(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_enc_is_block_algorithm_mode — Checks whether the encryption of the opened mode works on blocks
This function has been DEPRECATED as of PHP 7.1.0 and REMOVED as of PHP 7.2.0. Relying on this function is highly discouraged.
$td
) : bool
Tells whether the algorithm of the opened mode works on blocks (e.g.
FALSE for stream, and TRUE for cbc, cfb, ofb)..
tdThe encryption descriptor.
Returns TRUE if the mode is for use with block algorithms, otherwise it
returns FALSE.