login sceen php

7/31/2019 Login Sceen Php

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TUGAS LOGIN REGISTRATION

Step 1 MySQL

Pertama membuat tabel yang akan memegang semua pendaftaran

table.sql

01 --

02 -- Table structure for table `tz_members`

03 --

04

05 CREATETABLE`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;

Perhatikan bahwa kita telah mendefinisikan id sebagai integerdengan AUTO_INCREMENT - itu secara otomatis ditetapkan kesetiapanggota situs. Juga, kita telah mendefinisikan user sebagai kunci unik - tidak adadua pengguna dengan username yang sama diperbolehkan.Kami kemudian menggunakan ini dalam pendaftaran untuk menentukanapakah username telah diambil. Setelah Anda membuat tabel, jangan lupa untukmengisikredensial database Anda dalam connect.php sehingga Anda dapatmenjalankan demo di server Anda sendiri.

Step 2 XHTML

001

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003


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004 005

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007 The Sliding jQuery Panel

008 A register/login solution

009You are free to use this login and registration system inyou sites!

010 A Big Thanks

011

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

012

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022 Member Login

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024

032

033 Username:

034

035 Password:

036


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/>

037 Remember me

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048 049 Not a member yet? Sign Up!

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051

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069 Username:

070


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071 Email:

072

073 A password will be e-mailed to you.

074

075 076

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085 Members panel

086

You can put member-only data here

087 View a special member page

088

- or -

089 Log off

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101 102

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106 Hello !


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107 |

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110 Close Panel

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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 is loggedin the site, which allows us to show specific content to site members. We will cover it in detail in amoment.

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

01

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05 06 A Cool Login System

07 Easy registration management with PHP & jQuery

08

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This is a ...

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Nothing special here. Lets continue with the PHP backend.


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The login system

Step 3 PHP

It is time to convert the form into a complete registration and login system. To achieve it, we will

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

view source

print?01 define('INCLUDE_CHECK',true);

02

03 require'connect.php';

04 require'functions.php';

05

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

07

08 session_name('tzLogin');

09 // Starting the session

10

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

12 // Making the cookie live for 2 weeks

13

14 session_start();

15

16if($_SESSION['id'] && !isset($_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();
http://tutorialzine.com/2009/10/cool-login-system-php-jquery/#viewSourcehttp://tutorialzine.com/2009/10/cool-login-system-php-jquery/#printSourcehttp://tutorialzine.com/2009/10/cool-login-system-php-jquery/#abouthttp://tutorialzine.com/2009/10/cool-login-system-php-jquery/#viewSourcehttp://tutorialzine.com/2009/10/cool-login-system-php-jquery/#printSourcehttp://tutorialzine.com/2009/10/cool-login-system-php-jquery/#about


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22 session_destroy();

23

24 // Destroy the session

25 }

26

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

28 {

29 $_SESSION= array();

30 session_destroy();

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

32 exit;

33 }

34

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

36 {

37 // Checking whether the Login form has been submitted

38

39 $err= array();

40 // Will hold our errors

41

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

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

44

45 if(!count($err))

46 {

47 $_POST['username'] = mysql_real_escape_string($_POST['username']);

48 $_POST['password'] = mysql_real_escape_string($_POST['password']);

49 $_POST['rememberMe'] = (int)$_POST['rememberMe'];

50

51 // Escaping all input data

52

53$row= mysql_fetch_assoc(mysql_query("SELECT id,usr FROM tz_members

WHERE usr='{$_POST['username']}' AND pass='".md5($_POST['password'])."'"));

54

55 if($row['usr'])

56 {


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57 // If everything is OK login

58

59 $_SESSION['usr']=$row['usr'];

60 $_SESSION['id'] = $row['id'];

61 $_SESSION['rememberMe'] = $_POST['rememberMe'];

62

63 // Store some data in the session

64

65 setcookie('tzRemember',$_POST['rememberMe']);

66 // We create the tzRemember cookie

67 }

68 else$err[]='Wrong username and/or password!';69 }

70 71 if($err)

72 $_SESSION['msg']['login-err'] = implode('
',$err);

73 // Save the error messages in the session

74


76 exit;

77 }

Here the tzRemember cookie acts as a control whether we should log-off users that have notmarked the remember me checkbox. If the cookie is not present (due to browser restart) and thevisitor has not checked the remember me option, we destroy the session.

