Auto complete text box with PHP, jQuery and MySql

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Creating database table


We need to create a table in our database before writing our script. I also add some data for this table. Import following SQL statement via phpMyAdmin or any other MySQL tool.

CREATE TABLE `tag` (
  `id` int(20) NOT NULL auto_increment,
  `name` varchar(50) NOT NULL,
  PRIMARY KEY  (`id`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=10 ;

INSERT INTO `tag` (`id`, `name`) VALUES
(1, 'php'),
(2, 'php frameword'),
(3, 'php tutorial'),
(4, 'jquery'),
(5, 'ajax'),
(6, 'mysql'),
(7, 'wordpress'),
(8, 'wordpress theme'),
(9, 'xml');



index.php




<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Auto Complete Input box</title>
<link rel="stylesheet" type="text/css" href="jquery.autocomplete.css" />
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="jquery.autocomplete.js"></script>
<script>
 $(document).ready(function(){
  $("#tag").autocomplete("autocomplete.php", {
        selectFirst: true
  });
 });
</script>
</head>
<body>
<label>Tag:</label>
<input name="tag" type="text" id="tag" size="20"/>
</body>
</html>






autocomplete.php

This file is called from our jquery script. This php script is easy to follow.



<?php
 $q=$_GET['q'];
 $my_data=mysql_real_escape_string($q);
 $mysqli=mysqli_connect('localhost','username','password','databasename') or die("Database Error");
 $sql="SELECT name FROM tag WHERE name LIKE '%$my_data%' ORDER BY name";
 $result = mysqli_query($mysqli,$sql) or die(mysqli_error());

 if($result)
 {
  while($row=mysqli_fetch_array($result))
  {
   echo $row['name']."\n";
  }
 }
?>




We have done. Run your project and type in your text box you will see following screenshot. 




By the way, I use the old jquery plug in this project. If you want to learn new thing, you can learn here and here. I create this tutorial because it is still useful and easy, although it is too old. I will also write about new jquery ui later.
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