PHP mcrypt_get_block_size function

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mcrypt_get_block_size

(PHP 3 >= 3.0.8, PHP 4, PHP 5)

The first prototype is when linked against libmcrypt 2.2.x, the
second when linked against libmcrypt 2.4.x or 2.5.x.

mcrypt_get_block_size() is used to get the
size of a block of the specified cipher (in
combination with an encryption mode).

It is more useful to use the mcrypt_enc_get_block_size()
function as this uses the resource returned by
mcrypt_module_open().

This example shows how to use this function when linked against libmcrypt
2.4.x and 2.5.x.

Example 1. mcrypt_get_block_size() example

    echo mcrypt_get_block_size('tripledes', 'ecb');

Prints:
8

See also: mcrypt_get_key_size(),
mcrypt_enc_get_block_size() and
mcrypt_encrypt().