(PHP 4 >= 4.0.2, PHP 5)
mcrypt_enc_is_block_algorithm_mode — Checks whether the encryption of the opened mode works on blocks
Tells whether the algorithm of the opened mode works on blocks (e.g. FALSE for stream, and TRUE for cbc, cfb, ofb)..
The encryption descriptor.
Returns TRUE if the mode is for use with block algorithms, otherwise it returns FALSE.