The graphic below displays the market share of each PHP version as on march 2008. The blue graph represents the sum of all preceding versions.
PHP 5.2.5 now is the most popular version of PHP followed closely by PHP 4.4.8 and 4.4.7. This information can be helpful if you are planning on creating an Open source project or are thinking of moving past the version 4 mark in your professional career but are hesitant regarding the version 5 support on servers. Read More