3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php function foo() { print_r(debug_backtrace()); } foo();
Output for 4.3.0 - 5.6.28, hhvm-3.12.0, 7.0.0 - 7.1.0
Array ( [0] => Array ( [file] => /in/W0bKB [line] => 7 [function] => foo [args] => Array ( ) ) )
Output for hhvm-3.10.0

Process exited with code 153.