Posts

Home jQuery

jQuery AJAX Post Example with PHP and JSON

RELATED TUTORIAL: PHP, MySQL and AJAX CRUD Tutorial – Step by Step Guide!

Today I’m gonna give you some code examples on how you can post a form and JSON data using jQuery AJAX.

A PHP file will receive the posted data and print the response.

I think this is one of the most useful code when you’re coding with jQuery, especially if you’re building a web app with modules that deals with so many forms or post request in one page.

Why use jQuery for AJAX requests?

I think it is to make things easier, have shorter more readable code. You can see some code examples of doing an AJAX request without jQuery here and here.

As you can see on those links, some tasks include creating a catch for different browser XMLHttpRequest, opening the url, checking if the request is in ready state and setting the request header.

jQuery solves this by having a short, more readable syntax.

Let’s code!

Alright, now we’ll get straight to the code examples. We’re gonna have three example below, continue to read!

1. jQuery post form data using .ajax() method

This is a great way to show someone that you are now an AJAX programmer. Because of this .ajax() piece of code in your HTML page, you may now face the world with confidence and with a beautiful smile in your face.

Just kidding. But seriously, this piece of code is useful.

<html>
    <head>
        <title>jQuery post form data using .ajax() method by codeofaninja.com</title>
        
    </head>
<body>

<h1>jQuery post form data using .ajax() method</h1>
<div>Fill out and submit the form below to get response.</div>

<!-- our form -->   
<form id='userForm'>
    <div><input type='text' name='firstname' placeholder='Firstname' /></div>
    <div><input type='text' name='lastname' placeholder='Lastname' /></div>
    <div><input type='text' name='email' placeholder='Email' /></div>
    <div><input type='submit' value='Submit' /></div>
</form>

<!-- where the response will be displayed -->
<div id='response'></div>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js "></script>
<script>
$(document).ready(function(){
    $('#userForm').submit(function(){
    
        // show that something is loading
        $('#response').html("<b>Loading response...</b>");
        
        /*
         * 'post_receiver.php' - where you will pass the form data
         * $(this).serialize() - to easily read form data
         * function(data){... - data contains the response from post_receiver.php
         */
        $.ajax({
            type: 'POST',
            url: 'post_receiver.php', 
            data: $(this).serialize()
        })
        .done(function(data){
            
            // show the response
            $('#response').html(data);
            
        })
        .fail(function() {
        
            // just in case posting your form failed
            alert( "Posting failed." );
            
        });

        // to prevent refreshing the whole page page
        return false;

    });
});
</script>

</body>
</html>

2. jQuery post form data using .post() method

.post() method has a more descriptive syntax, it is a shorthand of .ajax() method above. See how it was commonly used with the code below:

<html>
    <head>
        <title>jQuery post form data using .post() method by codeofaninja.com</title>
        
    </head>
<body>

<h1>jQuery post form data using .post() method</h1>
<div>Fill out and submit the form below to get response.</div>

<!-- our form -->   
<form id='userForm'>
    <div><input type='text' name='firstname' placeholder='Firstname' /></div>
    <div><input type='text' name='lastname' placeholder='Lastname' /></div>
    <div><input type='text' name='email' placeholder='Email' /></div>
    <div><input type='submit' value='Submit' /></div>
</form>

<!-- where the response will be displayed -->
<div id='response'></div>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js "></script>
<script>
$(document).ready(function(){
    $('#userForm').submit(function(){
    
        // show that something is loading
        $('#response').html("<b>Loading response...</b>");
        
        /*
         * 'post_receiver.php' - where you will pass the form data
         * $(this).serialize() - to easily read form data
         * function(data){... - data contains the response from post_receiver.php
         */
        $.post('post_receiver.php', $(this).serialize(), function(data){
            
            // show the response
            $('#response').html(data);
            
        }).fail(function() {
        
            // just in case posting your form failed
            alert( "Posting failed." );
            
        });

        // to prevent refreshing the whole page page
        return false;

    });
});
</script>

</body>
</html>

3. jQuery post JSON data using .post() method

Sometimes you don’t want to post data from an HTML form. You can do it by creating a JSON string, and here’s how you’ll be able to post it.

