Untitled

<html>

<head>
	<title>Library management system</title>

	<link rel="stylesheet" type="text/css" href="heading.css" title="heading">

	<style>
		form
		{
			margin:2cm 8cm;
			padding: 2cm;
			color: white;
			font-size:23px;
		}

		.button
		{
			width : 4cm;
			height : 1.5cm;
    			background-color: #FFF000;
    			border: none;
			border-radius:4px;
    			color: #000080;
    			padding: 15px 32px;
    			text-align: center;
    			text-decoration: none;
    			display: inline-block;
    			font-size: 20px;
   			margin: 1cm 0cm;
    			cursor: pointer;
		}

		input
		{
			width : 8cm;
			height : 1cm;
			border: 1px solid #424949;
			border-radius:5px;
			font-size: 15px;
			color:#424949;
			margin : 0.5cm;
		}

		span
		{
			color: red;
			font-size:20px;
			text-align:center;
		}

	</style>

</head>

<body>

	<img src="logo.jpg" alt="logo" id="logo">
	<h1>PSG COLLEGE OF TECHNOLOGY</h1>
	<h2>LIBRARY MANAGEMENT SYSTEM</h2>

	<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">

		ADMIN ID &nbsp;&nbsp;&nbsp;<input type="text" name="admin_id" required><br>
		PASSWORD <input type="password" name="admin_pass" required><br>
		<center><input type="submit" class="button" value="LOGIN">
	<span>
	<?php

	if ($_SERVER["REQUEST_METHOD"] == "POST")
	{
		$a_id = $_POST['admin_id'];
		$a_pass = $_POST['admin_pass'];
		$user='root';
		$pass='';
		$db='rfid';
		$table='admin';
		$conn= new mysqli('localhost',$user,$pass,$db) or die('Unable to connect');
		$sql = "SELECT * FROM admin where id=1";
		$result = $conn->query($sql);
		if ($result->num_rows > 0)
		{
			while($row = $result->fetch_assoc())
			{
     				if($row["admin_id"]==$a_id && $row["password"]==$a_pass){header("location:home.php");}
				else{echo "<br>Incorrect admin id or password";}
			}
		}
		else
		{
     			echo "<br>cannot find the admin_id";
		}

		$conn->close();
	}

	?>
	</span>
	</form>

</body>

</html>