PHP 防抖和防重复提交技术：如何选择合适的方案

<?php
  
class Debounce
{
    private $callback;
    private $delay;
    private $timer;
  
    public function __construct($callback, $delay)
    {
        $this->callback = $callback;
        $this->delay = $delay;
    }
  
    public function debounce()
    {
        if($this->timer) {
            clearTimeout($this->timer);
        }
  
        $this->timer = setTimeout($this->callback, $this->delay);
    }
}
  
// 示例用法
$debounce = new Debounce(function() {
    // 执行请求的操作
}, 1000);
  
// 触发事件时调用 debounce() 方法
$debounce->debounce();
?>

<?php
  
class FORMToken
{
    private $token;
  
    public function __construct()
    {
        if(!isset($_SESSION['token'])) {
            $_SESSION['token'] = bin2hex(random_bytes(32));
        }
  
        $this->token = $_SESSION['token'];
    }
  
    public function generateToken()
    {
        return '<input type="hidden" name="token" value="' . $this->token . '">';
    }
  
    public function validateToken()
    {
        if(isset($_POST['token']) && $_POST['token'] === $this->token) {
            // 执行表单提交的操作
        } else {
            // 非法请求，给出错误提示
        }
    }
}
  
// 示例用法
$formToken = new FormToken();
echo $formToken->generateToken();
$formToken->validateToken();
?>