array ( 0 => 'index.php', 1 => 'PHP Manual', ), 'head' => array ( 0 => 'UTF-8', 1 => 'it', ), 'this' => array ( 0 => 'function.hash-update-stream.php', 1 => 'hash_update_stream', 2 => 'Pump data into an active hashing context from an open stream', ), 'up' => array ( 0 => 'ref.hash.php', 1 => 'Hash Funzioni', ), 'prev' => array ( 0 => 'function.hash-update-file.php', 1 => 'hash_update_file', ), 'next' => array ( 0 => 'book.mcrypt.php', 1 => 'Mcrypt', ), 'alternatives' => array ( ), 'source' => array ( 'lang' => 'en', 'path' => 'reference/hash/functions/hash-update-stream.xml', ), 'history' => array ( ), ); $setup["toc"] = $TOC; $setup["toc_deprecated"] = $TOC_DEPRECATED; $setup["parents"] = $PARENTS; manual_setup($setup); contributors($setup); ?>

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

Descrizione

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

Elenco dei parametri

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.

Valori restituiti

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

Log delle modifiche

Versione Descrizione
7.2.0 Accept HashContext instead of resource.

Esempi

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);
?>

Il precedente esempio visualizzerà:

68b1282b91de2c054c36629cb8dd447f12f096d3e3c587978dc2248444633483

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