Release: AWS SDK for PHP 1.4.8 "Zanarkand"

Release Notes>PHP>Release: AWS SDK for PHP 1.4.8 "Zanarkand"
This release adds support for Amazon S3 Multi-Object Delete, and resolves issues reported via blogs, Twitter and GitHub.


Submitted By: RyanP
Release Date: December 8, 2011 2:34 AM GMT
Latest Version: 1.4.8
Created On: December 8, 2011 2:35 AM GMT
Last Updated: December 8, 2011 2:35 AM GMT


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New Features

Change Description

Amazon S3 Multi Object Delete

The AmazonS3 class now allows you to delete multiple Amazon S3 objects using a single HTTP request. This has been exposed as the delete_objects() method, and the delete_all_objects() and delete_all_object_versions() methods have been rewritten to leverage this new Amazon S3 feature.

$s3 = new AmazonS3();
$response = $s3->delete_objects($bucket, array(
    'objects' => array(
        array('Key' => 'file1.txt'),
        array('Key' => 'file2.txt'),

Resolved Issues

Change Description

Amazon CloudFront

Resolved an issue where the update_config_xml() method was generating incorrect XML.

For more information, please see the relevant GitHub pull request.

Amazon EC2

Resolved an issue where the set_region() method was generating invalid endpoint URIs.

For more information, please see Amazon PHP SDK v1.4.7 set_region bug for EC2: DNS names not properly resolved.

Amazon S3

The XML and JSON objects stored in Amazon S3 are no longer parsed when downloaded using the get_object() method.

For more information, please see S3 data being retrieved as JSON - SDK 1.3.5.

Known Issues

Issue Description

2GB limit for 32-bit stacks; all Windows stacks.

Because PHP's integer type is signed and many platforms use 32-bit integers, the AWS SDK for PHP does not correctly handle files larger than 2GB on a 32-bit stack (whereby "stack" includes CPU, OS, web server, and PHP binary). This is a well-known PHP issue. In the case of Microsoft® Windows®, there are no official builds of PHP that support 64-bit integers.

The recommended solution is to use a 64-bit Linux stack, such as the 64-bit Amazon Linux AMI with the latest version of PHP installed.

For more information, please see: PHP filesize: Return values. A workaround is suggested in AmazonS3::create_mpu_object() with files bigger than 2GB.

S3 Buckets containing periods

Amazon S3's SSL certificate covers domains that match * When buckets (e.g., my-bucket) are accessed using DNS-style addressing (e.g.,, those SSL/HTTPS connections are covered by the certificate.

However, when a bucket name contains one or more periods (e.g., and is accessed using DNS-style addressing (e.g.,, that SSL/HTTPS connection will fail because the certificate doesn't match.

The most secure workaround is to change the bucket name to one that does not contain periods. Less secure workarounds are to use disable_ssl() or disable_ssl_verification(). Because of the security implications, calling either of these methods will throw a warning. You can avoid the warning by adjusting your error_reporting() settings.

Expiring request signatures

When leveraging AmazonS3::create_mpu_object(), it's possible that later parts of the multipart upload will fail if the upload takes more than 15 minutes.

Too many open file connections

When leveraging AmazonS3::create_mpu_object(), it's possible that the SDK will attempt to open too many file resources at once. Because the file connection limit is not available to the PHP environment, the SDK is unable to automatically adjust the number of connections it attempts to open.

A workaround is to increase the part size so that fewer file connections are opened.

Exceptionally large batch requests

When leveraging the batch request feature to execute multiple requests in parallel, it's possible that the SDK will throw a fatal exception if a particular batch pool is exceptionally large and a service gets overloaded with requests.

This seems to be most common when attempting to send a large number of emails with the SES service.

Supported API Versions

The AWS SDK for PHP supports the following services and API versions:

Service API Version
Amazon CloudFront 2010-11-01
Amazon CloudWatch 2010-08-01
Amazon Elastic Compute Cloud (Amazon EC2) with Amazon Virtual Private Cloud (Amazon VPC) 2011-05-15
Amazon ElastiCache 2011-07-15
Amazon Elastic MapReduce (Amazon EMR) 2009-03-31
Amazon Relational Database Service (Amazon RDS) 2011-04-01
Amazon Simple Storage Service (Amazon S3) 2006-03-01
Amazon SimpleDB 2009-04-15
Amazon Simple Email Service (Amazon SES) 2010-12-01
Amazon Simple Notification Service (Amazon SNS) 2010-03-31
Amazon Simple Queue Service (Amazon SQS) 2011-10-01
Auto Scaling 2010-08-01
AWS CloudFormation 2010-05-15
AWS Elastic Beanstalk 2010-12-01
AWS Identity and Access Management 2010-05-08
AWS Import/Export 2010-06-01
AWS Security Token Service 2011-06-15
Elastic Load Balancing (ELB) 2011-08-15
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