3v4l.org

run code in 300+ PHP versions simultaneously
<?php $sum = 0.1 + 0.9; echo "Sum is ". $sum ."\n"; if ($sum != 1){ echo "$sum is not equal to 1"; }
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.26, 8.0.0 - 8.0.13, 8.1rc1 - rc3
Sum is 1

preferences:
41.02 ms | 527 KiB | 12 Q