3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A { function __construct(int $a) {} } class B extends A { function __construct(int $a, int $b) {} } $foo = new B(1, 2);
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, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to B::__construct() must be an instance of int, integer given, called in /in/W4ejE on line 11 and defined in /in/W4ejE on line 8
Process exited with code 255.
preferences:
77.22 ms | 2086 KiB | 4 Q