3v4l.org

run code in 300+ PHP versions simultaneously
<?php declare(strict_types=1); function hello(int $v = null){ var_dump($v); } hello(); hello(1); hello(null);
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 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 - 8.3.6
NULL int(1) NULL
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28
Warning: Unsupported declare 'strict_types' in /in/WBpLb on line 2 NULL Catchable fatal error: Argument 1 passed to hello() must be an instance of int, integer given, called in /in/WBpLb on line 8 and defined in /in/WBpLb on line 4
Process exited with code 255.
preferences:
179.94 ms | 402 KiB | 227 Q