(PHP 4 >= 4.0.2, PHP 5, PHP 7 < 7.2.0, PECL mcrypt >= 1.0.0)
mcrypt_enc_get_block_size — 返回打开的算法的分组大小
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.
$td
) : int获取打开的算法的分组大小。
td加密描述符。
返回指定算法的分组大小，以字节为单位。