This post for PHP beginners Login Page Example. I want to explain creating database, posting form values, storing the session value and destroy the session. It's is very useful and simple.
Database
MySQL admin table columns id, username, passcode.
CREATE TABLE admin
(
id INT PRIMARY KEY AUTO_INCREMENT,
username VARCHAR(30) UNIQUE,
passcode VARCHAR(30)
);
(
id INT PRIMARY KEY AUTO_INCREMENT,
username VARCHAR(30) UNIQUE,
passcode VARCHAR(30)
);
Config.php
Database configuration file.
<?php
$mysql_hostname = "hostname";$mysql_user = "username";
$mysql_password = "password";
$mysql_database = "database";
$bd = mysql_connect($mysql_hostname, $mysql_user, $mysql_password)
or die("Opps some thing went wrong");
mysql_select_db($mysql_database, $bd) or die("Opps some thing went wrong");
?>
Login.php
Contains PHP and HTML code.
>?php
include("config.php");session_start();
if($_SERVER["REQUEST_METHOD"] == "POST")
{
// username and password sent from Form
$myusername=addslashes($_POST['username']); $mypassword=addslashes($_POST['password']);
$sql="SELECT id FROM admin WHERE username='$myusername' and passcode='$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");
$_SESSION['login_user']=$myusername;
header("location: welcome.php");
}
else
{
$error="Your Login Name or Password is invalid";
}
}
?>
<form action="" method="post">
<label>UserName :</label>
<input type="text" name="username"/><br />
<label>Password :</label>
<input type="password" name="password"/><br/>
<input type="submit" value=" Submit "/><br />
</form>
lock.php
Session verification. If no session value page redirect to login.php
<?php
include('config.php');session_start();
$user_check=$_SESSION['login_user'];
$ses_sql=mysql_query("select username from admin where username='$user_check' ");
$row=mysql_fetch_array($ses_sql);
$login_session=$row['username'];
if(!isset($login_session))
{
header("Location: login.php");
}
?>
welcome.php
<?php
include('lock.php');
?>
<body>
<h1>Welcome <?php echo $login_session; ?></h1>
</body>
logout.php
SignOut Destroy the session value.
<?php
session_start();if(session_destroy())
{
header("Location: login.php");
}
?>
Parthiv Patel
Bhaishri Info Solution
Sr. PHP Developer
Limdi Chowk, AT PO. Nar, Di. Anand
Nar, Gujarat
388150
India
pparthiv2412@gmail.com
7383343029
DOB: 12/24/1986
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