3v4l.org

run code in 500+ PHP versions simultaneously
<?php number_format(1.23456, -9876543210);
Output for 8.2.31, 8.3.0 - 8.3.31, 8.4.1 - 8.4.22, 8.5.0 - 8.5.7
preferences:
49.65 ms | 743 KiB | 4 Q