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<mcrypt_enc_get_algorithms_namemcrypt_enc_get_iv_size>
^Mcrypt FunctionsLast updated: Mon, 26 Oct 2026

mcrypt_enc_get_block_size

(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)

mcrypt_enc_get_block_size — Returns the blocksize of the opened algorithm

Warning

This function has been DEPRECATED as of PHP 7.1.0 and REMOVED as of PHP 7.2.0. Relying on this function is highly discouraged.

Description

function mcrypt_enc_get_block_size(resource $td): int

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_enc_get_algorithms_namemcrypt_enc_get_iv_size>
^Mcrypt FunctionsLast updated: Mon, 26 Oct 2026