Untitled

<?php
$name = null;
$email = null;
$username = null;
$pwd = null;
$pwd2 = null;
if (!empty($_POST)){
    ob_end_clean();
    $name = htmlspecialchars($_POST["name"]);
    $email = htmlspecialchars($_POST["email"]);
    $username = htmlspecialchars($_POST["username"]);
    $pwd = htmlspecialchars($_POST["pwd"]);
    $pwd2 = htmlspecialchars($_POST["pwd2"]);
    if ($pwd == $pwd2){
            echo "
            <!DOCTYPE html>
                <html>
                    <head>
                        <title>Week 5 Assignment</title>
                        <meta http-equiv='Content-Type' content='text/html;charset=utf-8'/>
                    </head>
                    <body>
                        <p>Welcome $name ! Please review the following information that you submitted:</p>
                        <p>You entered $email as your email.</p>
                        <p>You entered $username as your username.</p>
                        <p>You entered $pwd as your password.</p>
                    </body>
                </html>";

    }
    else {
        echo "
        <!DOCTYPE html>
            <html>
                <head>
                    <title>Week 5 Assignment</title>
                    <meta http-equiv='Content-Type' content='text/html;charset=utf-8'/>
                </head>
                <body>
                    <form action="; echo htmlspecialchars($_SERVER["PHP_SELF"]); echo" method="post">
                        <p> Name: <input type="text" name="name" value=$name></p>
                        <p>Email: <input type="email" name="email" value=$email></p>
                        <p>Username: <input type="text" name="username" value=$username></p>
                        <p>Password: <input type="password" name="pwd" minlength = 4></p>
                        <p>Retype Password: <input type="password" name="pwd2"></p>
                        <input type="submit">
                </form>
                <p>Passwords did not match</p>
                </body>
            </html>";
    }
}
elseif (empty($_POST)){
        echo "
        <!DOCTYPE html>
            <html>
                <head>
                    <title>Week 5 Assignment</title>
                    <meta http-equiv='Content-Type' content='text/html;charset=utf-8'/>
                </head>
                <body>
                    <form action="; echo htmlspecialchars($_SERVER["PHP_SELF"]); echo" method="post">
                        <p> Name: <input type="text" name="name"></p>
                        <p>Email: <input type="email" name="email"></p>
                        <p>Username: <input type="text" name="username"></p>
                        <p>Password: <input type="password" name="pwd" minlength = 4></p>
                        <p>Retype Password: <input type="password" name="pwd2"></p>
                        <input type="submit">
                </form>
                </body>
            </html>";
    }

?>