3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($a){ $c = []; foreach ($a as $b){$c[]=$b*$b;} return $c; } $a = range(1,1e4); $d = test($a); print 'done';
Output for 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
done
preferences:
258.41 ms | 404 KiB | 329 Q