3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($a = NULL,$b = NULL,$c = NULL){ print(gettype($a)); print(gettype($b)); print(gettype($c)); } test("a",1);
Output for 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
stringintegerNULL
preferences:
111.85 ms | 1485 KiB | 5 Q