In this scenario we will show how we can set easy two autocomplete fields in the same file.

For this purpose let suppose that the another input field is the product. The index file will look like this:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>My First PHP jqAutocomplete </title> 

<link rel="stylesheet" type="text/css" media="screen" href="themes/redmond/jquery-ui.custom.css" />
<script src="js/jquery.js" type="text/javascript"></script>
<script src="js/jquery-ui-1.8.1.custom.min.js" type="text/javascript"></script>

</head>
<body>

<form action="#">
   <label for="company">Company: </label>
   <input id="company" /> <br/>
   <label for="product">Product: </label>
   <input id="product" /> <br/>
   <input type="submit" name="submit" value="Submit" />
</form>

<?php include "autocomplete.php";?>
</body>
</html>

And the autocomplete.php file

<?php
require_once '../../../jq-config.php';
require_once ABSPATH."php/jqGridPdo.php";
require_once ABSPATH."php/jqUtils.php";
require_once ABSPATH."php/jqAutocomplete.php";

// Connection to the server
$conn = new PDO(DB_DSN,DB_USER,DB_PASSWORD);
// Tell the db that we use utf-8
$conn->query("SET NAMES utf8");

// create autocomplete instance
$ac = new jqAutocomplete($conn);
//write the select command
$ac->SelectCommand = "SELECT CompanyName FROM customers WHERE CompanyName LIKE ? ORDER BY CompanyName";
// set the source from where to get data. In this case it is the same file.
$ac->setSource("autocomplete.php");
$ac->renderAutocomplete("#company");

// Create the second instance
$ac2 = new jqAutocomplete($conn);
//write the select command for the products
$ac2->SelectCommand = "SELECT ProductName FROM products WHERE ProductName LIKE ? ORDER BY ProductName";
// set the source from where to get data. In this case it is the same file.
$ac2->setSource("autocomplete.php");
// Enjoy
$ac2->renderAutocomplete("#product");
?>