Fix potential access to undefined index

Seldaek · Seldaek · commit de41002f2843 · 2015-09-17T11:14:05.000+01:00
diff --git a/src/Symfony/Component/EventDispatcher/EventDispatcher.php b/src/Symfony/Component/EventDispatcher/EventDispatcher.php
@@ -61,7 +61,11 @@ public function dispatch($eventName, Event $event = null)
     public function getListeners($eventName = null, $withPriorities = false)
     {
         if (true === $withPriorities) {
-            return $eventName ? $this->listeners[$eventName] : array_filter($this->listeners);
+            if (null !== $eventName) {
+                return isset($this->listeners[$eventName]) ? $this->listeners[$eventName] : array();
+            }
+
+            return array_filter($this->listeners);
         }
 
         if (null !== $eventName) {

Original file line number	Diff line number	Diff line change
`@@ -61,7 +61,11 @@ public function dispatch($eventName, Event $event = null)`
`61`	`61`	`public function getListeners($eventName = null, $withPriorities = false)`
`62`	`62`	`{`
`63`	`63`	`if (true === $withPriorities) {`
`64`		`- return $eventName ? $this->listeners[$eventName] : array_filter($this->listeners);`
	`64`	`+ if (null !== $eventName) {`
	`65`	`+ return isset($this->listeners[$eventName]) ? $this->listeners[$eventName] : array();`
	`66`	`+ }`
	`67`	`+`
	`68`	`+ return array_filter($this->listeners);`
`65`	`69`	`}`
`66`	`70`
`67`	`71`	`if (null !== $eventName) {`