<?php $uniqueNumbers = 100; $picked = []; $randoms = array_map(function () use(&$picked, $uniqueNumbers) { do { $rand = rand(0, $uniqueNumbers); } while(in_array($rand, $picked)); $picked[] = $rand; return $rand; }, array_fill(0, $uniqueNumbers, null)); sort($randoms); var_dump($randoms);
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