A PHP developer is responsible for writing server-side web application logic. PHP developers usually develop back-end components, connect the application with the other (often third-party) web services, and support the front-end developers by integrating their work with the application. They are also often required to develop and integrate plugins for certain popular frameworks.
Writing a good job description and advertisement for a PHP developer requires attention to detail. When you are looking for an advanced PHP web developer, posting a generic web developer description in your job ad will bring numerous applications from people who may have little knowledge about good programming practices.