3v4l.org

run code in 200+ PHP versions simultaneously
<?php class Loader { public function __call($name, $arguments) { eval("class $arguments[0] {}"); } } spl_autoload_register(array(new Loader(), 'load_class')); $a = "a"; for ($i = 0; $i < 10; $i++) { new $a; $a++; } echo "Done";
based on LCoFc
Output for 7.0.16 - 7.0.26, 7.1.2 - 7.4.0
Done
Output for 5.3.0 - 7.0.15, 7.1.0 - 7.1.1

Process exited with code 139.
Output for 5.1.0 - 5.2.17
Warning: Missing argument 2 for Loader::__call() in /in/AecvW on line 5 Notice: Undefined variable: arguments in /in/AecvW on line 7 Parse error: syntax error, unexpected '{', expecting T_STRING in /in/AecvW(7) : eval()'d code on line 1 Fatal error: Class 'a' not found in /in/AecvW on line 14
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Fatal error: Call to undefined function spl_autoload_register() in /in/AecvW on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/AecvW on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/AecvW on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/AecvW on line 5
Process exited with code 255.