login msgs changed.

login.php

@@ -1,13 +1,33 @@
 <?php
-    require_once "connect.php";
+    require_once "./connect.php";
 
-    $sql="select userId from user where userId = '".$_POST['username']."' and password = '".md5($_POST['password'])."'";
-    $result=mysqli_query($con,$sql) or die($con->error);
-
-    if($result->num_rows==1){
-        echo "<script>
-        alert('Logged in');        
-        window.location = './fill.html';
-            </script>";
+    // print_r($_POST);
+    $userID = $_POST['username'];
+    $pass = md5($_POST['password']);
+    $sql="select * from user where userId = '".$userID."' and password = '".$pass."' ";
+    $result=mysqli_query($con,$sql);
+
+    if($result){
+        if(mysqli_num_rows($result)==1){
+            echo "
+                <script>
+                    alert('Logged in');        
+                    location.replace('fill.html');
+                </script>
+            ";
+        }else{
+            echo "
+                <script>
+                    alert('Invalid Credentials!!!!');
+                    location.replace('index.html');
+                </script>
+            ";
+        }
+    }else{
+        echo "
+            <script>
+                alert('Some Error Occured while loggin in!!!!);
+                location.replace('index.html');
+            </script>
+        ";
     }
-?>