3v4l.org

run code in 300+ 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();

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28.42 ms | 405 KiB | 5 Q