3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo print_r(0.1 + 0.2, true) . "\n"; echo "Old precision: " . ini_set("precision", -1) . "\n"; echo print_r(0.1 + 0.2, true) . "\n"; echo "Round with 14: " . print_r(round(0.1 + 0.2, 14), true);

preferences:
64.16 ms | 402 KiB | 5 Q