PHP is a server-side scripting language. This concept is not used to designing pages with HTML and JavaScript. A server-side scripting language is similar to JavaScript in many ways, as they both allow you to embed little programs (scripts) into the HTML of a Web page. In executing, such scripts allow you to control what will actually appear in the browser window in some way more flexible that what is possible using straight HTML.
The key difference between JavaScript and PHP is that, while the Web browser interprets JavaScript once the Web page containing the script has been downloaded, server-side scripting languages like PHP are interpreted by the Web server before the page is even sent to the browser. Once interpreted, the PHP code is replaced in the Web page by the results of the script, so all the browser sees is a standard HTML file. The script is processed entirely by the server. Thus the designation: server-side scripting language.
MySQL databases have a standard setup. They are made up of a database, in which is contained tables. Each of these tables is quite separate and can have different fields etc. even though it is part of one database. Each table contains records which are made up of fields.
The process of setting up a MySQL database varies from host to host, you will however end up with a database name, a user name and a password. This information will be required to log in to the database.
If you have PHPMyAdmin (or a similar program) installed you can just go to it to log in with your user name and password. If not you must do all your database administration using PHP scripts.
PHP 6 and MySQL 6(pdf)
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