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# mcrypt_module_get_algo_block_size

(PHP 4 >= 4.0.2)

mcrypt_module_get_algo_block_size -- Returns the blocksize of the specified algorithm

## Description

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

This function returns the block size of the algorithm specified in bytes. The optional `lib_dir` parameter can contain the location where the mode module is on the system.

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