3v4l.org

run code in 300+ PHP versions simultaneously
<?php echo round (99.0000001, 6).PHP_EOL; echo round (99.000001, 6).PHP_EOL; echo round (99.00001, 6).PHP_EOL; echo round (99.0001, 6).PHP_EOL; echo round (99.001, 6).PHP_EOL; echo round (99.01, 6).PHP_EOL; echo round (99.10, 6).PHP_EOL; echo round (99.00, 6).PHP_EOL;
Output for 5.6.38, 7.0.33, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
99 99.000001 99.00001 99.0001 99.001 99.01 99.1 99
preferences:
148.09 ms | 404 KiB | 184 Q