Zend is flourishing despite the recession - "the Q1 of 2009 has been our strongest quarter ever," says Suraski - and although PHP's enterprise market share is small compared to Java or .NET, it is growing. [...] What interests me is why this has happened. [...] More directly important though is that the community using PHP - the large area of non-paying users in Suraski's slide - has created a remarkable pool of resources on the Internet that is available to everyone, business users included. Non-commercial users are those most likely to share their knowledge, unfettered by concerns over business confidentiality or copyright.
He notes that, upon sitting down and developing a small PHP application, every problem he encountered was easily remedied by either a Google search, a message board or in the PHP manual - "I don't mean to belittle the extent of online resources available to Java or .NET developers, but would argue that PHP has the edge here."