Support: 1-800-961-4454
Sales Chat

Boost Cloud Sites Performance With PHP 5.4 And .NET 4.5 Upgrades


We’re upgrading Rackspace Cloud Sites to PHP 5.4 and .NET 4.5, which should boost performance of the php sites and .NET sites you host on Cloud Sites.

The upgrades are among some new and upcoming features we highlighted for customers in August, and follow the November launch of WordPress one-click install, a great addition to our WordPress hosting.

A list of the latest versions of all software currently supported by Cloud Sites is available here.

Boost Performance On Your PHP Sites With PHP 5.4

Key Benefits Of PHP 5.4

PHP 5.4 introduces a number of new features that make your PHP sites perform up to 50 percent faster compared to PHP 5.3.  Some of the key features include:

Other features include always on short tags (<?), the ability to represent integers in binary and support for callable type hint. PHP 5.4 is also deprecating register_globals, magic_quotes and safe mode.

See the PHP 5.4 Release Announcement for more details.

Migrating To PHP 5.4

You are welcome to migrate your site to PHP 5.4 at any time, just please ensure that your application is compatible with version 5.4 prior to your update.   We intend to support both PHP 5.3 and 5.4, and we do not have plans to require customers to upgrade from PHP 5.3 to 5.4 at this time. Click here to learn how to migrate.

Improve Performance On Your .NET Sites With .NET 4.5

Key Benefits Of .NET 4.5

The new features available in .NET 4.5 can help you achieve a significant performance boost for web-server workloads. This includes a reduction (up to 35 percent) in both startup time and in the memory footprint of web hosting sites that use ASP.NET. Some of the various performance improvements for web hosting include:

  • Multi-core JIT compilation for faster startup
  • Bundling and Minification
  • Improvements to HttpRequest handling
  • Asynchronously flushing a response
  • New ASP.NET Request validation features

See the Microsoft ASP 4.5 documentation for more details.

Migrating To .NET 4.5

You are welcome to migrate your .NET site to .NET 4.5 at any time, just please ensure that your application is compatible with version 4.5 prior to your update.   We do not have plans to require customers to upgrade from .NET 4.0 to 4.5 at this time. Click here to learn how to migrate.


Previous Cloud Sites Product Updates
WordPress one-click install
Upgrade to MySQL 5.1
Upgrade to Microsoft SQL Server 2012
Upgrade to PHP 5.3 and .NET 4.0 and more

As always, we welcome your feedback on Cloud Sites and your experience with these and other features on our product feedback site.

Do you love Rackspace Cloud Sites? Share why. Click Here

Tags: , ,

About the Author

This is a post written and contributed by Tarun Bhatti.

As a founding member and marketing lead for Rackspace's DevOps Automation Service, Tarun enjoys spending half of his time talking to customers about about their DevOps needs and other half working with the team to build the offer that meet customer needs. At Rackspace, Tarun has led various growth initiatives and product marketing for the cloud portfolio, including SaaS, Hybrid Cloud, Managed Cloud, Cloud Sites, Cloud Monitoring. Connect with him on @TarunBhatti, Google+ or Linkedin

Connect with him on Twitter @TarunBhatti, Google+ or LinkedIn.

  • Tyler

    The link to “php sites” ( is broken – delivering a 404 page.

    • Andrew Hickey

      Hi Tyler,

      I’ve updated the links to “php sites” and to “.NET.” The URLs had changed.


  • Adi

    Do you support PHP 5.4 + client to Cassandra 1.2 + Cassandra 1.2 ?

  • php training in India

    PHP is one of the most popular choice when it comes to web programming languages for developing dynamic websites.In this condition these minor updates are making
    PHP further powerful language in PHP world.
    Great effort.

  • Rakesh

    PHP 5.4 really boost up performance. Beside boosting up performance, it also provides better approach to writing codes. Better short hand tags. Removal of deprecated functions really lower downs the memory usage. Lots of core code path has been changed, which caused less memory usage and faster code execution. I have summed up some of the noticeable changes here and I hope, readers of this article will have a better idea of the changes from my other article.

Racker Powered
©2016 Rackspace, US Inc.