3v4l.org

run code in 300+ PHP versions simultaneously
<?php ini_set("precision", 100); echo 0.3;
Output for 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.26, 8.4.1 - 8.4.13
0.299999999999999988897769753748434595763683319091796875
preferences:
89.15 ms | 406 KiB | 5 Q