<html>
    <head>
        <title>jQuery post JSON data using .post() method by codeofaninja.com</title>
        
    </head>
<body>

<h1>jQuery post JSON data using .post() method</h1>
<div>Click the button below to get response.</div>

<!-- our form -->   
<input type='button' value='Post JSON' id='postJson' />

<!-- where the response will be displayed -->
<div id='response'></div>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js "></script>
<script>
$(document).ready(function(){

    $('#postJson').click(function(){
    
        // show that something is loading
        $('#response').html("<b>Loading response...</b>");
        
        /*
         * 'post_receiver.php' - where you will pass the form data
         * $(this).serialize() - to easily read form data
         * function(data){... - data contains the response from post_receiver.php
         */
        $.post('post_receiver.php', { user_id: "143", username: "ninjazhai", website: "https://codeofaninja.com/" }, function(data){
            
            // show the response
            $('#response').html(data);
            
        }).fail(function() {
        
            // just in case posting your form failed
            alert( "Posting failed." );
            
        });

        // to prevent refreshing the whole page page
        return false;

    });
});
</script>

</body>
</html>

Posting a JSON string using the .ajax() method is also possible, you can just replace the serialize() part with your JSON string.

Posted Data

Where did the posted data go? To the file where you want the posted data to be processed! But in our example, we just print the posted data. post_receiver.php has the following code

<?php
echo "<pre>";
    print_r($_POST);
echo "</pre>";
?>

Download Source Code
You can download all the code used in this tutorial for only $9.99 $5.55!

If you want to learn how to create, read, update and delete data with AJAX, go ahead and learn from our AJAX CRUD Tutorial Using jQuery, JSON and PHP – Step by Step Guide!.

Related Tutorials

Thank you for learning our post about jQuery AJAX Post Example with PHP and JSON!

RELATED TUTORIAL: PHP, MySQL and AJAX CRUD Tutorial – Step by Step Guide!

Home Lists+

12 jQuery Questions and Answers You Should Be Reading on StackOverflow

Hi guys! Below are twelve of the jQuery related questions and answers on StackOverflow that I found very useful during development. I opted to compile them here because I feel good reading those brilliant questions and answers by coders from around the world. Enjoy!

  1. How would I know if an element is hidden?
  2. Sometimes you want some elements of your page to be visible, and if it is not visible, you want to tell the user about it. For example, a user must have a selection of data first before proceeding to new operation. If he has no selection (div is hidden), you can do a prompt that he must select something.

  3. How do I get selected text in select box?
  4. Ah, a drop-down list? Link # 2 above shows you how to get the user drop down list selection.

  5. How to redirect a page?
  6. Useful if you want to your users to see a page after an AJAX request, or you just want them to be redirected. I’ve written another example here, jQuery: Redirect onClick

  7. How would I know if a checkbox is checked or unchecked?
  8. For example, you want to enable a delete button if the user selected at least one data to delete, else, the delete button is disabled. I’ve written another example here: Check or Uncheck Checkboxes with jQuery And Get Selected with PHP

  9. How to select a child element?
  10. Teaches us how to select a child element and do it with faster performance (see the comment by Paul Irish).

  11. event.preventDefault() vs. return false
  12. I use return false; when I want to prevent a page refresh after clicking a submit button and doing an AJAX request.

  13. Example of using jQuery .closest() method.
  14. I use jQuery .closest() method on selecting an element within a table with several rows. I probably have to write an example in another blog post, ha!

  15. How would I know the existence of an element?
  16. Useful if you want to perform something if an element exists in your page. The faster way is using if ($(selector).length) {}

  17. How would I know which radio button is selected?
  18. This is how you will know if a user is a male or female, using jQuery!

  19. How to select multiple classes?
  20. Sometimes you want to to something to multiple classes at once. There’s another example here.

  21. How to select an element by its name, not by class or id?
  22. If you’re more familiar with an element’s name or don’t want to add a class or id name, you can use this cool technique.

  23. What if Google hosted jQuery is blocked?
  24. In some countries, Google’s domain name is banned. So if you are using a Google hosted jQuery library, you’re site won’t work. Link # 12 above shows you the fall back.

This can be the first part of the list, you can add more in the comments section below, or on our Facebook, Twitter or Google+!
And as always, thanks for reading!

