Introduction IN MUET EXAM

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Introduction

Today we are making a cool & simple login / registration system. It will give you the abilityto easily create a member-only area on your site and provide an easy registration process.

It is going to be PHP driven and store all the registrations into a MySQL database.

To add the needed flair, we are using the amazingsliding jQuery panel,developed byWeb-kreation.

Step 1MySQL

First we have to create the table that will hold all the registrations. This code is available intable.sql.

table.sql

01--

02-- Table structure for table `tz_members`

03--

04

05CREATETABLE`tz_members` (

06 ìd` int(11) NOTNULLauto_increment,

07 ùsr` varchar(32) collateutf8_unicode_ci NOTNULLdefault'',

08 `pass` varchar(32) collateutf8_unicode_ci NOTNULLdefault'',

09 èmail` varchar(255) collateutf8_unicode_ci NOTNULLdefault'',10 `regIP` varchar(15) collateutf8_unicode_ci NOTNULLdefault'',

11 `dt` datetime NOTNULLdefault'0000-00-00 00:00:00',

12 PRIMARYKEY (ìd`),

13 UNIQUEKEYùsr` (ùsr`)

14) ENGINE=MyISAM DEFAULTCHARSET=utf8 COLLATE=utf8_unicode_ci;

Notice that weve defined the id as an integer with auto_incrementit is automaticallyassigned to every site member. Also, weve defined usras an unique keyno two userswith the same usernames are allowed.

We later use this in the registration to determine whether the username has been taken.

After you create the table, do not forget to fill in your database credentials in connect.phpsoyou can run the demo on your own server.

Step 2XHTML

First, we have to incorporate Web-kreations form into our page.

demo.php

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http://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jquery/http://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jquery/http://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jquery/http://web-kreation.com/http://web-kreation.com/http://web-kreation.com/http://web-kreation.com/http://web-kreation.com/http://web-kreation.com/http://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jquery/


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002

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007The Sliding jQuery Panel

008A register/login solution

009You are free to use this login and registration systemin you sites!

010A Big Thanks

011

This tutorial was built on top of Web-Kreation's amazing slidingpanel.

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013014

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022Member Login

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033Username:

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035Password:

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037 Remember me

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040041
http://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jqueryhttp://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jqueryhttp://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jqueryhttp://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jqueryhttp://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jqueryhttp://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jqueryhttp://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jqueryhttp://web-kreation.com/index.php/tutorials/nice-clean-sliding-login-panel-built-with-jquery


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084

085Members panel

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You can put member-only data here

087View a special member page

088

- or -

089Log off

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098099

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106Hello !

107| 108

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110ClosePanel

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At several places in this code, there are some PHP operators that check whether$_SESSION['usr']or $_SESSION['id']are defined. This is true only if the page visitor islogged in the site, which allows us to show specific content to site members. We will cover itin detail in a moment.

After the form, we put the rest of the page.

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06A Cool Login System

07Easy registration management with PHP & jQuery

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This is a ...

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Nothing special here. Lets continue with the PHP backend.

The login system

Step 3PHP

It is time to convert the form into a complete registration and login system. To achieve it, wewill need more than the usual amount of PHP. Ill divide the code into two parts.

If you plan to add more code, it would be a good idea to split it into several files which areincluded when needed. This aids the development of large projects and allows code reuse indifferent parts of a site.

But lets see how weve done it here.

demo.php

01define('INCLUDE_CHECK',true); 02


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03require'connect.php';

04require'functions.php';

05

06// Those two files can be included only if INCLUDE_CHECK is defined

0708session_name('tzLogin');

09// Starting the session

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11session_set_cookie_params(2*7*24*60*60);

12// Making the cookie live for 2 weeks

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14session_start();

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if($_SESSION['id'] && !isset($_COOKIE['tzRemember'])

&& !$_SESSION['rememberMe'])17{

18// If you are logged in, but you don't have the tzRemember cookie

(browser restart)

19 // and you have not checked the rememberMe checkbox:

20

21 $_SESSION= array();

22 session_destroy();

23

24 // Destroy the session

25}

26

27if(isset($_GET['logoff']))

28{

29 $_SESSION= array();

30 session_destroy();

31 header("Location: demo.php");

32 exit;

33}

3435if($_POST['submit']=='Login')

