PHP is a popular general-purpose scripting language that is especially suited to web development.
Fast, flexible and pragmatic, PHP powers everything from your blog, as in this wordpress blog, to the most popular websites in the world.
When it comes to developing for the web, you could say PHP provides everything for us to build a complete web site. And it does certain things really well such as in accessing the backend database.
If you are at this point and wanted to learn PHP, I would suggest that you also brush up on database and have some basic understanding of database tables, querying using select statements, insert and deleting records in the database table.
I will create a MySQL tutorial at a later time.