Php code example for Secure login

Posted By educratsweb.comTechnology 🗓 Wednesday September 19 2018 👁 354


Php code example for Secure login

Php code example for login 

 

 

Login.php

Create a login.php file where you take input user name and password as shown the figure.

<?php

include("config.php");

session_start();

if($_SERVER["REQUEST_METHOD"] == "POST")

{

// username and password sent from form

$myusername=addslashes($_POST['adminuser']);

$mypassword=addslashes($_POST['adminpass']);

$sql="SELECT * FROM admin WHERE adminuser='$myusername' and adminpass='$mypassword'";

$result=mysql_query($sql);

$row=mysql_fetch_array($result);

$active=$row['active'];

$count=mysql_num_rows($result);

// If result matched $myusername and $mypassword, table row must be 1 row

if($count==1)

{

session_register("myusername");

$_SESSION['login_adminuser']=$myusername;

header("location: index.php");

}

else

{

$error="Your Login Name or Password is invalid";

}

}

?>

<h2>Login</h2>

<form action="" method="post">

  <label>UserName  : </label>

  <br />

  <input type="text" name="adminuser" id="txtbox"/>

  <br />

  <br />

  <label>Password  : </label>

  <br />

  <input type="password" name="adminpass" class="box" id="txtbox" />

  <br/>

  <br />

  <input type="submit" value=" Submit " id="btn"/>

  <br />

</form>

<div style="font-size:11px; color:#cc0000; margin-top:10px"><?php echo $error; ?></div>

</div>

 

Config.php

 

Create a configuration file through you connect the mysql databse or any other configuration.

<?php

$mysql_hostname = "localhost";

$mysql_user = "your username ";

$mysql_password = "your password";

$mysql_database = "Your database";

$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password) or die("Opps some thing went wrong");

mysql_select_db($mysql_database, $bd) or die("Opps some thing went wrong");

?>

 

lock.php

 

<?php

include('config.php');

session_start();

$user_check=$_SESSION['login_adminuser'];

//$ses_sql=mysql_query("select empuser from employeelogin where empuser='$user_check' ");

//$row=mysql_fetch_array($ses_sql);

$login_admin_session=$user_check;

if(!isset($login_admin_session))

{

header("Location: login.php");

}

?>

 

index.php

 

after successful login this is your secure page.

<?php

include('lock.php');

?>

<h2>WELCOME in Login Portal</h2> | <a href=’logout.php’>Logo out</a>

 

logout.php

after successful login this is your secure page.

<?php

session_start();

if(session_destroy())

{

header("Location: login.php");

}

?>

 

 

Database Structure

Table name : admin

CREATE TABLE `admin` (

  `adminuser` varchar(20) NOT NULL default '',

  `adminpass` varchar(20) NOT NULL default '',

  PRIMARY KEY  (`adminuser`),

  UNIQUE KEY `adminpass` (`adminpass`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

 

 

This is a sample login page. You can modify or use it for your project.

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