36{

37 // Checking whether the Login form has been submitted

38

39 $err= array();

40 // Will hold our errors

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42 if(!$_POST['username'] || !$_POST['password'])

43 $err[] = 'All the fields must be filled in!';

44


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44 'Registration System Demo - Your New Password',

45 'Your password is: '.$pass);

46$_SESSION['msg']['reg-success']='We sent you an

email with your new password!';

47 }

48 else$err[]='This username is already taken!';49 }

50

51 if(count($err))

52 {

53 $_SESSION['msg']['reg-err'] = implode('
',$err);

54 }

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56 header("Location: demo.php");

57 exit;58}

59

60$script= '';

61if($_SESSION['msg'])

62{

63 // The script below shows the sliding panel on page load

64 $script= '

65

66 $(function(){

67 $("div#panel").show(); 68 $("#toggle a").toggle();

69 });

70 ';

71}

We store all the encountered errors in an $errarray, which is later assigned to a $_SESSIONvariable. This allows it to be accessible after a browser redirect.

You may have noticed on some sites, that when you submit a form and later refresh the page,

the data is sent all over again. This could become problematic as it could lead to a doubleregistrations and unnecessary server load.

We use the header function to prevent this, by redirecting the browser to the same page. Thisstarts a fresh view of the page, without the browser associating it with a form submit. Theresult is that, on page refresh, no data is sent.

But as we use $_SESSIONto store all the encountered errors it is important that we unsetthese variables, once we show the errors to the user. Otherwise they will be shown on every

page view (the highlighted lines on the XHTML part of the tutorial).

Also notice how we create an additional script (lines 60-70 of the second part of the PHPcode) which shows the panel on page load, so that the messages are visible to the user.


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Now lets take a look at the CSS.

The registration / login system

Step 4CSS

The sliding panel comes with its own style sheet. This means we are only left with creatingthe page styles.

demo.css

01body,h1,h2,h3,p,quote,small,form,input,ul,li,ol,label{ 02 /* The reset rules */

03 margin:0px;

04 padding:0px;

05}

06

07body{

08 color:#555555;

09 font-size:13px;

10 background: #eeeeee;

11 font-family:Arial, Helvetica, sans-serif;12 width: 100%;


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13}

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15h1{

16 font-size:28px;

17 font-weight:bold;

18 font-family:"Trebuchet MS",Arial, Helvetica, sans-serif;

19 letter-spacing:1px;

20}

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22h2{

23 font-family:"Arial Narrow",Arial,Helvetica,sans-serif;

24 font-size:10px;

25 font-weight:normal;

26 letter-spacing:1px;

27 padding-left:2px; 28 text-transform:uppercase;

29 white-space:nowrap;

30 margin-top:4px;

31 color:#888888;

32}

33

34#main p{

35 padding-bottom:8px;

36}

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38.clear{

39 clear:both;

40}

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42#main{

43 width:800px;

44 /* Centering it in the middle of the page */

45 margin:60pxauto;

46}

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48.container{

49 margin-top:20px;

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51 background:#FFFFFF;

52 border:1pxsolid#E0E0E0;

53 padding:15px;

54

55 /* Rounded corners */

56 -moz-border-radius:20px;


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57 -khtml-border-radius: 20px;

58 -webkit-border-radius: 20px;

59 border-radius:20px;

60}

61

62.err{

63 color:red;

64}

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66.success{

67 color:#00CC00;

68}

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70a, a:visited {

71 color:#00BBFF;72 text-decoration:none;

73 outline:none;

74}

75

76a:hover{

77 text-decoration:underline;

78}

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80.tutorial-info{

81 text-align:center;

82 padding:10px;

83}

Step 5jQuery

The sliding panel comes with its own jQuery files.

demo.php

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http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.jshttp://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.jshttp://24ways.org/2007/supersleight-transparent-png-in-ie6http://24ways.org/2007/supersleight-transparent-png-in-ie6http://24ways.org/2007/supersleight-transparent-png-in-ie6http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js


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First we include the jQuery library from Googles CDN. Later comes a special fix for IE6

PNG transparency issues and lastly the panels script is included.

At the bottom of the page is the $script variableit shows the panel on page load if needed.

With this our cool login system is complete!

Conclusion

Today we learned how to use a fantastic form component and turn it into a functional log in /registration system.

Introduction IN MUET EXAM

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