 | |||
| 635 | 395 | /**  | 
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| 636 | * Gets the console output.  | 
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| 637 | *  | 
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| 638 | * @return \Symfony\Component\Console\Output\OutputInterface  | 
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| 639 | */  | 
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| 640 | public function getOutput()  | 
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| 644 | 379 | ||
| 645 | /**  | 
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| 646 | 379 | * Sets the database migrations.  | 
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| 647 | 379 | *  | 
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| 648 | * @param array $migrations Migrations  | 
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| 649 | * @return \Phinx\Migration\Manager  | 
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| 650 | */  | 
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| 651 | public function setMigrations(array $migrations)  | 
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| 657 | 388 | ||
| 658 | /**  | 
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| 659 | 388 | * Gets an array of the database migrations, indexed by migration name (aka creation time) and sorted in ascending  | 
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| 660 | 388 | * order  | 
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| 661 | *  | 
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| 662 | * @throws \InvalidArgumentException  | 
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| 663 | 388 | * @return \Phinx\Migration\AbstractMigration[]  | 
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| 664 | */  | 
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| 665 | 388 | public function getMigrations()  | 
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| 731 | 388 | ||
| 732 | 388 | /**  | 
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| 733 | 388 | * Returns a list of migration files found in the provided migration paths.  | 
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| 734 | *  | 
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| 735 | 388 | * @return string[]  | 
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| 736 | 388 | */  | 
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| 737 | 388 | View Code Duplication | protected function getMigrationFiles()  | 
            
| 738 | 388 |     { | 
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| 739 | 388 | $config = $this->getConfig();  | 
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| 740 | 388 | $paths = $config->getMigrationPaths();  | 
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| 741 | $files = [];  | 
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| 742 | 388 | ||
| 743 |         foreach ($paths as $path) { | 
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| 744 | $files = array_merge(  | 
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| 745 | $files,  | 
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| 746 | Util::glob($path . DIRECTORY_SEPARATOR . '*.php')  | 
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| 747 | );  | 
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| 748 | }  | 
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| 749 | // glob() can return the same file multiple times  | 
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| 750 | // This will cause the migration to fail with a  | 
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| 751 | 11 | // false assumption of duplicate migrations  | 
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| 752 | // http://php.net/manual/en/function.glob.php#110340  | 
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| 753 | 11 | $files = array_unique($files);  | 
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| 754 | 11 | ||
| 755 | return $files;  | 
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| 756 | }  | 
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| 757 | |||
| 758 | /**  | 
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| 759 | * Sets the database seeders.  | 
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| 760 | *  | 
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| 761 | * @param array $seeds Seeders  | 
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| 762 | * @return \Phinx\Migration\Manager  | 
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| 763 | 11 | */  | 
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| 764 | public function setSeeds(array $seeds)  | 
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| 770 | |||
| 771 | 11 | /**  | 
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| 772 | * Get seed dependencies instances from seed dependency array  | 
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| 773 | 11 | *  | 
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| 774 | 11 | * @param AbstractSeed $seed Seed  | 
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| 775 | 11 | *  | 
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| 776 | 11 | * @return AbstractSeed[]  | 
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| 777 | */  | 
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| 778 | protected function getSeedDependenciesInstances(AbstractSeed $seed)  | 
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| 798 | |||
| 799 | /**  | 
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| 800 | * Order seeds by dependencies  | 
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| 801 | *  | 
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| 802 | * @param AbstractSeed[] $seeds Seeds  | 
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| 803 | *  | 
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| 804 | 11 | * @return AbstractSeed[]  | 
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| 805 | 11 | */  | 
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| 806 | 11 | protected function orderSeedsByDependencies(array $seeds)  | 
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| 822 | 11 | ||
| 823 | 11 | /**  | 
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| 824 | 11 | * Gets an array of database seeders.  | 
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| 825 | *  | 
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| 826 | 11 | * @throws \InvalidArgumentException  | 
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| 827 | 11 | * @return \Phinx\Seed\AbstractSeed[]  | 
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| 828 | 11 | */  | 
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| 829 | 11 | public function getSeeds()  | 
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| 881 | 2 | ||
| 882 | 1 | /**  | 
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| 883 | 1 | * Returns a list of seed files found in the provided seed paths.  | 
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| 884 | *  | 
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| 885 | 1 | * @return string[]  | 
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| 886 | 1 | */  | 
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| 887 | View Code Duplication | protected function getSeedFiles()  | 