Home jQuery

Working with Geolocation watchPosition() API

I’m going to share a working navigator.geolocation.watchPosition() code I used when I wanted the user to know his current location in real time (while he is walking or riding a vehicle).

This works while the user is using his Android device or any device with a browser that supports the Geolocation API.

We made this code with the help of Google Maps and jQuery.

Working with Geolocation watchPosition() API

Live Demo

Recommended to use a mobile device, you must allow it to get your current location, don’t worry, I’m not tracking you.

Code Example

Now here’s our index.html code.

<!DOCTYPE HTML>
<html>
<head>
    <title>Geolocation watchPosition() by The Code of a Ninja</title>
    
    <!-- for mobile view -->
    <meta content='width=device-width, initial-scale=1' name='viewport'/>
    
    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js" ></script>
    <script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3&sensor=false&language=en"></script>
    <script type="text/javascript">

        // you can specify the default lat long
        var map,
            currentPositionMarker,
            mapCenter = new google.maps.LatLng(14.668626, 121.24295),
            map;

        // change the zoom if you want
        function initializeMap()
        {
            map = new google.maps.Map(document.getElementById('map_canvas'), {
               zoom: 18,
               center: mapCenter,
               mapTypeId: google.maps.MapTypeId.ROADMAP
             });
        }

        function locError(error) {
            // tell the user if the current position could not be located
            alert("The current position could not be found!");
        }

        // current position of the user
        function setCurrentPosition(pos) {
            currentPositionMarker = new google.maps.Marker({
                map: map,
                position: new google.maps.LatLng(
                    pos.coords.latitude,
                    pos.coords.longitude
                ),
                title: "Current Position"
            });
            map.panTo(new google.maps.LatLng(
                    pos.coords.latitude,
                    pos.coords.longitude
                ));
        }

        function displayAndWatch(position) {
        
            // set current position
            setCurrentPosition(position);
            
            // watch position
            watchCurrentPosition();
        }

        function watchCurrentPosition() {
            var positionTimer = navigator.geolocation.watchPosition(
                function (position) {
                    setMarkerPosition(
                        currentPositionMarker,
                        position
                    );
                });
        }

        function setMarkerPosition(marker, position) {
            marker.setPosition(
                new google.maps.LatLng(
                    position.coords.latitude,
                    position.coords.longitude)
            );
        }

        function initLocationProcedure() {
            initializeMap();
            if (navigator.geolocation) {
                navigator.geolocation.getCurrentPosition(displayAndWatch, locError);
            } else {
                // tell the user if a browser doesn't support this amazing API
                alert("Your browser does not support the Geolocation API!");
            }
        }

        // initialize with a little help of jQuery
        $(document).ready(function() {
            initLocationProcedure();
        });
    </script>
</head>

<body style="margin:0; padding:0;">
    
    <!-- display the map here, you can changed the height or style -->
    <div id="map_canvas" style="height:25em; margin:0; padding:0;"></div>
</body>

</html>

In my case, I used this code with an Android WebView since it should be seen inside an app I’m working on, but as I said, this will work with any device with a browser.

If you have the same case as mine, you can also use this piece of android WebView code.

Just add:

webSettings.setGeolocationEnabled(true);

and inside your setWebChromeClient()…

@Override
public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
    
    super.onGeolocationPermissionsShowPrompt(origin, callback);
    callback.invoke(origin, true, false);
}

Download Source Code

You can download all the code used in this tutorial for only $9.99 $5.55!

Issues Encountered

If you were testing it with an Adroid Webview or Chrome Browser and seemed like it is not working, don’t lose hope. There is always hope. :)

Here’s the solution, uninstall the Chrome browser and then re-install it.

Related Source Code

Google Maps Geocoding Example with PHP - This tutorial is about a Google Maps geocoding example with PHP. We used some Google Maps JavaScript to show the geo-coded data on the map as well.

Further Reading

Geolocation API Specification
Geolocation.watchPosition() from Mozilla Developer Network

Don’t hesitate to post your comments regarding this Geolocation watchPosition() API example code.

Home CakePHP

CakePHP 2.x Pagination Tutorial: Helper, Conditions, Limit, Sorting and More!

