(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_enc_is_block_algorithm — Checks whether the algorithm of the opened mode is a block algorithm
This function has been DEPRECATED as of PHP 7.1.0. Relying on this function is highly discouraged.
$td) : bool
Tells whether the algorithm of the opened mode is a block algorithm.
The encryption descriptor.
TRUE if the algorithm is a block algorithm or
FALSE if it is
a stream one.