3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = 0; $b = 0; for($i = 1; $i <= 100; $i++) { $a += pow($i, 2); $b += $i; } $c = pow($b, 2) - $a; echo "A: {$a}\nB: {$b}\nC: {$c}";
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 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 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 - 8.2.18, 8.3.0 - 8.3.6
A: 338350 B: 5050 C: 25164150
preferences:
284.8 ms | 405 KiB | 459 Q