About Zend Certification?

Due to the hight demand for PHP developers these days, there are lots of people who are learning PHP in order to secure a job. In such a case if we need an edge over other PHP programmers it is always better to have a certification and the ZEND certification is the only one and the best available for a PHP programmer. For doing ZEND, they recommend at least 6 months of hands on experience in PHP. For preparing for ZEND examination phparchitect, a PHP magazine, publishes study guides. I think this book is available as PDF in some site. But they are copyrighted materials so downloading and using it is illegal.