Developers cannot leverage PHP 5′s full potential without dropping support for PHP 4, but PHP 4 is still installed on a majority of shared web hosts. The PHP community has decided that it is time to move forward, together. Effective February 5th, 2008, any new feature releases will have a minimum version requirement of at least PHP 5.2.0.
Want to prevent people from linking to your downloads? This script will force a page to be loaded before the download starts. HTML header statements are used to trigger the download of the file. PHP is used to push the file to the browser.
Most PHP developers use a Windows desktop to develop their code, but then turn to Linux when it comes time to deploy their apps. It’s a situation that Microsoft is hoping to change.