3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { public function exec(array &$context) { $context['bla'] = 'hoi'; } } class B extends A { public function exec(array $context) { parent::exec($context); var_dump($context); } } $b = new B(); $b->exec([]);
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Fatal error: Declaration of B::exec(array $context) must be compatible with A::exec(array &$context) in /in/XXmqE on line 10
Process exited with code 255.
Output for 7.4.0 - 7.4.33
Warning: Declaration of B::exec(array $context) should be compatible with A::exec(array &$context) in /in/XXmqE on line 10 array(1) { ["bla"]=> string(3) "hoi" }
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: Declaration of B::exec(array $context) should be compatible with A::exec(array &$context) in /in/XXmqE on line 14 array(1) { ["bla"]=> string(3) "hoi" }
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Strict Standards: Declaration of B::exec() should be compatible with A::exec(array &$context) in /in/XXmqE on line 14 array(1) { ["bla"]=> string(3) "hoi" }
preferences:
276.45 ms | 402 KiB | 376 Q