hash_update_stream

(PHP 5 >= 5.1.2, PHP 7, PHP 8, PECL hash >= 1.1)

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

Descrição

hash_update_stream(HashContext $context, resource $stream, int $length = -1): int

Parâmetros

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

Valor Retornado

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

Registro de Alterações

Versão	Descrição
7.2.0	Accept HashContext instead of resource.

Exemplos

Example #1 hash_update_stream() example

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

$ctx = hash_init('sha256');
hash_update($ctx, 'The quick brown fox ');
hash_update_stream($ctx, $fp);
echo hash_final($ctx);
?>

O exemplo acima produzirá:

68b1282b91de2c054c36629cb8dd447f12f096d3e3c587978dc2248444633483

Veja Também

hash_init() - Initialize an incremental hashing context
hash_update() - Pump data into an active hashing context
hash_update_stream()
hash_final() - Finalize an incremental hash and return resulting digest