3v4l.org

run code in 500+ PHP versions simultaneously
<?php function test() { set_error_handler(function ($errno, $errstr, $errfile, $errline, $context = null) { var_dump($context); }); $a = 1; $$a = 2; $x++; // generates error } test();

preferences:
85.31 ms | 1525 KiB | 5 Q