sys2/changepassword.php at main · alfonso294/sys2 · GitHub

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<?php

  session_start();

  require 'connect.php';
  require 'functions.php';

  if(isset($_POST['update'])) {

    $oldpass = clean($_POST['oldpass']);
    $newpass = clean($_POST['newpass']);
    $confirmpass = clean($_POST['confirmpass']);

    $query = "SELECT password FROM students WHERE password = '$oldpass'";
    $result = mysqli_query($con, $query);

    if(mysqli_num_rows($result) > 0) {

      if($newpass == $confirmpass) {

        $query = "UPDATE students SET password = '$newpass' WHERE id='".$_SESSION['userid']."'";

        if($result = mysqli_query($con, $query)) {

          $_SESSION['prompt'] = "Password updated.";
          $_SESSION['password'] = $newpass;
          header("location:profile.php");
          exit;

        } else {

          die("Error with the query");

        }

      } else {

        $_SESSION['errprompt'] = "The new passwords you entered doesn't match.";;

      }

    } else {

      $_SESSION['errprompt'] = "You've entered a wrong old password.";

    }

  }

  if(isset($_SESSION['username'], $_SESSION['password'])) {

?>

<!DOCTYPE html>
<html>
<head>


	<title>Change Password - Student Information System</title>

	<link href="bootstrap.min.css" rel="stylesheet">
  <link href="main.css" rel="stylesheet">


</head>
<body>

  <?php include 'header.php'; ?>

  <section>

    <div class="container">
      <strong class="title">Change Password</strong>
    </div>


    <div class="edit-form box-left clearfix">

      <?php
        if(isset($_SESSION['errprompt'])) {
          showError();
        }
      ?>

      <form action="<?php echo htmlspecialchars($_SERVER['PHP_SELF']); ?>" method="POST">


        <div class="form-group">
          <label for="oldpass">Old Password</label>
          <input type="password" class="form-control" name="oldpass" placeholder="Old Password" required>
        </div>


        <div class="form-group">
          <label for="newpass">New Password</label>
          <input type="password" class="form-control" name="newpass" placeholder="New Password" required>
        </div>

        <div class="form-group">
          <label for="confirmpass">Confirm Password</label>
          <input type="password" class="form-control" name="confirmpass" placeholder="Confirm Password" required>
        </div>

        <div class="form-footer">
          <a href="profile.php">Go back</a>
          <input class="btn btn-primary" type="submit" name="update" value="Update Password">
        </div>


      </form>
    </div>

  </section>


	<script src="jquery-3.1.1.min.js"></script>
  <script src="bootstrap.min.js"></script>
	<script src="main.js"></script>
</body>
</html>

<?php

  } else {
    header("location:profile.php");
  }

  unset($_SESSION['errprompt']);
  mysqli_close($con);

?>