CakePHP Pagination is one of the fastest thing you can code with this amazing framework. In this post I’m gonna show you how you can create a pagination script in matter of few minutes, or even seconds! Cool? Let’s get started.

This post is part of my CakePHP tutorial series, before you proceed to this, make sure you already installed your CakePHP poperly, know the CakePHP classes and naming conventions, and much better if you can code the CakePHP CRUD operations.

Video Demo

Here’s a video demo of what will be our code ouput.

Controller Code

On our controller, we are going to have a query the cakePHP way, we are going to have the following conditions:

  • Won’t include the record with an ID of 6 (‘conditions’ => array(‘User.id !=’ => ’6′))
  • We will limit to 3 records per page (‘limit’ => 3)
  • Order the result by ID (‘order’ => array(‘id’ => ‘desc’)) in descending order

So here’s the code that will be added in our UsersController.php

public function view() {

    // we prepare our query, the cakephp way!
    $this->paginate = array(
        'conditions' => array('User.id !=' => '6'),
        'limit' => 3,
        'order' => array('id' => 'desc')
    );
    
    // we are using the 'User' model
    $users = $this->paginate('User');
    
    // pass the value to our view.ctp
    $this->set('users', $users);
    
}

The $users variable gives us an array that look like this:

cakephp-pagination

View Code

On our view.ctp, our data is presented with a table. The table header contains the paginator sort() method for sorting the data using any fields you want (and you won’t have to create another query!)

The $this->Paginator object (pagination helper) also has lots of methods for paging, please see the ‘pagination section’ on the code block below.

Also we used the <div class=’paging’> which uses the CakePHP generic CSS. You can change that if you want and be creative with your paging UI design.

<?php
// so we use the paginator object the shorter way.
// instead of using '$this->Paginator' everytime, we'll use '$paginator'
$paginator = $this->Paginator;

if($users){

    //creating our table
    echo "<table>";

        // our table header, we can sort the data user the paginator sort() method!
        echo "<tr>";
        
            // in the sort method, ther first parameter is the same as the column name in our table
            // the second parameter is the header label we want to display in the view
            echo "<th>" . $paginator->sort('id', 'ID') . "</th>";
            echo "<th>" . $paginator->sort('firstname', 'Firstname') . "</th>";
            echo "<th>" . $paginator->sort('lastname', 'Lastname') . "</th>";
            echo "<th>" . $paginator->sort('username', 'Username') . "</th>";
        echo "</tr>";
        
        // loop through the user's records
        foreach( $users as $user ){
            echo "<tr>";
                echo "<td>{$user['User']['id']}</td>";
                echo "<td>{$user['User']['firstname']}</td>";
                echo "<td>{$user['User']['lastname']}</td>";
                echo "<td>{$user['User']['username']}</td>";
            echo "</tr>";
        }
        
    echo "</table>";

    // pagination section
    echo "<div class='paging'>";

        // the 'first' page button
        echo $paginator->first("First");
        
        // 'prev' page button, 
        // we can check using the paginator hasPrev() method if there's a previous page
        // save with the 'next' page button
        if($paginator->hasPrev()){
            echo $paginator->prev("Prev");
        }
        
        // the 'number' page buttons
        echo $paginator->numbers(array('modulus' => 2));
        
        // for the 'next' button
        if($paginator->hasNext()){
            echo $paginator->next("Next");
        }
        
        // the 'last' page button
        echo $paginator->last("Last");
    
    echo "</div>";
    
}

// tell the user there's no records found
else{
    echo "No users found.";
}
?>

Thanks for reading this tutorial code for pagination in CakePHP!

Home jQuery

jQuery: Sum TextBox Values As You Type

A friend asked me how to sum all TextBox value as he type the numbers?

Here’s a quick answer to that:

Give all your TextBoxes a class name and use the jQuery ‘keyup()’ and ‘each()’ methods to compute the sum.

HTML - a table where the product name and price TextBox is found.

