To connect to a database in PHP, you use the connect function from the module that is specific to your database brand. For example, to connect to a MySQL database located on your Web server, you ...

The transactions needed to store information in the database require Structured Query Language (SQL) commands placed inside a PHP script.

Establish Connection Before you can extract any information from your MySQL database, you have to establish a connection to it. PHP's mysql_connect function does this.