3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { function __construct($a) { echo $a; } } class B extends A { function __construct(){ } } new A;
Output for 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
Fatal error: Uncaught ArgumentCountError: Too few arguments to function A::__construct(), 0 passed in /in/EBeZN on line 16 and exactly 1 expected in /in/EBeZN:3 Stack trace: #0 /in/EBeZN(16): A->__construct() #1 {main} thrown in /in/EBeZN on line 3
Process exited with code 255.
Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20
Warning: Missing argument 1 for A::__construct(), called in /in/EBeZN on line 16 and defined in /in/EBeZN on line 3 Notice: Undefined variable: a in /in/EBeZN on line 4
Output for 5.0.0 - 5.0.5
Warning: Missing argument 1 for A::__construct() in /in/EBeZN on line 3
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9

preferences:
252.1 ms | 402 KiB | 357 Q