Sunday, 22 September 2013

Simple Pagination using jquery,mySql and PHP



In this post we are going to learn about pagination using jQuery,MySQL and PHP.This is very simple
tutorial.It has four files which are as below.

(1) config.php file
    - For the database connection details.

(2) index.php file
    - Main file that display the result to the user.

(3) data.php file
    - File having code to fetch the data from the table.

(4) pagination.js file
    - Javascript file for acting as a data controller


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Create Database table


CREATE TABLE IF NOT EXISTS `users`(

 `id` int(10) NOT NULL AUTO_INCREMENT,

 `FirstName` varchar(200) NOT NULL,

 `Middlename` varchar(200) NOT NULL,

 `LastName` varchar(200) NOT NULL,

 PRIMARY KEY (`id`) )


config.php file

Change the values of hostname,username,password and database name

<?php
$mysql_hostname = "localhost"; 
$mysql_user = "root"; 
$mysql_password = ""; 

$mysql_database = "test"; 

$con = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Opps error! occurred");

mysql_select_db($mysql_database, $con) or die("Opps error! occurred");
?>

index.php file

Note : Here we are using select count(*) from table instead of select * from table
because Letting MySQL do the counting is SIGNIFICANTLY faster,as it only counts the entries rather than parsing all data,AND only returns a very small block of data :)


<?php
include('config.php');

$per_page = 3; 



//getting number of rows and calculating no of pages

$sql = "select count(*) from users";

$result = mysql_query($sql);

$count = mysql_fetch_row($result);

$pages = ceil($count[0]/$per_page);

?>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/
libs/jquery/1.3.0/jquery.min.js"></script>
<script type="text/javascript" src="pagination.js"></script>

<div id="content" ></div>
<table width="800px">
<tr><Td>
<ul id="pagination">
<?php
    //Show page links
    for($i=1; $i<=$pages; $i++)
    {
echo '<li id="'.$i.'">'.$i.'</li>';
    }
?>
             </ul>
   </Td>
     </tr></table>
<div id="loading" ></div>

data.php file

<?php
include('config.php');

$per_page = 3; 

if($_GET)

{

$page=$_GET['page'];

}



//getting table contents

$start = ($page-1)*$per_page;
$sql = "select * from users order by id limit $start,$per_page";
$rsd = mysql_query($sql);
?>

<table id="tbl">
<th><b>Id</b></th>
<th><b>FirstName</b></th>
<th><b>MiddleName</b></th>
<th><b>LastName</b></th>
<?php
while($row = mysql_fetch_array($rsd))
{
$id    = $row['id'];
$fname = $row['FirstName'];
$mname = $row['Middlename'];
$lname = $row['LastName'];
?>
<tr>
<td><?php echo $id; ?></td>
<td><?php echo $fname; ?></td>
<td><?php echo $mname; ?></td>
<td><?php echo $lname; ?></td>
</tr>
<?php
} //End while
?>
</table>

pagination.js file


$(document).ready(function(){

//Loading Image Display

function Display_Load()

{

   $("#loading").fadeIn(100);

$("#loading").html("<img src='loading.gif' />");

}

//Hide Loading Image

function Hide_Load()
{
$("#loading").fadeOut('slow');
};

   //Default Starting Page Results
   
$("#pagination li:first").css({'color' : '#FF0084','border' : 'none'});
$("#content").load("data.php?page=1", Hide_Load());

//Pagination Click
$("#pagination li").click(function(){
Display_Load();
//CSS Styles
$("#pagination li")
.css({'border' : 'solid #dddddd 1px'})
.css({'color' : '#0063DC'});
$(this)
.css({'color' : '#FF0084'})
.css({'border' : 'none'});

//Loading Data
var pageNum = this.id;
$("#content").load("data.php?page=" + pageNum, Hide_Load());
});
});



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