3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a(bool $a) { var_dump($a); } a(1); a(true); a(""); a("true"); a("cat");
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 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
bool(true) bool(true) bool(false) bool(true) bool(true)
Output for 5.6.0 - 5.6.40
Catchable fatal error: Argument 1 passed to a() must be an instance of bool, integer given, called in /in/JoKXj on line 8 and defined in /in/JoKXj on line 3
Process exited with code 255.
preferences:
220.64 ms | 401 KiB | 290 Q