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  1. <?php
  2. session_start();
  3. require('config.php');
  4.  
  5. if($_POST['submit'])
  6. {
  7.     $query="select * from tb_user where user_name='".addslashes($_POST['username'])."' and password='".addslashes($_POST['password'])."'";
  8.     $login=mysql_query($query);
  9.     if(mysql_num_rows($login)>0)
  10.     {
  11.         $userData=mysql_fetch_object($login);
  12.         $_SESSION['userid']=$userData->id;
  13.         $_SESSION['deptid']=$userData->dept_id;
  14.         $_SESSION['usertype']=$userData->user_type;
  15.         header("Location: index.php");
  16.     }
  17.     else
  18.     {
  19.         header("Location: login.php?msg=error");
  20.     }
  21. }
  22.  
  23. ?>
  24. <?php
  25. if($_GET['msg'])
  26.     {
  27.         echo '<span style="color:red">Invalid username or password</span>';
  28.     }
  29. ?>
  30.  
  31. <form method="post" onSubmit="return validate()">
  32. Username:<input type="text" name="username" value="" id="username"></input><div class=error id=nameError style="display:none">Enter Username</div><br>
  33. Password:<input type="password" name="password" value="" id="password"></input><div class=error id=passError style="display:none">Enter Password</div><br>
  34. <input type="submit" value="Login" name="submit"></input>
  35.  
  36. </form>
  37. <?php
  38.    
  39. ?>
  40. <script type="text/javascript">
  41. function validate()
  42. {
  43.     uname=document.getElementById("username").value
  44.     password=document.getElementById("password").value
  45.     hideallerrors();
  46.     if(uname=="")
  47.     {
  48.         document.getElementById("nameError").style.color="red";
  49.         document.getElementById("nameError").style.display = "inline";
  50.         document.getElementById("username").select();
  51.         document.getElementById("username").focus();
  52.         return false;
  53.     }
  54.     else if(password=="")
  55.     {
  56.            
  57.         document.getElementById("passError").style.color="red";
  58.         document.getElementById("passError").style.display = "inline";
  59.         document.getElementById("password").select();
  60.         document.getElementById("password").focus();
  61.         return false;
  62.     }
  63.     else
  64.     {
  65.         return true;
  66.     }
  67. }
  68. function hideallerrors()
  69. {
  70.         document.getElementById("nameError").style.display = "none";
  71.         document.getElementById("passError").style.display = "none";
  72.  
  73. }
  74. </script>
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