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@ 2015-12-09T19:23:32Z

<?php

var_dump(bin2hex(mcrypt_create_iv(128, MCRYPT_DEV_URANDOM)));
var_dump(bin2hex(mcrypt_create_iv(56, MCRYPT_DEV_URANDOM)));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)
bin2hex: documentation ( source)

preferences:dark modelive preview

52.33 ms | 402 KiB | 5 Q