Online PHP editor | refs for BtIQI

<?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 : $rand + 1; while(array_key_exists($random, $user)) { $random++; } $user[] = $random; if($n == 100) { $i++; $n = 0; } } print_r($pivot);