"For example, my impression is that Yahoo isnt really written in PHP - its written in C patched together using PHP." Yahoo! is a company, not a single applicat

"For example, my impression is that Yahoo isnt really written in PHP - its written in C patched together using PHP." Yahoo! is a company, not a single application. Not everything at Yahoo! is written in PHP, but the vast majority of Yahoo! properties do use PHP heavily on the frontend, and not just as a way of patching together C extensions.