(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_enc_self_test — Runs a self test on the opened module
This function has been DEPRECATED as of PHP 7.1.0. Relying on this function is highly discouraged.
$td
) : int
This function runs the self test on the algorithm specified by the
descriptor td.
tdThe encryption descriptor.
Returns 0 on success and a negative integer on failure.