Login Page (login.php)

 <?php

      include 'conn.php';
    ?>
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Bookstore</title>
    <link rel="stylesheet" href="css/bootstrap.min.css">
</head>
<body>
    <!-- contact section -->
<section id="contact" class="py-5 bg-warning mt-3">
  <div class="container">
    <!-- title contact -->
     <!-- title -->
     <div class="row">
      <div class="col text-center ">
       <h1 class="display-4 text-uppercase mb-0  ">
        <strong>User Login </strong>
       </h1>
        <div class="title-underline bg-danger"></div>
        <!-- <p class="mt-2 text-capitalize text-muted">Lorem ipsum dolor sit amet.</p> -->
      </div>
    </div>
    <!-- end of title -->
    <div class="row  justify-content-center">
      <div class="col-md-6 my-3">
        <div class="card card-body bg-secondary">
          <!-- title -->
          <div class="card-title text-center text-white">
            <h1 class="text-capitalize">Sign In here</h1>
            <!-- <p>Message Us</p> -->
          </div>
          <!-- end of title -->
          <form action="" method="POST" >
            <!-- simple form -->
            <div class="form-group mt-3">
              <input type="text" class="form-control" name="u_name" placeholder="Username">
            </div>
            <!-- email -->
            <div class="form-group mt-3">
              <input type="password" class="form-control  " name="u_pass" placeholder="password">
            </div>
           
           
              <!-- append -->
             
            <button type="submit" name="u_login" class="btn btn-outline-dark btn-block text-uppercase">submit</button>
          </form>
        </div>
      </div>

    <script src="js/jquery.min.js"></script>
    <script src="js/bootstrap.min.js"></script>
    <?php
        if(isset($_POST['u_login'])) {
           
            $uname = $_POST['u_name'];
            $upass = ($_POST['u_pass']) ;
            $sql = "SELECT *FROM users WHERE uname ='$uname'";
            $result = mysqli_query($conn ,$sql);
            if(mysqli_num_rows($result)>0) {
                while ($user = mysqli_fetch_assoc($result)){
                    if($uname == $user['uname'] && $upass ==$user['pass']){
                         $_SESSION['u_name'] = $uname;
                      // header('Location:dash.php');
                      echo "<script type = \"text/javascript\">
                      alert(\"login Succesfully \");
                      window.location = (\"dash.php\")
                      </script>";
                    }else{
                        echo "<script>alert('wrong password or Username');</script>";
                    }

                }

            } else{
                echo 'invalid username';
            }
        }  

    ?>
</body>
</html>

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