3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function x($a, $b) { $a = 4; printf("argv[0]:%d a:%d\n", func_get_arg(0), $a); } x(1,2);
Output for hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
argv[0]:4 a:4
Output for 5.3.0 - 5.6.28
argv[0]:1 a:4
Output for 4.3.2 - 5.2.17
Fatal error: func_get_arg(): Can't be used as a function parameter in /in/KcRZK on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: func_get_arg(): Can't be used as a function parameter in /in/KcRZK on line 5