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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
Beschreibung
int hash_update_stream
( resource $context
, resource $handle
[, int $length = -1
] )
Parameter-Liste
- context
-
Hashing context returned by hash_init().
- handle
-
Open file handle as returned by any stream creation function.
- length
-
Maximum number of characters to copy from handle into the hashing context.
Rückgabewerte
Actual number of bytes added to the hashing context from handle .
Beispiele
PHP Code
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$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);
Das oben gezeigte Beispiel erzeugt folgende Ausgabe:
5c6ffbdd40d9556b73a21e63c3e0e904
Siehe auch
- 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