3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set('precision', "16"); $x = 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1 + 0.1; var_dump( ini_get('precision'), $x, (string)$x );
preferences:
42.43 ms | 1599 KiB | 5 Q