3v4l.org

run code in 300+ PHP versions simultaneously
<?php $b = ""; for ($x = 0; $x < 256; ++$x) $b .= chr($x); $a = [ $b ]; var_dump(json_encode($a)); var_dump(json_decode(json_encode($a)));

preferences:
100.13 ms | 1423 KiB | 5 Q