[ticket/16206] Remove offsetExists and set non-NULL value

PHPBB3-16206

phpBB/phpbb/di/service_collection.php

@@ -49,21 +49,6 @@ class service_collection extends \ArrayObject
 		return new service_collection_iterator($this);
 	}
 
-	// Because of a PHP issue we have to redefine offsetExists
-	// (even with a call to the parent):
-	// 		https://bugs.php.net/bug.php?id=66834
-	// 		https://bugs.php.net/bug.php?id=67067
-	// But it triggers a sniffer issue that we have to skip
-	// @codingStandardsIgnoreStart
-	/**
-	* {@inheritdoc}
-	*/
-	public function offsetExists($index)
-	{
-		return parent::offsetExists($index);
-	}
-	// @codingStandardsIgnoreEnd
-
 	/**
 	* {@inheritdoc}
 	*/
@@ -76,11 +61,11 @@ class service_collection extends \ArrayObject
 	* Add a service to the collection
 	*
 	* @param string $name The service name
-	* @return null
+	* @return void
 	*/
 	public function add($name)
 	{
-		$this->offsetSet($name, null);
+		$this->offsetSet($name, false);
 	}
 
 	/**