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                <?php  | 
            
                            
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                namespace TonicHealthCheck\Incident;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\Common\EventSubscriber;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\ORM\Event\OnFlushEventArgs;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\ORM\Events;;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use Doctrine\ORM\UnitOfWork;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TonicHealthCheck\Incident\Siren\IncidentSiren;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TonicHealthCheck\Incident\Siren\IncidentSirenCollection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TonicHealthCheck\Incident\Siren\NotificationType\EmailNotificationType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TonicHealthCheck\Incident\Siren\NotificationType\FileNotificationType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TonicHealthCheck\Incident\Siren\NotificationType\NotificationTypeInterface;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TonicHealthCheck\Incident\Siren\NotificationType\PagerDutyNotificationType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use TonicHealthCheck\Incident\Siren\NotificationType\RequestNotificationType;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Class IncidentEventSubscriber.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class IncidentEventSubscriber implements EventSubscriber  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected static $typeEventPolitic = [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        IncidentInterface::TYPE_URGENT => [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            EmailNotificationType::class,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            FileNotificationType::class,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            RequestNotificationType::class,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            PagerDutyNotificationType::class,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        IncidentInterface::TYPE_WARNING => [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            EmailNotificationType::class,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            RequestNotificationType::class,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        IncidentInterface::TYPE_MINOR => [  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            EmailNotificationType::class,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            RequestNotificationType::class,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        ],  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    ];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @var IncidentSirenCollection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    private $incidentSirenCollection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * IncidentHandler constructor.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param IncidentSirenCollection $incidentSirenC  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function __construct($incidentSirenC)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->setIncidentSirenCollection($incidentSirenC);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getSubscribedEvents()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return array(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            Events::onFlush,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param OnFlushEventArgs $eventArgs  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function onFlush(OnFlushEventArgs $eventArgs)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $entityM = $eventArgs->getEntityManager();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $uow = $entityM->getUnitOfWork();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $updates = $uow->getScheduledEntityUpdates();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($updates as $entity) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            /** @var IncidentInterface $entity */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if ($entity instanceof IncidentInterface) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $this->preFlushIncident($uow, $entity);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return IncidentSirenCollection  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public function getIncidentSirenCollection()  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $this->incidentSirenCollection;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param IncidentSirenCollection $incidentSiren  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function setIncidentSirenCollection(IncidentSirenCollection $incidentSiren)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $this->incidentSirenCollection = $incidentSiren;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param IncidentInterface $entity  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function preUpdateIncidentStatus(IncidentInterface $entity)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        /** @var IncidentSiren $incidentI */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach ($this->getIncidentSirenCollection() as $incidentI) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (isset(static::$typeEventPolitic[$entity->getType()])  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                && $this->checkIsNotificationAllow($entity->getType(), $incidentI->getNotificationTypeI())  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $entity->attach($incidentI);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $entity->detach($incidentI);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $type  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param NotificationTypeInterface $notificationTypeI  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return bool  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    protected function checkIsNotificationAllow($type, NotificationTypeInterface $notificationTypeI)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $isNotificationAllow = false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach (static::$typeEventPolitic[$type] as $notificationType) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            if (is_a($notificationTypeI, $notificationType)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                $isNotificationAllow = true;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                break;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $isNotificationAllow;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param UnitOfWork $uow  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                     * @param IncidentInterface $entity  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                        
            
                                    
            
            
                | 
                    138
                 | 
                                    
                             1                          | 
                
                 | 
                    protected function preFlushIncident(UnitOfWork $uow, IncidentInterface $entity)  | 
            
            
                                                        
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                    { | 
            
            
                                                        
            
                                    
            
            
                | 
                    140
                 | 
                                    
                             1                          | 
                
                 | 
                        $changeSet = $uow->getEntityChangeSet($entity);  | 
            
            
                                                        
            
                                    
            
            
                | 
                    141
                 | 
                                    
                             1                          | 
                
                 | 
                        if (array_key_exists('status', $changeSet) || array_key_exists('type', $changeSet)) { | 
            
            
                                                        
            
                                    
            
            
                | 
                    142
                 | 
                                    
                             1                          | 
                
                 | 
                            $this->preUpdateIncidentStatus($entity);  | 
            
            
                                                        
            
                                    
            
            
                | 
                    143
                 | 
                                    
                             1                          | 
                
                 | 
                            $entity->notify();  | 
            
            
                                                        
            
                                    
            
            
                | 
                    144
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    145
                 | 
                                    
                             1                          | 
                
                 | 
                    }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    146
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    147
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
The PSR-1: Basic Coding Standard recommends that a file should either introduce new symbols, that is classes, functions, constants or similar, or have side effects. Side effects are anything that executes logic, like for example printing output, changing ini settings or writing to a file.
The idea behind this recommendation is that merely auto-loading a class should not change the state of an application. It also promotes a cleaner style of programming and makes your code less prone to errors, because the logic is not spread out all over the place.
To learn more about the PSR-1, please see the PHP-FIG site on the PSR-1.