<table>
    <tr>
        <td>Product Name</td>
        <td>Price</td>
    </tr>
    
    <tr>
        <td>MOBILE POWER BANK (2800MAH)</td>
        <td><input type='text' class='price' /></td>
    </tr>
    
    <tr>
        <td>DISNEY NECK REST PILLOW (CHIP)</td>
        <td><input type='text' class='price' /></td>
    </tr>
    
    <tr>
        <td></td>
        <td><input type='text' id='totalPrice' disabled /></td>
    </tr>
</table>

jQuery - methods we used include keyup, each and val. Read comments on code.

<script>
// we used jQuery 'keyup' to trigger the computation as the user type
$('.price').keyup(function () {

    // initialize the sum (total price) to zero
    var sum = 0;
    
    // we use jQuery each() to loop through all the textbox with 'price' class
    // and compute the sum for each loop
    $('.price').each(function() {
        sum += Number($(this).val());
    });
    
    // set the computed value to 'totalPrice' textbox
    $('#totalPrice').val(sum);
    
});
</script>

Complete Code:

<html>
    <head>
        <title>jQuery Sum Demo</title>
    </head>
<body>

<table>
    <tr>
        <td>Product Name</td>
        <td>Price</td>
    </tr>
    
    <tr>
        <td>MOBILE POWER BANK (2800MAH)</td>
        <td><input type='text' class='price' /></td>
    </tr>
    
    <tr>
        <td>DISNEY NECK REST PILLOW (CHIP)</td>
        <td><input type='text' class='price' /></td>
    </tr>
    
    <tr>
        <td></td>
        <td><input type='text' id='totalPrice' disabled /></td>
    </tr>
</table>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js "></script>

<script>
// we used jQuery 'keyup' to trigger the computation as the user type
$('.price').keyup(function () {

    // initialize the sum (total price) to zero
    var sum = 0;
    
    // we use jQuery each() to loop through all the textbox with 'price' class
    // and compute the sum for each loop
    $('.price').each(function() {
        sum += Number($(this).val());
    });
    
    // set the computed value to 'totalPrice' textbox
    $('#totalPrice').val(sum);
    
});
</script>

</body>
</html>

This post will be updated if any variation occurs. :)

Download Source Code
You can download all the code used in this tutorial for only $9.99 $5.55!

Related Tutorials

Thank you for learning from our post about Sum TextBox Values As You Type in jQuery.

Home Lists+

CSS3 Rotate Image On Hover

Have you seen our logo on the upper left corner? Try to hover on it, it will rotate 360 degrees. Looks cool? In this quick post, I’m going to show you how I did that using CSS3.

CSS:

#linkWrapRotator img {
     -webkit-transition: all 1s ease-in-out;
     -moz-transition: all 1s ease-in-out; 
     -o-transition: all 1s ease-in-out; 
     -ms-transition: all 1s ease-in-out; 
}

#linkWrapRotator img:hover { 
     -webkit-transform: rotate(360deg); 
     -moz-transform: rotate(360deg); 
     -o-transform: rotate(360deg);
     -ms-transform: rotate(360deg); 
}

HTML used:

<a href='https://www.codeofaninja.com/' id='linkWrapRotator'>
     <img src='https://lh6.googleusercontent.com/-Q0p2PeGBLLg/UTr5zOvggSI/AAAAAAAAEeM/SrYuO-cYWQU/s205/ninja-icon200x200.png' />
</a>

You can also do the rotation in other degrees, not on 360, just change the value of “rotate” in our code. For example, you can do rotate(180deg);

Just play with it!

Now that was fast and easy, I know there are other ways to do it, like using jQuery. There would also be some variations in doing this, such as not having a "a" tag.

Please share your own beautiful work, experience and cases on the comment section below!

Home jQuery

Simple PHP Pagination Script to Handle Your Growing Data

PHP Pagination is another very important feature when building any web application.

When you grow your data, it must not be displayed on a single page – it can cause a browser hang or very long vertical scroll-bar, so in short, it is not good for the user experience.

Simple PHP Pagination Script to Handle Your Growing Data

Contents:
1.0 Video Demo
2.0 Pagination in 5 Easy Steps
2.1 Retrieving the Records
2.2 First and Previous Page
2.3 Number Page Buttons
2.4 Next and Last Page Buttons
2.5 User Input Page Number
3.0 Download Source Code

1.0 Video Demo

Our final output.

