另请参见here 再想一想，这个问题是面向wp的，所以我把它移到这里

我尝试开发一个wordpress插件，它可以顺利升级，更重要的是，我希望用户选择是否升级。

我就快到了，但我必须手动刷新插件设置页面才能看到升级完成。

为了让我的问题更清楚，让我们看看以下代码：

<?php
class myplugin_admin_setting_class
{
    private $options;
    public function __construct()
    {
        add_action(\'admin_menu\', array(
            $this,
            \'myplugin_admin_menu\'
        ));
        add_action(\'admin_init\', array(
            $this,
            \'myplugin_admin_init\'
        ));
    }
    public function myplugin_admin_menu()
    {
        add_options_page(\'My Plugin Setting Page\', \'MyPlugin\', \'manage_options\', \'myplugin\', array(
            $this,
            \'myplugin_admin_page\'
        ));
    }
    public function myplugin_admin_page()
    {
        $this->options = get_option(\'myplugin_options\');
?>
        <div class="wrap">
            <form action=\'options.php\', method=\'post\'>
                <?php
        setting_fields(\'myplugin_admin_page\');
        do_settings_sections(\'myplugin_admin_page\');
        submit_button(\'Upgrade\');
?>
        </form>
        </div>
        <?php
    }
    public function myplugin_admin_init()
    {
        register_setting(\'myplugin_upgrade_page\', \'myplugin_options\');
        add_settings_section(\'myplugin_version\', //section id
        __(\'Version infomation\', \'myplugin\') , \'myplugin_upgrade_callback\', \'myplugin_upgrade_page\'
        //page
        );
        add_settings_field(\'ver\', \'Current Version:\', array(
            $this,
            \'myplugin_upgrade_render\'
        ) , \'myplugin_upgrade_page\', //page
        \'myplugin_version\', //section
        array(
            \'field\' => \'ver\'
        ));
        add_settings_field(\'upgrade_confirm\', \'Upgrade?\', array(
            $this,
            \'myplugin_upgrade_confirm_render\'
        ) , \'myplugin_upgrade_page\', //page
        \'myplugin_version\', //section
        array(
            \'field\' => \'upgrade_confirm\'
        ));
    }
    public function myplugin_upgrade_render($args)
    {
        $this->options = get_option(\'myplugin_options\');
        $field = $args[\'field\'];
        $value = $this->options[\'ver\'];
        //we add the hidden filed to save \'ver\' option
        echo "<input type=\'text\' size=\'4\' disabled=\'disabled\' value=\'<?php
        echo $value; ?>\'>";
        echo "<input name=\'myplugin_options[<?php
        echo $field; ?>]\' type=\'hidden\'  value=\'<?php
        echo $value; ?>\'>";
    }
    public function myplugin_upgrade_confirm_render($args)
    {
        $this->options = get_option(\'myplugin_options\');
        $field = $args[\'field\'];
        $value = $this->options[\'upgrade_confirm\'];
?>
        <input type="checkbox" name="myplugin_options[<?php
        echo $field; ?>]" id="<?php
        echo $field; ?>" <?php
        checked($value, true); ?> value="1" />
        <?php
    }
    public function myplugin_upgrade_callback()
    {
        //check user option of upgrade true/false
        if ($this->options[\'upgrade_confirm\']) {
            echo "Do upgrade!"; //the fake code
            $options = get_option(\'myplugin_options\');
            $options[\'upgrade_confirm\'] = false; // No upgrade again
            $options[\'ver\'] = \'new version\'; //update the \'ver\' filed
            update_option(\'myplugin_options\', $options);
            //I want to add a function/action/filter here to refresh the setting page but failed.

