How to filter data from database according to client name & date wise in PHP

Create connection file in php

connection file is used to connect DB with web application.

//                                          Code                                         //

<?php

define ("db-host", "localhost");

define ("user-name", "root");

define ("password", "");

define ("database", "database name");

$link=mysql_connect("localhost","root","") or die ("errror");

$db=mysql_select_db("database name", $link)or die ("errror");

?>