Delete login.php

login.php

-<?php
-	include('conn.php');
-	session_start();
-	function check_input($data) {
-		$data = trim($data);
-		$data = stripslashes($data);
-		$data = htmlspecialchars($data);
-		return $data;
-	}
-	
-	if ($_SERVER["REQUEST_METHOD"] == "POST") {
-		$username=check_input($_POST['username']);
-		
-		if (!preg_match("/^[a-zA-Z0-9_]*$/",$username)) {
-			$_SESSION['msg'] = "Username should not contain space and special characters!"; 
-			header('location: index.php');
-		}
-		else{
-			
-		$fusername=$username;
-		
-		$password = check_input($_POST["password"]);
-		$fpassword=md5($password);
-		
-		$query=mysqli_query($conn,"select * from `user` where username='$fusername' and password='$fpassword'");
-		
-		if(mysqli_num_rows($query)==0){
-			$_SESSION['msg'] = "Login Failed, Invalid Input!";
-			header('location: index.php');
-		}
-		else{
-			
-			$row=mysqli_fetch_array($query);
-			if ($row['access']==1){
-				$_SESSION['id']=$row['userid'];
-				?>
-				<script>
-					window.alert('Login Success, Welcome Admin!');
-					window.location.href='admin/';
-				</script>
-				<?php
-			}
-			else{
-				$_SESSION['id']=$row['userid'];
-				?>
-				<script>
-					window.alert('Login Success, Welcome User!');
-					window.location.href='user/';
-				</script>
-				<?php
-			}
-		}
-		
-		}
-	}
-?>
\ No newline at end of file