Mcrypt Functions
PHP Manual

mcrypt_enc_get_block_size

(PHP 4 >= 4.0.2, PHP 5, PHP 7)

mcrypt_enc_get_block_size — Returns the blocksize of the opened algorithm

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.

Mcrypt Functions
PHP Manual