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@ 2014-05-18T15:09:58Z

<?php
echo preg_replace('/[^a-zA-Z0-9]/', '', base64_encode(openssl_random_pseudo_bytes(12)));

Output
Performance
VLD
References
Branches

base64_encode: documentation ( source)
preg_replace: documentation ( source)

preferences:dark modelive preview

49.32 ms | 402 KiB | 5 Q