我如何让这个php表单工作？

<!-- index.html -->
<form action="process.php" method="POST">
  <label for="name">姓名：</label>
  <input type="text" id="name" name="name" required>
  <br>
  <label for="email">邮箱：</label>
  <input type="email" id="email" name="email" required>
  <br>
  <input type="submit" value="提交">
</form>

<!-- process.php -->
<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
  $name = $_POST["name"];
  $email = $_POST["email"];

  // 表单验证和数据处理逻辑
  if (validateForm($name, $email)) {
    saveToDatabase($name, $email);
    echo "表单提交成功！";
  } else {
    echo "表单验证失败，请检查输入！";
  }
}

function validateForm($name, $email) {
  // 进行表单字段验证的逻辑
  // 返回true或false
}

function saveToDatabase($name, $email) {
  // 将表单数据存储到数据库的逻辑
}
?>