3v4l.org

run code in 300+ PHP versions simultaneously
<?php set_error_handler(function(){ print_r(debug_backtrace()); }); class x { static function y() { include '/tmp/asdf.php'; include_once '/tmp/asdf.php'; require '/tmp/asdf.php'; } } x::y();

preferences:
40.09 ms | 402 KiB | 5 Q