Facebook PHP SDK 5：扩展 类

Question

我是 classes 的新手（更糟糕的是命名空间等）所以我知道必须创建 FacebookMyClass.php class 其中主要的 classes （autoload.php、Facebook.php、FacebookApp.php等），那么我的原型是：

<?php
// I guess
namespace Facebook;

// Do I must 'use' or extending other class(es)?
// use ;

class FacebookMyClass extends Facebook {

   // Do I have to "re-declare" parent's vars?
  private $my_private_var;
  public $my_public_var;
  private $access_token;

  // The main thing, I think, is how class is constructed

  // public function __construct(array $config = []) {
  public function __construct($id, $secret) {
    // This will work? Need parameters?
      parent::__construct();
  }

  public function accessParentProtectedVars($idfanpage) {
    // How can I call/link to Facebook object/request/response?
    $object = $this->get('/' . $idfanpage . '/albums?fields=name,id', $this->access_token);
  }

  private function getTokens($params = []) {
    // code...
    $this->access_token = '...';
  }

}
?>

问题是：如何扩展 Facebook\Facebook class(es)？

Answer 1

命名空间表示一个 class 或一组 classes 在给定项目中的位置。

扩展 class 意味着在您的 class.

范围内继承（获得访问权限）它的方法

举个例子，请记住，您可能需要对此进行调整：

<?php
// Imports the class Facebook from the Facebook namespace eg /Facebook/Facebook.php
use Facebook\Facebook;

class MyFacebookExtension extends Facebook {

    function __construct(array $config = []) {
        // The base class requires an array parameter, so we accept that and forward it, and then call the parent constructor
        parent::__construct($config);
    }

    // .. whatever methods you want to add .. You can also now access facebook() methods like $this->getclient() etc within this class.
}