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# hash_update_stream

(no version information, might be only in CVS)

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] )

## 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()

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