2.0 Pagination in 5 Easy Steps

We are going the build this PHP paging script, in just 5 easy steps, see 3.1 to 3.5 below:

2.1 Retrieve the Records (Step 1)

This code will connect us to a MySQL database. Create "libs" folder. Open that folder. Create "db_connect.php" file and place the following code.

<?php
$host = "CHANGE_TO_YOUR_HOST";
$db_name = "CHANGE_TO_YOUR_DATABASE_NAME";
$username = "CHANGE_TO_YOUR_DATABASE_USERNAME";
$password = "CHANGE_TO_YOUR_DATABASE_PASSWORD";

try {
	$con = new PDO("mysql:host={$host};dbname={$db_name}", $username, $password);
}

//to handle connection error
catch(PDOException $exception){
	echo "Connection error: " . $exception->getMessage();
}
?>

Next, we will show the records in an HTML table.

<?php
// include for database connection
include 'libs/db_connect.php';

// page is the current page, if there's nothing set, default is page 1
$page = isset($_GET['page']) ? $_GET['page'] : 1;

// set records or rows of data per page
$recordsPerPage = 3;

// calculate for the query LIMIT clause
$fromRecordNum = ($recordsPerPage * $page) - $recordsPerPage;

// select all data
$query = "SELECT 
            id, firstname, lastname, username 
        FROM 
            users 
        ORDER BY 
            id desc
        LIMIT 
            {$fromRecordNum}, {$recordsPerPage}";
            
            /*
            page and its LIMIT clause looks like:
            1 = 0, 5
            2 = 5,10
            3 = 10,15
            4 = 15, 20
            5 = 20, 25
            */
        
$stmt = $con->prepare( $query );
$stmt->execute();

//this is how to get number of rows returned
$num = $stmt->rowCount();

//check if more than 0 record found
if($num>0){

    //start table
    echo "<table id='tfhover' class='tftable' border='1'>";
    
        //creating our table heading
        echo "<tr>";
            echo "<th>Firstname</th>";
            echo "<th>Lastname</th>";
            echo "<th>Username</th>";
        echo "</tr>";
        
        //retrieve our table contents
        //fetch() is faster than fetchAll()
        //http://stackoverflow.com/questions/2770630/pdofetchall-vs-pdofetch-in-a-loop
        while ($row = $stmt->fetch(PDO::FETCH_ASSOC)){
        
            //extract row, this will make $row['firstname'] to just $firstname only
            extract($row);
            
            //creating new table row per record
            echo "<tr>";
                echo "<td>{$firstname}</td>";
                echo "<td>{$lastname}</td>";
                echo "<td>{$username}</td>";
            echo "</tr>";
        }
        
    echo "</table>";//end table

    // ***** Paging section will be here ***** 
}

2.2 First and Previous Page Buttons (Step 2)

The code below will show the "First" and "Previous" page buttons.

// ***** for 'first' and 'previous' pages
if($page>1){
    // ********** show the first page
    echo "<a href='" . $_SERVER['PHP_SELF'] . "' title='Go to the first page.' class='customBtn'>";
        echo "<span style='margin:0 .5em;'> << </span>";
    echo "</a>";
    
    // ********** show the previous page
    $prev_page = $page - 1;
    echo "<a href='" . $_SERVER['PHP_SELF'] 
            . "?page={$prev_page}' title='Previous page is {$prev_page}.' class='customBtn'>";
        echo "<span style='margin:0 .5em;'> < </span>";
    echo "</a>";
    
}
?>

2.3 Number Page Buttons (Step 3)

We are going to have some simple calculations here. The goal of this code is to display some page numbers that users can click.

<?php
// ********** show the number paging

// find out total pages
$query = "SELECT COUNT(*) as total_rows FROM users";
$stmt = $con->prepare( $query );
$stmt->execute();

$row = $stmt->fetch(PDO::FETCH_ASSOC);
$total_rows = $row['total_rows'];

$total_pages = ceil($total_rows / $recordsPerPage);

// range of num links to show
$range = 2;

// display links to 'range of pages' around 'current page'
$initial_num = $page - $range;
$condition_limit_num = ($page + $range)  + 1;

for ($x=$initial_num; $x<$condition_limit_num; $x++) {
    
    // be sure '$x is greater than 0' AND 'less than or equal to the $total_pages'
    if (($x > 0) && ($x <= $total_pages)) {
    
