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@ 2014-02-19T21:52:52Z

<?php

$random_key = '';
for( $i = 0; $i <= 64; $i++) {
    $random_key .= chr(rand(65, 90));
}

print strlen($random_key);

Output
Performance
VLD
References
Branches

chr: documentation ( source)
rand: documentation ( source)

preferences:dark modelive preview

37.21 ms | 402 KiB | 5 Q