Question

我有以下代码以Wordpress插件页面的形式连接到AWS PHP SDK。尝试在最后一个函数（Call to a member function on a non-object）中使用$MTurk变量时，我收到bz_page_file_path错误。我尝试过各种各样的解决方案，比如$ global变量，但没有运气。我还确认，如果我将bz_page_file_path的内容移动到构造函数中，代码确实有效（因此它似乎可能是某种范围问题）。我该怎么做才能正确地将其传递给函数？

<?php

class BZ_NamePicker {

  // Constructor
  function __construct() {

    require_once dirname(__FILE__) . '/aws-autoloader.php';

    $MTurk = new Aws\MTurk\MTurkClient([
      ...
    ]);

    add_action( 'admin_menu', array( $this, 'bz_add_menu' ));
  }


  /* Action to load admin menu */

  function bz_add_menu() {

    add_menu_page('NamePicker', 'NamePicker', 'manage_options', 'namepicker-dashboard',
      array(__CLASS__, 'bz_page_file_path'),
      'dashicons-sticky','3');
  }

  /* Action to load content on admin webpage */

  function bz_page_file_path() {

    $accountBalance = $MTurk->getAccountBalance([]);
    echo $accountBalance['AvailableBalance'];
  }


}

new BZ_NamePicker();

Answer 1

<?php

class BZ_NamePicker {

  // Constructor
  function __construct() {
     global $MTurk;
    require_once dirname(__FILE__) . '/aws-autoloader.php';

    $MTurk = new Aws\MTurk\MTurkClient([
      ...
    ]);

    add_action( 'admin_menu', array( $this, 'bz_add_menu' ));
  }


  /* Action to load admin menu */

  function bz_add_menu() {

    add_menu_page('NamePicker', 'NamePicker', 'manage_options', 'namepicker-dashboard',
      array(__CLASS__, 'bz_page_file_path'),
      'dashicons-sticky','3');
  }

  /* Action to load content on admin webpage */

  function bz_page_file_path() {
    global $MTurk;
    $accountBalance = $MTurk->getAccountBalance([]);
    echo $accountBalance['AvailableBalance'];
  }


}

new BZ_NamePicker();

您需要在要访问它的函数中调用该类作为全局对象

在WP插件页面上调用非对象的成员函数

1 个答案: