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 | ||
| 16 | class SurveyController extends Controller | ||
| 17 | { | ||
| 18 | /** | ||
| 19 |      * @Route("/surveys", name="surveys") | ||
| 20 |      * @Template("@App/surveys.html.twig") | ||
| 21 | * | ||
| 22 | * @return array | ||
| 23 | */ | ||
| 24 | 2 | public function surveysAction(Request $request) | |
| 25 |     { | ||
| 26 | 2 | $em = $this->getDoctrine()->getManager(); | |
| 27 | |||
| 28 | 2 | $filter = new Filter(); | |
| 29 | 2 | $filterForm = $this->createForm(SurveyFilterType::class, $filter); | |
| 30 | 2 | $filterForm->handleRequest($request); | |
| 31 | |||
| 32 | 2 | $surveys = $em->getRepository(Survey::class)->selectSurveysByParams($filter); | |
| 33 | 2 | $types = $em->getRepository(SurveyType::class)->selectSurveyTypesByParams($filter); | |
| 34 | |||
| 35 | return [ | ||
| 36 | 2 |             'surveys' => $this->get('knp_paginator') | |
| 37 | 2 | ->paginate( | |
| 38 | $surveys, | ||
| 39 | 2 |                     $request->query->getInt('page', 1), | |
| 40 | 2 | 20 | |
| 41 | ), | ||
| 42 | 2 | 'types' => $types, | |
| 43 | 2 | 'filterForm' => $filterForm->createView(), | |
| 44 | ]; | ||
| 45 | } | ||
| 46 | |||
| 47 | /** | ||
| 48 | * @param Survey $survey | ||
| 49 |      * @Route("/surveys/{id}", name="survey") | ||
| 50 |      * @Template("@App/survey.html.twig") | ||
| 51 |      * @ParamConverter("survey", class="AppBundle\Entity\Survey\Survey") | ||
| 52 | * | ||
| 53 | * @return array | ||
| 54 | */ | ||
| 55 | 1 | public function surveyAction(Survey $survey) | |
| 79 | |||
| 80 | /** | ||
| 81 | * @param Request $request, SurveyType $surveyType | ||
| 82 |      * @Route("/surveys/create/{survey_type}", name="survey_create") | ||
| 83 |      * @ParamConverter("surveyType", options={"mapping": {"survey_type": "name"}}) | ||
| 84 | */ | ||
| 85 | 1 | public function surveyCreateAction(Request $request, SurveyType $surveyType) | |
| 104 | |||
| 105 | /** | ||
| 106 | * @param Request $request, Survey $survey | ||
| 107 |      * @Route("/surveys/delete/{id}", requirements={"id": "\d+"}, name="survey_delete") | ||
| 108 |      * @ParamConverter("survey", class="AppBundle\Entity\Survey\Survey") | ||
| 109 | */ | ||
| 110 | 1 | public function surveyDeleteAction(Request $request, Survey $survey) | |
| 139 | } | ||
| 140 | 
When comparing two booleans, it is generally considered safer to use the strict comparison operator.