(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
Esta función ha sido declarada OBSOLETA a partir de PHP 7.1.0 y será ELIMINADA a partir de PHP 7.2.0. Su uso está totalmente desaconsejado.
Tells whether the algorithm of the opened mode works on blocks (e.g.
false
for stream, and true
for cbc, cfb, ofb)..
td
The encryption descriptor.
Returns true
if the mode is for use with block algorithms, otherwise it
returns false
.