3v4l.org

run code in 500+ PHP versions simultaneously
<?php $a = new class { public function foo(){ return 'foo';}}; var_dump($a?->foo()); var_dump(($b = null)?->foo()); var_dump($c?->foo());
Output for 8.1.9 - 8.1.34, 8.2.10 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(3) "foo" NULL Warning: Undefined variable $c in /in/vMEvT on line 9 NULL

preferences:
73.11 ms | 852 KiB | 4 Q