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<?php class friendList { private $friends; public function __construct(array $names=[]){ $this->friends = []; foreach($names as $name){$this->addFriend($name);} } public function addFriend($name) { $friends[] = $name; } public function getFriends() { return $friends; } } $friends = new friendList(['Eric','Dan','Lisa']); function funtimes($friends) { echo implode(", ", $friends->getFriends()); $this->addFriend('John'); } funtimes($friends); var_dump($friends);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined variable $friends in /in/9RrXD on line 13 Fatal error: Uncaught TypeError: implode(): Argument #1 ($pieces) must be of type array, string given in /in/9RrXD:19 Stack trace: #0 /in/9RrXD(19): implode(', ', NULL) #1 /in/9RrXD(23): funtimes(Object(friendList)) #2 {main} thrown in /in/9RrXD on line 19
Process exited with code 255.

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