3v4l.org

run code in 300+ PHP versions simultaneously
<?php error_reporting(0); $argv[1]="uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuug uuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu"; $s=substr_count;foreach(explode(' ',$argv[1])as$c)echo chr($s($c,u)+2*$s($c,g));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.12

Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
32
preferences:
142.14 ms | 408 KiB | 5 Q