changePwd.php

<?php
require "header.php";
?>
<?php
# Error messages
$msgOld = $msgNew = $msgNew2 = "";

// if (isset($_GET["error"])) {
//     $error = $_GET["error"];
//     switch ($error) {
//         case "empty":
//             $msgOld = "Insert the last used password.";
//             $msgNew = "Choose a new password.";
//             $msgNew2 = "Repeat to confirm the new password.";
//             break;
//     }
// }
?>
<h1>Change Password:</h1>

<form action="includes/changePwd.inc.php" method="post">
    <input type="password" name="oldPwd" placeholder="Old Password"><span class="error"> <?php echo $msgOld ?></span> <br>
    <input type="password" name="newPwd" placeholder="New Password"><span class="error"> <?php echo $msgNew ?></span><br>
    <input type="password" name="newPwd2" placeholder="Confirm New Password"><span class="error"> <?php echo $msgNew2 ?></span><br>
    <button type="submit" name="change-submit">Change it.</button>
</form>

<?php
require "footer.php";
?>