3v4l.org

run code in 300+ PHP versions simultaneously
<?php $x = array(1.0, 1.111111111111111111, 1/3, 1e300, 1e-300); array_walk($x, function($v) { echo "$v" . PHP_EOL; echo json_encode($v) . PHP_EOL; echo PHP_EOL; });

preferences:
43.2 ms | 402 KiB | 5 Q