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:
| 1 | <?php | ||
| 21 | class ImportService | ||
| 22 | { | ||
| 23 | /** | ||
| 24 | * Imports Elasticsearch index data. | ||
| 25 | * | ||
| 26 | * @param Manager $manager | ||
| 27 | * @param string $filename | ||
| 28 | * @param OutputInterface $output | ||
| 29 | * @param array $options | ||
| 30 | */ | ||
| 31 | public function importIndex( | ||
| 32 | Manager $manager, | ||
| 33 | $filename, | ||
| 34 | OutputInterface $output, | ||
| 35 | $options | ||
| 36 |     ) { | ||
| 37 | $reader = $this->getReader($manager, $this->getFilePath($filename), $options); | ||
| 38 | |||
| 39 | $progress = new ProgressBar($output, $reader->count()); | ||
| 40 | $progress->setRedrawFrequency(100); | ||
| 41 | $progress->start(); | ||
| 42 | |||
| 43 | $bulkSize = $options['bulk-size']; | ||
| 44 |         foreach ($reader as $key => $document) { | ||
| 45 | $data = $document['_source']; | ||
| 46 | $data['_id'] = $document['_id']; | ||
| 47 | |||
| 48 |             if (array_key_exists('fields', $document)) { | ||
| 49 | $data = array_merge($document['fields'], $data); | ||
| 50 | } | ||
| 51 | |||
| 52 |             $manager->bulk('index', $document['_type'], $data); | ||
|  | |||
| 53 | |||
| 54 |             if (($key + 1) % $bulkSize == 0) { | ||
| 55 | $manager->commit(); | ||
| 56 | } | ||
| 57 | |||
| 58 | $progress->advance(); | ||
| 59 | } | ||
| 60 | |||
| 61 | $manager->commit(); | ||
| 62 | |||
| 63 | $progress->finish(); | ||
| 64 |         $output->writeln(''); | ||
| 65 | } | ||
| 66 | |||
| 67 | /** | ||
| 68 | * Returns a real file path. | ||
| 69 | * | ||
| 70 | * @param string $filename | ||
| 71 | * | ||
| 72 | * @return string | ||
| 73 | */ | ||
| 74 | View Code Duplication | protected function getFilePath($filename) | |
| 75 |     { | ||
| 76 |         if ($filename{0} == '/' || strstr($filename, ':') !== false) { | ||
| 77 | return $filename; | ||
| 78 | } | ||
| 79 | |||
| 80 | return realpath(getcwd() . '/' . $filename); | ||
| 81 | } | ||
| 82 | |||
| 83 | /** | ||
| 84 | * Prepares JSON reader. | ||
| 85 | * | ||
| 86 | * @param Manager $manager | ||
| 87 | * @param string $filename | ||
| 88 | * @param array $options | ||
| 89 | * | ||
| 90 | * @return JsonReader | ||
| 91 | */ | ||
| 92 | protected function getReader($manager, $filename, $options) | ||
| 96 | } | ||
| 97 | 
If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
If this a common case that PHP Analyzer should handle natively, please let us know by opening an issue.