In this new post to the PHPClasses.org blog, Manuel Lemos looks at the PHP Certification Exam - whether it's worth it, how can you take it and includes an interview with a ZCE, Mauricio Garcia about his experience with it.
Although I am certain that having a PHP certification is not the only way to demonstrate that a PHP developer is really qualified, I am sure that it helps hinting employers about his skills, and so become more open to negotiate better salaries. Having a PHP certification also helps a developer stand out from the crowd of developers that apply to a job but do not have any certification.
In the interview Manuel talks with Mauricio (a Brazilian PHP developer) about whether or not he feels the certification is worth it, how a developer can take it and what they need to do to prepare for it as well as a mention of a book that might help.
Michael Kimsal has also posted some of his own thoughts on the certification issue (and of the comments made during the interview).