reg.php

<?php
if (isset($_POST['name'])
    && isset($_POST['password'])
        && isset($_POST['password_two']))
    {

    $name = $_POST['name'];
    $name = stripslashes($name);
    $name = trim($name);
    $name = htmlspecialchars($name);

    $password = $_POST['password'];
    $password = stripslashes($password);
    $password = trim($password);
    $password = htmlspecialchars($password);

    $password_two = $_POST['password_two'];
    $password_two = stripslashes($password_two);
    $password_two = trim($password_two);
    $password_two = htmlspecialchars($password_two);

    if ($password != $password_two) {
        echo 'Error: Password mismatch!';
        echo "<script>setTimeout('location=document.location.href', 3000 )</script>";
        die();
    }

    include 'a_api.php';

    $result = $proxy->createAccountEx($name, $password, AccessLevel::User(), AccountStatus::Active(), $name, null);

    if ($result->isOk()) {
            echo " Account successfully created!";
            echo "<script>setTimeout('location=document.location.href', 3000 )</script>";
    } else {
            echo " Error: The account already exists!";
            echo "<script>setTimeout('location=document.location.href', 3000 )</script>";
            return false;
        }
    } else {
?>
<form method="post" style="max-width:500px;margin:auto">
<h2>Register Form</h2>

<div class="input-container">
    <i class="fa fa-user icon"></i>
    <input placeholder="Username" class="input-field" type="text" name="name" pattern="[A-Za-z0-9]{4,16}" required />
  </div>


  <div class="input-container">
    <i class="fa fa-key icon"></i>
    <input placeholder="Password" class="input-field" type="password" name="password" pattern="[A-Za-z0-9]{4,16}" required />
  </div>

  <div class="input-container">
    <i class="fa fa-key icon"></i>
    <input placeholder="Confirm Password" class="input-field" type="password" name="password_two" pattern="[A-Za-z0-9]{4,16}" required />
  </div>

  <div class="input-container">
  <button type="submit" class="btn" value="Registration">Register</button>
  </div>

    <p><a href="?change">Change Password Form!</a></p>
</form>
<?php
}
?>