On Reddit.com there's an interesting discussion going on about what's considered to be 'advanced skills' for a PHP developer to have.

I'm going to throw out here some potential advanced skills from off the top of my head - not at all a complete list.... PHP objects? PHP regular expressions? Frameworks? Security measures? Ability to use PHP to do cool things like recursive node walking of XML files? Use of third party libraries? Or would you add something else entirely? Just curious, because I'm looking for work and want to know if I can reasonably bill myself as having advanced PHP skills. Thanks for the input!

Responses cover a wide range of topics including:

• the Zend Certification(s)
• Clean, easy to understand coding practices
• How to effectively test your applications
• Addressing security concerns