The session itself is kept alive for two weeks (as set by session_set_cookie_params ).

Lets see the second part ofdemo.php.

view sourceprint?01 elseif($_POST['submit']=='Register')

02 {

03 // If the Register form has been submitted

04 $err= array();

05

06 if(strlen($_POST['username'])32)

07 {


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08 $err[]='Your username must be between 3 and 32 characters!';

09 }

10

11 if(preg_match('/[^a-z0-9\-\_\.]+/i',$_POST['username']))

12 {

13 $err[]='Your username contains invalid characters!';

14 }

15

16 if(!checkEmail($_POST['email']))

17 {

18 $err[]='Your email is not valid!';

19 }

20

21 if(!count($err))

22 {

23 // If there are no errors

24$pass=

substr(md5($_SERVER['REMOTE_ADDR'].microtime().rand(1,100000)),0,6);

25 // Generate a random password

26

27 $_POST['email'] = mysql_real_escape_string($_POST['email']);

28 $_POST['username'] = mysql_real_escape_string($_POST['username']);

29 // Escape the input data

30

31 mysql_query(" INSERT INTO tz_members(usr,pass,email,regIP,dt)

32 VALUES(

33 '".$_POST['username']."',

34 '".md5($pass)."',

35 '".$_POST['email']."',

36 '".$_SERVER['REMOTE_ADDR']."',

37 NOW()38 )");

39

40 if(mysql_affected_rows($link)==1)

41 {

42 send_mail( '[email protected]',


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43 $_POST['email'],

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 }

55


57 exit;

58 }

59

60 $script= '';61 if($_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 $err array, 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, thedata is sent all over again. This could become problematic as it could lead to a double registrationsand unnecessary server load.


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

But as we use $_SESSION to store all the encountered errors it is important that we unset these

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 PHP code)which shows the panel on page load, so that the messages are visible to the user.

Now lets take a look at the CSS.

The registration / login system

Step 4 CSS

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

demo.css

view sourceprint?01 body,h1,h2,h3,p,quote,small,form,input,ul,li,ol,label{

02 /* The reset rules */

03 margin:0px;

04 padding:0px;

05 }

06

07 body{

08 color:#555555;

09 font-size:13px;

10 background: #eeeeee;11 font-family:Arial, Helvetica, sans-serif;

12 width: 100%;

13 }

14

15 h1{


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16 font-size:28px;

17 font-weight:bold;

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

19 letter-spacing:1px;

20 }

21

22 h2{

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 }

37

38 .clear{

39 clear:both;

40 }

41

42 #main{

43 width:800px;

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

45 margin:60pxauto;

46 }

47

48 .container{

49 margin-top:20px;

50

51 background:#FFFFFF;


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52 border:1pxsolid#E0E0E0;53 padding:15px;

54

55 /* Rounded corners */

56 -moz-border-radius:20px;57 -khtml-border-radius: 20px;

58 -webkit-border-radius: 20px;

59 border-radius:20px;

60 }

61

62 .err{

63 color:red;

64 }

65

66 .success{

67 color:#00CC00;

68 }

69

70 a, a:visited {

71 color:#00BBFF;

72 text-decoration:none;

73 outline:none;

74 }

75

76 a:hover{

77 text-decoration:underline;

78 }

79

80 .tutorial-info{

81 text-align:center;

82 padding:10px;

83 }

Step 5 jQuery

The sliding panel comes with its own jQuery files.


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demo.php

view sourceprint?

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First we include the jQuery library from Googles CDN. Later comes a special fix for IE6 PNGtransparency issues and lastly the panels script is included.

At the bottom of the page is the $script variable it 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.

You are free to built upon this code and modify it any way you see fit.
http://tutorialzine.com/2009/10/cool-login-system-php-jquery/#viewSourcehttp://tutorialzine.com/2009/10/cool-login-system-php-jquery/#printSourcehttp://tutorialzine.com/2009/10/cool-login-system-php-jquery/#abouthttp://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.jshttp://24ways.org/2007/supersleight-transparent-png-in-ie6http://tutorialzine.com/2009/10/cool-login-system-php-jquery/#viewSourcehttp://tutorialzine.com/2009/10/cool-login-system-php-jquery/#printSourcehttp://tutorialzine.com/2009/10/cool-login-system-php-jquery/#abouthttp://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.jshttp://24ways.org/2007/supersleight-transparent-png-in-ie6

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