mcrypt_enc_is_block_algorithm_mode

Checks whether the encryption of the opened mode works on blocks

Warning

This function has been DEPRECATED as of PHP 7.1.0 and REMOVED as of PHP 7.2.0. Relying on this function is highly discouraged.

bool mcrypt_enc_is_block_algorithm_mode(resource $td)

Tells whether the algorithm of the opened mode works on blocks (e.g. false for stream, and true for cbc, cfb, ofb)..

Returns true if the mode is for use with block algorithms, otherwise it returns false.