ceph/doc/radosgw/s3/php.rst

.. _php:

PHP S3 Examples
===============

Creating a Connection
---------------------

This creates a connection so that you can interact with the server.

.. code-block:: php

	<?php
	define('AWS_KEY', 'place access key here');
	define('AWS_SECRET_KEY', 'place secret key here');
	define('AWS_CANONICAL_ID', 'your DHO Username');
	define('AWS_CANONICAL_NAME', 'Also your DHO Username!');
	$HOST = 'objects.dreamhost.com';

	// require the amazon sdk for php library
	require_once 'AWSSDKforPHP/sdk.class.php';

	// Instantiate the S3 class and point it at the desired host
	$Connection = new AmazonS3(array(
		'key' => AWS_KEY,
		'secret' => AWS_SECRET_KEY,
		'canonical_id' => AWS_CANONICAL_ID,
		'canonical_name' => AWS_CANONICAL_NAME,
	));
	$Connection->set_hostname($HOST);
	$Connection->allow_hostname_override(false);

	// Set the S3 class to use objects.dreamhost.com/bucket
	// instead of bucket.objects.dreamhost.com
	$Connection->enable_path_style();


Listing Owned Buckets
---------------------
This gets a list of CFSimpleXML objects representing buckets that you
own.  This also prints out the bucket name and creation date of each
bucket.

.. code-block:: php

	<?php
	$ListResponse = $Connection->list_buckets();
	$Buckets = $ListResponse->body->Buckets->Bucket;
	foreach ($Buckets as $Bucket) {
		echo $Bucket->Name . "\t" . $Bucket->CreationDate . "\n";
	}

The output will look something like this::

   mahbuckat1	2011-04-21T18:05:39.000Z
   mahbuckat2	2011-04-21T18:05:48.000Z
   mahbuckat3	2011-04-21T18:07:18.000Z


Creating a Bucket
-----------------

This creates a new bucket called ``my-new-bucket`` and returns a
``CFResponse`` object.

.. note::

   This command requires a region as the second argument,
   so we use ``AmazonS3::REGION_US_E1``, because this constant is ``''``

.. code-block:: php

	<?php
	$Connection->create_bucket('my-new-bucket', AmazonS3::REGION_US_E1);


List a Bucket's Content
-----------------------

This gets an array of ``CFSimpleXML`` objects representing the objects
in the bucket. This then prints out each object's name, the file size,
and last modified date.

.. code-block:: php

	<?php
	$ObjectsListResponse = $Connection->list_objects($bucketname);
	$Objects = $ObjectsListResponse->body->Contents;
	foreach ($Objects as $Object) {
		echo $Object->Key . "\t" . $Object->Size . "\t" . $Object->LastModified . "\n";
	}

.. note::

   If there are more than 1000 objects in this bucket,
   you need to check $ObjectListResponse->body->isTruncated
   and run again with the name of the last key listed.
   Keep doing this until isTruncated is not true.

The output will look something like this if the bucket has some files::

   myphoto1.jpg	251262	2011-08-08T21:35:48.000Z
   myphoto2.jpg	262518	2011-08-08T21:38:01.000Z


Deleting a Bucket
-----------------

This deletes the bucket called ``my-old-bucket`` and returns a
``CFResponse`` object

.. note::

   The Bucket must be empty! Otherwise it won't work!

.. code-block:: php

	<?php
	$Connection->delete_bucket('my-old-bucket');


Forced Delte for Non-empty Buckets
----------------------------------

This will delete the bucket even if it is not empty.

.. code-block:: php

	<?php
	$Connection->delete_bucket('my-old-bucket', 1);


Creating an Object
------------------

This creates an object ``hello.txt`` with the string ``"Hello World!"``

.. code-block:: php

	<?php
	$Connection->create_object('my-bucket-name', 'hello.txt', array(
		'body' => "Hello World!",
	));


Change an Object's ACL
----------------------

This makes the object ``hello.txt`` to be publicly readable and
``secret_plans.txt`` to be private.

.. code-block:: php

	<?php
	$Connection->set_object_acl('my-bucket-name', 'hello.txt', AmazonS3::ACL_PUBLIC);
	$Connection->set_object_acl('my-bucket-name', 'secret_plans.txt', AmazonS3::ACL_PRIVATE);


Delete an Object
----------------

This deletes the object ``goodbye.txt``

.. code-block:: php

	<?php
	$Connection->delete_object('my-bucket-name', 'goodbye.txt');


Download an Object (to a file)
------------------------------

This downloads the object ``poetry.pdf`` and saves it in
``/home/larry/documents/``

.. code-block:: php

	<?php
	$FileHandle = fopen('/home/larry/documents/poetry.pdf', 'w+');
	$Connection->get_object('my-bucket-name', 'poetry.pdf', array(
		'fileDownload' => $FileHandle,
	));


Generate Object Download URLs (signed and unsigned)
---------------------------------------------------

This generates an unsigned download URL for ``hello.txt``.
This works because we made ``hello.txt`` public by setting
the ACL above. This then generates a signed download URL
for ``secret_plans.txt`` that will work for 1 hour.
Signed download URLs will work for the time period even
if the object is private (when the time period is up,
the URL will stop working).

.. code-block:: php

	<?php
	my $plans_url = $Connection->get_object_url('my-bucket-name', 'hello.txt');
	echo $plans_url . "\n";
	my $secret_url = $Connection->get_object_url('my-bucket-name', 'secret_plans.txt', '1 hour');
	echo $secret_url . "\n";

The output of this will look something like::

   http://objects.dreamhost.com/my-bucket-name/hello.txt
   http://objects.dreamhost.com/my-bucket-name/secret_plans.txt?Signature=XXXXXXXXXXXXXXXXXXXXXXXXXXX&Expires=1316027075&AWSAccessKeyId=XXXXXXXXXXXXXXXXXXX