3v4l.org

run code in 300+ PHP versions simultaneously
<?php for($j=0;$j<256;$j++){ for($i=0;$i<256;$i++){ for($k=0;$k<256;$k++){ $f=chr($i).chr($j).chr($k).'phpinfo'; if(function_exists($f)){ echo "$i\t$j\t$k\t$f\n"; } }}} ?>
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.37, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0, 7.1.7 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.4, 7.4.6 - 7.4.33, 8.0.0 - 8.0.24, 8.0.26 - 8.0.29, 8.1.0 - 8.1.12, 8.1.14, 8.1.18, 8.1.20 - 8.1.24, 8.1.28, 8.2.1 - 8.2.3, 8.2.6 - 8.2.11, 8.2.16 - 8.2.18, 8.3.3 - 8.3.6

Process exited with code 137.
Output for 7.1.5 - 7.1.6, 7.4.5, 8.0.25, 8.0.30, 8.1.13, 8.1.15 - 8.1.17, 8.1.19, 8.1.25 - 8.1.27, 8.2.0, 8.2.4 - 8.2.5, 8.2.12 - 8.2.15, 8.3.0 - 8.3.2
preferences:
232.99 ms | 403 KiB | 350 Q