3v4l.org

run code in 300+ PHP versions simultaneously
<?php function a($str1,$str2){ $d = $str1*4 + $str2*1; return $d; } for($count1 = 0; $count1 < 4; $count1++){ for($count2 = 0; $count2 < 4; $count2++){ $array[$count1][$count2] = a($count1,$count2); echo $array[$count1][$count2]; } } ?>
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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
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preferences:
327.08 ms | 405 KiB | 456 Q