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@ 2014-05-10T21:38:57Z

<?php

$numberOfRandoms = 500;

$uniques = array();
for($i = 0; $i < $numberOfRandoms; $i++)  {
    $uniques[mt_rand(10000, 99999)] = true;
}

$uniques = array_keys($uniques);

Output
Performance
VLD
References
Branches

mt_rand: documentation ( source)
array_keys: documentation ( source)

preferences:dark modelive preview

34.56 ms | 402 KiB | 5 Q