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(PHP 4, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_get_block_size — Gets the block size of the specified cipher
Ця функція ЗАСТАРІЛА, починаючи з PHP 7.1.0, та ВИЛУЧЕНА в PHP 7.2.0. Вкрай не рекомендується на неї покладатися.
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().
cipher
Одна з констант
MCRYPT_ciphername
або назва алгоритму у вигляді
рядка.
mode
Одна з констант
MCRYPT_MODE_modename
або один з рядків: "ecb", "cbc",
"cfb", "ofb", "nofb", "stream".
Returns the algorithm block size in bytes або false
в разі помилки.
Приклад #1 mcrypt_get_block_size() example
This example shows how to use this function when linked against libmcrypt 2.4.x and 2.5.x.
<?php
echo mcrypt_get_block_size('tripledes', 'ecb'); // 8
?>