| Conditions | 11 | 
| Paths | 18 | 
| Total Lines | 49 | 
| Code Lines | 26 | 
| Lines | 0 | 
| Ratio | 0 % | 
| Changes | 0 | ||
Small methods make your code easier to understand, in particular if combined with a good name. Besides, if your method is small, finding a good name is usually much easier.
For example, if you find yourself adding comments to a method's body, this is usually a good sign to extract the commented part to a new method, and use the comment as a starting point when coming up with a good name for this new method.
Commonly applied refactorings include:
If many parameters/temporary variables are present:
| 1 | <?php  | 
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| 20 | public function onFlush(OnFlushEventArgs $args)  | 
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| 21 |     { | 
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| 22 | $em = $args->getEntityManager();  | 
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| 23 | $uow = $em->getUnitOfWork();  | 
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| 24 | |||
| 25 |         foreach ($uow->getScheduledEntityUpdates() as $entity) { | 
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| 26 |             if (!$entity instanceof Ticket) { | 
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| 27 | return;  | 
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| 28 | }  | 
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| 29 | |||
| 30 |             if (!key_exists('status', $uow->getEntityChangeSet($entity))) { | 
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| 31 | return;  | 
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| 32 | }  | 
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| 33 | |||
| 34 | $ticket = $entity;  | 
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| 35 | }  | 
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| 36 | |||
| 37 | $oldStatus = $uow->getEntityChangeSet($ticket)['status'][0];  | 
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                         | 
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| 38 | $newStatus = $uow->getEntityChangeSet($ticket)['status'][1];  | 
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| 39 | |||
| 40 |         if (!in_array($newStatus, Ticket::getStatuses())) { | 
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| 41 |             throw new \InvalidArgumentException("Invalid ticket status"); | 
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| 42 | }  | 
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| 43 | |||
| 44 |         if ($oldStatus === Ticket::STATUS_PAID) { | 
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| 45 |             throw new TicketStatusConflictException("Invalid status. Ticket already paid."); | 
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| 46 | }  | 
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| 47 | |||
| 48 | $user = $this->tokenStorage->getToken()->getUser();  | 
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| 49 | |||
| 50 | /** @var CustomerOrder $order */  | 
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| 51 |         $order = $em->getRepository('AppBundle:CustomerOrder')->findOpenedCustomerOrder($user); | 
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| 52 | |||
| 53 | /**  | 
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| 54 | * Creating order if isn't exist  | 
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| 55 | */  | 
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| 56 |         if (!$order) { | 
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| 57 | $order = new CustomerOrder($user);  | 
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| 58 | $ticketMetadata = $em->getClassMetadata(CustomerOrder::class);  | 
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| 59 | $em->persist($order);  | 
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| 60 | $uow->computeChangeSet($ticketMetadata, $order);  | 
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| 61 | }  | 
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| 62 | |||
| 63 |         if ($oldStatus === Ticket::STATUS_FREE && $newStatus === Ticket::STATUS_BOOKED) { | 
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| 64 | $ticket->setCustomerOrder($order);  | 
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| 65 |         } elseif ($oldStatus === Ticket::STATUS_BOOKED && $newStatus === Ticket::STATUS_FREE) { | 
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| 66 | $ticket->setCustomerOrder(null);  | 
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| 67 | }  | 
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| 68 | }  | 
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| 69 | }  | 
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| 70 | 
If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: