3v4l.org

run code in 500+ PHP versions simultaneously
<?php class x { private X $y; function __invoke() { echo __METHOD__;} function foo() { $this->y = new X; $this->y(); // better this way ($this->y)(); } } (new X)->foo();
Output for 8.1.32 - 8.1.34, 8.2.0 - 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
Fatal error: Uncaught Error: Call to undefined method x::y() in /in/BtooN:10 Stack trace: #0 /in/BtooN(16): x->foo() #1 {main} thrown in /in/BtooN on line 10
Process exited with code 255.

preferences:
32.26 ms | 883 KiB | 4 Q