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| 888 |     { | 
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| 889 | 1 | $config = $this->getConfig();  | 
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| 890 | $paths = $config->getSeedPaths();  | 
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| 891 | 1 | $files = [];  | 
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| 892 | |||
| 893 | 1 |         foreach ($paths as $path) { | 
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| 894 | 1 | $files = array_merge(  | 
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| 895 | 1 | $files,  | 
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| 896 | 1 | Util::glob($path . DIRECTORY_SEPARATOR . '*.php')  | 
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| 897 | 1 | );  | 
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| 898 | 1 | }  | 
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| 899 | // glob() can return the same file multiple times  | 
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| 900 | // This will cause the migration to fail with a  | 
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| 901 | // false assumption of duplicate migrations  | 
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| 902 | // http://php.net/manual/en/function.glob.php#110340  | 
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| 903 | $files = array_unique($files);  | 
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| 904 | |||
| 905 | return $files;  | 
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| 906 | 1 | }  | 
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| 907 | |||
| 908 | 1 | /**  | 
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| 909 | 1 | * Sets the config.  | 
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| 910 | 1 | *  | 
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| 911 | 1 | * @param \Phinx\Config\ConfigInterface $config Configuration Object  | 
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| 912 | 1 | * @return \Phinx\Migration\Manager  | 
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| 913 | */  | 
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| 914 | public function setConfig(ConfigInterface $config)  | 
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| 920 | |||
| 921 | /**  | 
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| 922 | * Gets the config.  | 
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| 923 | *  | 
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| 924 | * @return \Phinx\Config\ConfigInterface  | 
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| 925 | */  | 
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| 926 | public function getConfig()  | 
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| 930 | |||
| 931 | /**  | 
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| 932 | * Toggles the breakpoint for a specific version.  | 
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| 933 | *  | 
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| 934 | * @param string $environment  | 
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| 935 | * @param int $version  | 
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| 936 | * @return void  | 
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| 937 | */  | 
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| 938 | public function toggleBreakpoint($environment, $version)  | 
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| 939 |     { | 
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| 940 | $migrations = $this->getMigrations();  | 
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| 941 | $this->getMigrations();  | 
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| 942 | $env = $this->getEnvironment($environment);  | 
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| 943 | $versions = $env->getVersionLog();  | 
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| 944 | |||
| 945 |         if (empty($versions) || empty($migrations)) { | 
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| 946 | return;  | 
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| 947 | }  | 
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| 948 | |||
| 949 |         if ($version === null) { | 
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| 950 | $lastVersion = end($versions);  | 
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| 951 | $version = $lastVersion['version'];  | 
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| 952 | }  | 
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| 953 | |||
| 954 | View Code Duplication |         if (0 != $version && !isset($migrations[$version])) { | 
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| 955 | $this->output->writeln(sprintf(  | 
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| 956 | '<comment>warning</comment> %s is not a valid version',  | 
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| 957 | $version  | 
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| 958 | ));  | 
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| 959 | |||
| 960 | return;  | 
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| 961 | }  | 
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| 962 | |||
| 963 | $env->getAdapter()->toggleBreakpoint($migrations[$version]);  | 
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| 964 | |||
| 965 | $versions = $env->getVersionLog();  | 
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| 966 | |||
| 967 | $this->getOutput()->writeln(  | 
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| 968 | ' Breakpoint ' . ($versions[$version]['breakpoint'] ? 'set' : 'cleared') .  | 
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| 969 | ' for <info>' . $version . '</info>' .  | 
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| 970 | ' <comment>' . $migrations[$version]->getName() . '</comment>'  | 
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| 971 | );  | 
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| 972 | }  | 
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| 973 | |||
| 974 | /**  | 
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| 975 | * Remove all breakpoints  | 
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| 976 | *  | 
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| 977 | * @param string $environment  | 
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| 978 | * @return void  | 
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| 979 | */  | 
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| 980 | public function removeBreakpoints($environment)  | 
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| 981 |     { | 
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| 982 | $this->getOutput()->writeln(sprintf(  | 
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| 983 | ' %d breakpoints cleared.',  | 
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| 984 | $this->getEnvironment($environment)->getAdapter()->resetAllBreakpoints()  | 
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| 985 | ));  | 
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| 986 | }  | 
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| 987 | }  | 
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| 988 | 
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.