3v4l.org

run code in 300+ PHP versions simultaneously
<?php function doit($v) { var_dump($v); switch ($v) { case 0: echo "zero"; break; case null: echo "null"; break; case false: echo "false"; break; case '': echo "''"; break; } echo "\n\n"; } foreach (array(0, null, false, '', 'a string', '1', '1cat') as $v) doit($v);

preferences:
36.53 ms | 402 KiB | 5 Q