Hash 函数
PHP Manual

hash_update

(PHP 5 >= 5.1.2, PECL hash >= 1.1)

hash_updatePump data into an active hashing context

说明

bool hash_update ( resource $context , string $data )

参数

context

Hashing context returned by hash_init().

data

Message to be included in the hash digest.

返回值

Returns TRUE.

参见


Hash 函数
PHP Manual