hash_update_stream

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

hash_update_stream — Pump data into an active hashing context from an open stream

Описание

int hash_update_stream ( resource $context , resource $handle [, int $length= -1 ] )

Список параметров

context: Hashing context returned by hash_init().
handle: Open file handle as returned by any stream creation function.
length: Maximum number of characters to copy from handle into the hashing context.

Возвращаемые значения

Actual number of bytes added to the hashing context from handle .

Примеры

Пример #1 hash_update_stream() example


<?php
$fp = tmpfile();
fwrite($fp, 'The quick brown fox jumped over the lazy dog.');
rewind($fp);

$ctx = hash_init('md5');
hash_update_stream($ctx, $fp);
echo hash_final($ctx);
?>

Результат выполнения данного примера:

5c6ffbdd40d9556b73a21e63c3e0e904

Смотрите также

hash_init() - Initialize an incremental hashing context
hash_update() - Pump data into an active hashing context
hash_final() - Finalize an incremental hash and return resulting digest
hash() - Generate a hash value (message digest)
hash_file() - Generate a hash value using the contents of a given file