Elep

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MongoDB\\GridFS\\Bucket::downloadToStream()
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.. default-domain:: mongodb

.. contents:: On this page
   :local:
   :backlinks: none
   :depth: 1
   :class: singlecol

Definition
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.. phpmethod:: MongoDB\\GridFS\\Bucket::downloadToStream()

Selects a GridFS file by its ``_id`` and copies its contents to a writable
   stream.

.. code-block:: php

function downloadToStream($id, $destination): void

This method has the following parameters:

.. include:: /includes/apiargs/MongoDBGridFSBucket-method-downloadToStream-param.rst

Errors/Exceptions
-----------------

.. include:: /includes/extracts/error-gridfs-filenotfoundexception.rst
.. include:: /includes/extracts/error-invalidargumentexception.rst
.. include:: /includes/extracts/error-driver-runtimeexception.rst

Examples
--------

.. code-block:: php

<?php

$bucket = (new MongoDB\Client)->test->selectGridFSBucket();

$stream = fopen('php://temp', 'w+b');
   fwrite($stream, "foobar");
   rewind($stream);

$id = $bucket->uploadFromStream('filename', $stream);

$destination = fopen('php://temp', 'w+b');

$bucket->downloadToStream($id, $destination);

var_dump(stream_get_contents($destination, -1, 0));

The output would then resemble::

string(6) "foobar"