        // current page
        if ($x == $page) {
            echo "<span class='customBtn' style='background:red;'>$x</span>";
        } 
        
        // not current page
        else {
            echo " <a href='{$_SERVER['PHP_SELF']}?page=$x' class='customBtn'>$x</a> ";
        }
    }
}

?>

2.4 Next and Last Page Buttons (Step 4)

This will show the buttons with characters “>” and “>>” (meaning ‘next’ and ‘last’)

<?php
// ***** for 'next' and 'last' pages
if($page<$total_pages){
    // ********** show the next page
    $next_page = $page + 1;
    echo "<a href='" . $_SERVER['PHP_SELF'] . "?page={$next_page}' title='Next page is {$next_page}.' class='customBtn'>";
        echo "<span style='margin:0 .5em;'> > </span>";
    echo "</a>";
    
    // ********** show the last page
    echo "<a href='" . $_SERVER['PHP_SELF'] . "?page={$total_pages}' title='Last page is {$total_pages}.' class='customBtn'>";
        echo "<span style='margin:0 .5em;'> >> </span>";
    echo "</a>";
}
?>

2.5 Enter a Page Number (Step 5)

This will show a text-box where the user can enter a page number and submit it by hitting the enter key or clicking the ‘Go’ button.

<?php
// ***** allow user to enter page number
echo "<form action='" . $_SERVER['PHP_SELF'] . "' method='GET'>";
    echo "Go to page: ";
    echo "<input type='text' name='page' size='1' />";
    echo "<input type='submit' value='Go' class='customBtn' />";
echo "</form>"; 
?>

3.0 Download Source Code Examples

You can download all the code used in this tutorial for only $9.99 $5.55!

If you want to paginate with jQuery, here’s a post I made: Pagination with jQuery and PHP

Thank you for learning from our post about: Simple PHP Pagination Script!

Home jQuery

Scroll Page to Top Using jQuery

There are some friends who asked me how I did this "back to top" feature of our blog. For a live demo, try to scroll down this page, you will see an "up arrow" image on the lower right corner. When you click it, it will get you to the top of this page.

Code of a Ninja Scroll Page To Top

For me this is another cool feature for any website that make use of long vertical scroll bar. The user can instantly go the the top of the page easily, just in one click! So here's the HTML, CSS and jQuery code I used:

HTML - this will make our 'up arrow' image shown.

<a href="#" class="ninjaUp" title='Back to top...'>Scroll</a>

CSS - our arrow image looks a little blurred, but when you hover your mouse on it, it will be emphasized, thanks to CSS opacity!

.ninjaUp{
width:128px;
height:128px;
opacity:0.3;
position:fixed;
bottom:10px;
right:10px;
display:none;
text-indent:-9999px;
background: url('https://lh6.googleusercontent.com/-jqrSBwq8jN8/UYSas7Y9_eI/AAAAAAAAFGA/AESC5Kc64-I/s128/1367662569_upload_arrow_up.png') no-repeat;
}

.ninjaUp:hover{
opacity:0.6;
}

jQuery - this will detect scrolling, do the fade effect and scroll to top animation!

<script type="text/javascript">
$(document).ready(function(){

// detect scroll
$(window).scroll(function(){

// if the user scrolled the page more that 200 pixels, show the 'up' arrow image
if ($(this).scrollTop() > 200) {
$('.ninjaUp').fadeIn();
}

// hide the 'up' arrow image
else {
$('.ninjaUp').fadeOut();
}

});

// when the user clicks on the 'up' arrow image, it will scroll the page to the top
// it will occur in a second (see 1000 value below)
// you can change that value if you want to make the scroll faster or slower
$('.ninjaUp').click(function(){
$("html, body").animate({ scrollTop: 0}, 1000);
return false;
});

});
</script>

How about if I don't what to "scroll" it. Easy, you just have to make value to "0", so the code will be like this:

$('.ninjaUp').click(function(){
$("html, body").animate({ scrollTop: 0}, 0);
return false;
});

It is beautiful! Thanks to jQuery functions like jQuery scroll and animate and CSS Opacity!