Connecting To MySQL server From PHP

Most application programs need to be connected to the database inorder to do some basic operations like saving and retrieving the user details / data.

In this video tutorial we illustrate, how we need to connect to MySQL server from PHP script.

Connecting to MySQL server
db.php

Include this file in all other files which needs to communicate with this database database_name

INSERT, SELECT, UPDATE, DELETE, DROP etc ..operations 
on the datbase.

Video Tutorial: Connecting To MySQL server From PHP

There are many variations of include:
include();
include_once();

require();
require_once();

require produces fatal error if the required file is not found. include produces warning when the file is not found.
include_once and require_once makes sure the files are included only once and not included multiple times in the same file.