Php Joomla模块中的变量

我的头撞到墙上了。。。。我正在制作一个简单的joomla模块，在helper.php中，我无法分配表单中发布的值

<?php

// no direct access
defined('_JEXEC') or die('Restricted access');

class modReservationHelper {
    public $name;
    public $email;
    public $message;
    public $comment;

    protected function  __construct() {
        $this->name = $_POST['fullname'];
        $this->email = $_POST['email'];
        $this->message = $_POST['message'];
        $this->comment = $_POST['comment'];
    }

     function validateForm() {
        echo $this->name;   //The output is always 0
        echo $this->email+"</br>";//The output is always 0
        echo $this->message;//The output is always 0


        //When I try
        echo $_POST['comment']; // Is correct
        }   
    }

?>

我也尝试过不使用具有相同零效果的构造函数：(

---

整个过程是从“mod_wreservation.php”调用的，我调用modReservationHelper:：validateForm（）；

您正在以静态方式调用该类。因此类中的$this将不是modReservationHelper的对象

在mod_wreservation.php中使用它的正确方法是

$helperObj = new modReservationHelper(); // your choice will work (__counstruct) with this
$helperObj->validateForm();

第二选择

$helperObj = new modReservationHelper();
$helperObj->setValue();
$helperObj->validateForm();

而课堂将是

<?php

// no direct access
defined('_JEXEC') or die('Restricted access');

class modReservationHelper {
    public $name;
    public $email;
    public $message;
    public $comment;


    function  setValues() {
        $this->name = $_POST['fullname'];
        $this->email = $_POST['email'];
        $this->message = $_POST['message'];
        $this->comment = $_POST['comment'];
    }

     function validateForm() {            
        echo $this->name;   //The output is always 0
        echo $this->email+"</br>";//The output is always 0
        echo $this->message;//The output is always 0

        //When I try
        echo $_POST['comment']; // Is correct
        }   
    }

?>

---

如何调用类modReservationHelper的函数？我得到的第一个选项：致命错误：从上下文“JModuleHelper”oops调用受保护的modReservationHelper:：u construct（）。我没有注意到。将此函数u construct公开。

<?php

// no direct access
defined('_JEXEC') or die('Restricted access');

class modReservationHelper {
    public $name;
    public $email;
    public $message;
    public $comment;


    function  setValues() {
        $this->name = $_POST['fullname'];
        $this->email = $_POST['email'];
        $this->message = $_POST['message'];
        $this->comment = $_POST['comment'];
    }

     function validateForm() {            
        echo $this->name;   //The output is always 0
        echo $this->email+"</br>";//The output is always 0
        echo $this->message;//The output is always 0

        //When I try
        echo $_POST['comment']; // Is correct
        }   
    }

?>

$post = JRequest::get('post');
$helperObj = new modReservationHelper();
$helperObj->setValue($post);
$helperObj->validateForm();