<?php
    session_start(); // Starting Session
    $error=''; // Variable To Store Error Message


    if (isset($_POST["hantar"]))
    {
        if (empty($_POST["username"]) || empty($_POST["password"])) {
            $error = "Username or Password is invaaaalid";
    }

    else
    {
    // Define $username and $password
    $username=$_POST['username'];
    $password=$_POST['password'];
    // Establishing Connection with Server by passing server_name, user_id and password as a parameter
    $connection = mysql_connect("localhost", "root", "admin1234");
    // To protect MySQL injection for Security purpose
    $username = stripslashes($username);
    $password = stripslashes($password);
    $username = mysql_real_escape_string($username);
    $password = mysql_real_escape_string($password);
    // Selecting Database
    $db = mysql_select_db("molexdb", $connection);
    // SQL query to fetch information of registerd users and finds user match.
    $query = mysql_query("select * from client where client_pass='$password' AND client_id='$username'", $connection);
    $rows = mysql_num_rows($query);
    if (!$query) {
    die(mysql_error());
}
    if ($rows == 1) {
    $_SESSION['login_user']=$username; // Initializing Session
    header("location: client-home.php"); // Redirecting To Other Page
    } else {
    $error = "Username or Password is invalid .";
    }
    mysql_close($connection); // Closing Connection
    }
    }
?>