mcrypt
PHP Manual

mcrypt_enc_is_block_algorithm

(PHP 4 >= 4.0.2, PHP 5)

mcrypt_enc_is_block_algorithm — Checks whether the algorithm of the opened mode is a block algorithm

Description

bool mcrypt_enc_is_block_algorithm ( resource $td )

This function returns TRUE if the algorithm is a block algorithm, or FALSE if it is a stream algorithm.


mcrypt
PHP Manual