mcrypt_module_get_algo_block_size

Returns the blocksize of the specified algorithm

Warning

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

int mcrypt_module_get_algo_block_size ( string $algorithm [, string $lib_dir ] )

Gets the blocksize of the specified algorithm.

algorithm: The algorithm name.
lib_dir: This optional parameter can contain the location where the mode module is on the system.

Returns the block size of the algorithm specified in bytes.