mcrypt
PHP Manual

mcrypt_enc_is_block_algorithm_mode

(PHP 4 >= 4.0.2, PHP 5)

mcrypt_enc_is_block_algorithm_mode — Checks whether the encryption of the opened mode works on blocks

Description

bool mcrypt_enc_is_block_algorithm_mode ( resource $td )

This function returns TRUE if the mode is for use with block algorithms, otherwise it returns FALSE. (e.g. FALSE for stream, and TRUE for cbc, cfb, ofb).


mcrypt
PHP Manual