OOP PHP - 获取表单帖子

Hello I'm watching a tutorial about OOP PHP "How to make login form". And I can't understand how the form post was gotten from this code.

您好我正在观看有关OOP PHP“如何制作登录表单”的教程。我无法理解表格帖子是如何从这段代码中获得的。

input.php

class input
{
  public static function exists($type = 'post')
  {
    switch ($type)
    {
        case 'post':
            return (!empty($_POST)) ? true : false;
        break;
        case 'get':
            return (!empty($_GET)) ? true : false;
        break;
        default:
            return false;
        break;
    }
  }
}

if (input::exists())
{
  //the submit button was clicked
}

So I will be happy if someone explain how does that work and how can i specify it to a specific form. Like this.

如果有人解释这是如何工作的，我将很高兴，如何将其指定为特定形式。喜欢这个。

if ($_POST['specific submit name'])
{
  // the specific submit button was clicked.
}

1 个解决方案

#1

This function:

这个功能：

public static function exists($type = 'post')
  {
    switch ($type)
    {
        case 'post':
            return (!empty($_POST)) ? true : false;
        break;
        case 'get':
            return (!empty($_GET)) ? true : false;
        break;
        default:
            return false;
        break;
    }
  }

checks if the $_POST or $_GET superglobal arrays are empty. So let's say that you need to check if a POST requests has reached your page. You call input::exists('post'); That means the first case is true and this part of the code will be executed:

检查$ _POST或$ _GET超全局数组是否为空。因此，假设您需要检查POST请求是否已到达您的页面。你调用input :: exists（'post'）;这意味着第一种情况是正确的，这部分代码将被执行：

return (!empty($_POST)) ? true : false;

return（！empty（$ _ POST））？真假;

This code returns true if $_POST is not empty, which practically means there's data in it or false if it is empty. Truth be told, this statement could be more easily written like this:

如果$ _POST不为空，则此代码返回true，这实际上意味着其中包含数据，如果为空，则返回false。说实话，这句话可以更容易地写成：

return !empty($_POST);

return！empty（$ _ POST）;

The if/else logic is pretty reduntant as is most of that code. To check if a particular value is in the $_POST array you can use isset.

if / else逻辑与大多数代码一样非常简洁。要检查特定值是否在$ _POST数组中，您可以使用isset。

So let's say you submit a form or send an AJAX request and one of the fields has a name of 'foo', you can check if 'foo' exists in $_POST like this:

因此，假设您提交表单或发送一个AJAX请求，其中一个字段的名称为'foo'，您可以检查$ _POST中是否存在'foo'，如下所示：

if(isset($_POST['foo'])
{
    //do something with foo
}

As you can see there are simpler ways to check if $_POST is populated and with what values. As I said above I consider the input class and the exists method reduntant code. You could use this tutorial just for learning what OOP is but I wouldn't rely on it

正如您所看到的，有更简单的方法可以检查是否填充了$ _POST以及具有什么值。如上所述，我考虑输入类和存在方法reduntant代码。你可以使用本教程来学习OOP是什么，但我不会依赖它

#1