PHP is the popular programming language behind many dynamic web sites. PHP5 is the major version of PHP that the PHP Group is actively maintaining. The previous version, PHP4, is still widely deployed, but is nearing the end of its useful life. The PHP Group has announced that active development of PHP4 will cease at the end of 2007, and even critical security updates will cease in early August 2008. Now is the time for PHP4-based web sites to migrate to PHP5. Quinn Interactive (QI) can audit your existing site and provide clear recommendations for appropriate updates, and provide professional services to implement the PHP5 upgrade.
PHP5 is largely backward-compatible with PHP4, but there are some backward-incompatible features and a new object-oriented-programming architecture. These and other technical changes may require changes to your PHP4 site. The changes might be as simple as changing a configuration option, or as complex as rewriting the dynamic code that drives part of your site. Now is the time to learn what changes your site will need to keep running in a PHP5 world. A thorough site audit will determine the extent of your PHP5 compatibility.