The combination of PHP and MySQL is the most convenient approach to dynamic,
database-driven web design, holding its own in the face of challenges from integrated
frameworks—such as Ruby on Rails—that are harder to learn. Due to its open source
roots (unlike the competing Microsoft .NET Framework), it is free to implement and
is therefore an extremely popular option for web development.
Any would-be developer on a Unix/Linux or even a Windows/Apache platform will
need to master these technologies. And, combined with the partner technologies of
standards like Facebook, Twitter, and Gmail.