hash_update_file

hash_update_stream

Pump data into an active hashing context from an open stream

Description

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

Parameters

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.

Return Values

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

Examples

Example #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);
?>

The above example will output:

5c6ffbdd40d9556b73a21e63c3e0e904

See Also

hash_init
hash_update
hash_final
hash
hash_file