Zend PHP 5 Certification was a professional certification program for PHP developers. It was created by Zend Technologies, the company behind the PHP programming language, in collaboration with Pearson VUE, a provider of computer-based testing services.

To obtain the Zend PHP 5 Certification, developers had to pass a written exam that tested their knowledge of PHP 5 and its core functions, syntax, and features. The exam covered a wide range of topics, including variables and data types, arrays, functions, objects, security, and error handling.

The Zend PHP 5 Certification was designed to recognize the skills and knowledge of PHP developers, and to help employers identify qualified candidates for PHP development positions. It was widely recognized as a benchmark for PHP development skills and was considered a valuable asset for professionals in the field.

However, Zend PHP 5 Certification is no longer available as PHP has evolved significantly since the release of PHP 5, and newer versions of the language have been released. The latest version of PHP is PHP 8, which was released in November 2020.