3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class X { // public $call; public function __construct() { // $this->call = function () { echo "x"; }; } public function call() { echo "y"; } } $object = new X; ($object->call)();
based on Q9Ook
Output for 7.0.0 - 7.3.1
Notice: Undefined property: X::$call in /in/6PSd5 on line 17 Fatal error: Uncaught Error: Function name must be a string in /in/6PSd5:17 Stack trace: #0 {main} thrown in /in/6PSd5 on line 17
Process exited with code 255.
Output for hhvm-3.22.0
Notice: Undefined property: X::$call in /in/6PSd5 on line -1 Fatal error: Uncaught Error: Function name must be a string in /in/6PSd5:-1 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.11.1 - 3.21.3
Notice: Undefined property: X::$call in /in/6PSd5 on line 17 Fatal error: Uncaught Error: Function name must be a string in /in/6PSd5:17 Stack trace: #0 {main}
Process exited with code 255.
Output for hhvm-3.10.1
Notice: Undefined property: X::$call in /in/6PSd5 on line 17 Fatal error: Function name must be a string in /in/6PSd5 on line 17
Process exited with code 255.
Output for 5.3.20 - 5.6.38
Parse error: syntax error, unexpected '(' in /in/6PSd5 on line 17
Process exited with code 255.