Sabtu, 05 Oktober 2013

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PHP Login script tutorial

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Overview

In this tutorial, we create 3 php files for testing our code.
1. main_login.php
2. checklogin.php
3. login_success.php

Steps
1. Create table "members" in database "test".
2. Create file main_login.php.
3. Create file checklogin.php.
4. Create file login_success.php.
5. Create file logout.php

STEP1: Create table "members"

CREATE TABLE `members` (
`id` int(4) NOT NULL auto_increment,
`username` varchar(65) NOT NULL default '',
`password` varchar(65) NOT NULL default '',
PRIMARY KEY (`id`)
) TYPE=MyISAM AUTO_INCREMENT=2 ;
--
-- Dumping data for table `members`
--
INSERT INTO `members` VALUES (1, 'john', '1234');


STEP2: Create file main_login.php

The first file we need to create is "main_login.php" which is a login form. ############### Code


<table width="300" border="0" align="center" cellpadding="0" cellspacing="1" bgcolor="#CCCCCC">
<tr>
<form name="form1" method="post" action="checklogin.php">
<td>
<table width="100%" border="0" cellpadding="3" cellspacing="1" bgcolor="#FFFFFF">
<tr>
<td colspan="3"><strong>Member Login </strong></td>
</tr>
<tr>
<td width="78">Username</td>
<td width="6">:</td>
<td width="294"><input name="myusername" type="text" id="myusername"></td>
</tr>
<tr>
<td>Password</td>
<td>:</td>
<td><input name="mypassword" type="text" id="mypassword"></td>
</tr>
<tr>
<td>&nbsp;</td>
<td>&nbsp;</td>
<td><input type="submit" name="Submit" value="Login"></td>
</tr>
</table>
</td>
</form>
</tr>
</table>
 

STEP3: Create file checklogin.php

We have a login form in step 2, when a user submit their username and password, PHP code in checklogin.php will check that this user exist in our database or not.

If user has the right username and password, then the code will register username and password in the session and redirect to "login_success.php". If username or password is wrong the system will show "Wrong Username or Password".

############### Code


<?php

$host="localhost";
// Host name
$username=""; // Mysql username
$password=""; // Mysql password
$db_name="test"; // Database name
$tbl_name="members"; // Table name

// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

// username and password sent from form
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];

// To protect MySQL injection (more detail about MySQL injection)
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$result=mysql_query($sql);

// Mysql_num_row is counting table row
$count=mysql_num_rows($result);

// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1){

// Register $myusername, $mypassword and redirect to file "login_success.php"
session_register("myusername");
session_register("mypassword");

header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}
?>


STEP4: Create file login_success.php

User can't view this page if the session is not registered.

############### Code

// Check if session is not registered, redirect back to main page.
// Put this code in first line of web page.
<?php
session_start();
if(!session_is_registered(myusername)){
header("location:main_login.php");
}
?>

<html>
<body>
Login Successful
</body>
</html>

STEP5: Create file Logout.php

If you want to logout, create this file. The code in this file will destroy the session.

// Put this code in first line of web page.
<?php
session_start();
session_destroy();
?>



For PHP5 User - checklogin.php

############### Code


<?php

ob_start();
$host="localhost";
// Host name
$username=""; // Mysql username
$password=""; // Mysql password
$db_name="test"; // Database name
$tbl_name="members"; // Table name

// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

// Define $myusername and $mypassword
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];

// To protect MySQL injection (more detail about MySQL injection)
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);
$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$result=mysql_query($sql);

// Mysql_num_row is counting table row
$count=mysql_num_rows($result);

// If result matched $myusername and $mypassword, table row must be 1 row
if($count==1){

// Register $myusername, $mypassword and redirect to file "login_success.php"
session_register("myusername");
session_register("mypassword");

header("location:login_success.php");
}
else {
echo "Wrong Username or Password";
}

ob_end_flush();
?>


Encrypting Password - Make your Login More Secure


*
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Cara Membobol Paswor Winrar

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1.Buka Notepad.

2.Pastekan kode berikut ke notepad.
 RAR registration data GoDesain Unlimited Company License UID=85809e6a0fde94d8fa95 6412212250fa95dc80957d3b78af9245c62d98787c33099debe20a 4d39faf3beaeaf7ba62060fce6cb5ffde62890079861be57638717 7131ced835ed65cc743d9777f2ea71a8e32c7e593cf66794343565 b41bcf56929486b8bcdac33d50ecf77399600ffeefe7a2041d7fe7 9f06594bd79c285c2c19d7d9a786d95f8a05e6141248ddb9d9830f 6977c3aab5c4e4e651e4813323e9eb20ac3fd8b7173262fc601959 515d0a89683aae2654bfd31328af3e331535ea2d85dc1402723610
3. Pada menu File di notepad pilih Save As...
4. Pada kolom file name isi ( rarreg.key ) Jangan yang lain.
5. Pada kolom Save as type ganti " All file "
6. Kolom encoding biarin aja.
7. Setelah itu klik Save.
8. Copy file tadi ke Folder Instalasi winrar yang ada di program file.
9. Setelah itu coba buka winrar sobat. Enjoy!!


 Sekian dulu Info nya, tunggu Informasi selanjutnya ya ! *
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