        }
    }
}

在上面的代码中，我添加了一个名为MyPlugin的管理菜单，它有一个页面（名为myplugin_admin_page) 由函数生成myplugin_admin_page(). 此页面包括一个名为myplugin_version 一个叫做ver, 此字段的真实渲染由myplugin_upgrade_render(). 在add_settings_section() 我们有回电话myplugin_upgrade_callback(), 这将进行真正的升级。

问题是，虽然在单击“升级”按钮后更改了数据库，但设置页面似乎没有自动刷新（我还注意到有一个通知说设置已保存，所以可能会重新加载？）从现场开始ver 不是改变。

<?php
class myplugin_admin_setting_class
{
  private $options;
  public function __construct()
  {
    add_action(\'admin_menu\', array(
      $this,
      \'myplugin_admin_menu\'
    ));

    add_action(\'admin_init\', array(
      $this,
      \'myplugin_admin_init\'
    ));
  }
  public function myplugin_admin_menu()
  {
    add_options_page(\'My Plugin Setting Page\', \'MyPlugin\', \'manage_options\', \'myplugin\', array(
      $this,
      \'myplugin_admin_page\'
    ));
  }
  public function myplugin_admin_page()
  {
    $this->options = get_option(\'myplugin_options\');
?>
  <div class="wrap">
  <h2> Settings </h2>
      <form action=\'options.php\', method=\'post\'>
<?php
    @settings_fields(\'myplugin_upgrade_page\');
    @do_settings_sections(\'myplugin_admin_page\');
    submit_button(\'Upgrade\');
?>
  </form>
  </div>
<?php
  }
  public function myplugin_admin_init()
  {
    register_setting(\'myplugin_upgrade_page\', \'myplugin_options\');
    $this->options = get_option(\'myplugin_options\');
    $this->options[\'ver\']=\'old version\';
    update_option(\'myplugin_options\', $this->options);

    add_settings_section(\'myplugin_version\', //section id
      __(\'Version infomation\', \'myplugin\') , array( $this, \'myplugin_upgrade_callback\'), \'myplugin_admin_page\'
      //page
    );

    add_settings_field(\'ver\', \'Current Version:\', array(
      $this,
      \'myplugin_upgrade_render\'
    ) , \'myplugin_admin_page\', //page
    \'myplugin_version\', //section
    array(
      \'field\' => \'ver\'
    ));

    add_settings_field(\'upgrade_confirm\', \'Upgrade?\', array(
      $this,
      \'myplugin_upgrade_confirm_render\'
    ) , \'myplugin_admin_page\', //page
    \'myplugin_version\', //section
    array(
      \'field\' => \'upgrade_confirm\'
    ));
  }
  public function myplugin_upgrade_render($args)
  {
    $this->options = get_option(\'myplugin_options\');
    $field = $args[\'field\'];
    $value = $this->options[$field];
    //we add the hidden filed to save \'ver\' option
    echo "<input type=\'text\' size=\'4\' disabled=\'disabled\' value=\'". $value ."\'>";
    echo "<input name=\'myplugin_options[". $field ."]\' type=\'text\'  value=\'".$value."\'>";
  }
  public function myplugin_upgrade_confirm_render($args)
  {
    $this->options = get_option(\'myplugin_options\');
    $field = $args[\'field\'];
    $value = $this->options[$field];
?>
  <input type="checkbox" name="myplugin_options[<?php
    echo $field; ?>]" id="<?php
      echo $field; ?>" <?php
      checked($value, true); ?> value="1" />
<?php

  }
  public function myplugin_upgrade_callback()
  {
    //check user option of upgrade true/false

    $this->options = get_option(\'myplugin_options\');
    if ($this->options[\'upgrade_confirm\']) {
      echo "Do upgrade!"; //the fake code
      $options = get_option(\'myplugin_options\');
      $options[\'upgrade_confirm\'] = false; // No upgrade again
      $options[\'ver\'] = \'new version\'; //update the \'ver\' filed
      update_option(\'myplugin_options\', $options);
    }else{
      echo "Please check the upgrade field<br>";
      if($this->options[\'ver\']!=\'new version\')
      {
        echo "display upgrade details";
      }
    }
  }
}