3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pivot = []; $n = 0; for ($i = 1; $i <= 100; $i++) { $pivot[$i] = []; } for($i = 1; $i <= 100; $n++) { $user = $pivot[rand($i, 100)]; $rand = rand(0, 100); $random = $rand != $user ? $rand : $rand + 1; $user[] = $random; if($n == 10) { $i++; $n = 0; } } print_r($array);

preferences:
40.16 ms | 402 KiB | 5 Q