Mcrypt Functions
PHP Manual

mcrypt_enc_get_block_size

Returns the blocksize of the opened algorithm

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.

Description

int mcrypt_enc_get_block_size(resource $td)

Gets the blocksize of the opened algorithm.

Parameters

td

The encryption descriptor.

Return Values

Returns the block size of the specified algorithm in bytes.