致命错误：在'path/to/file'中找不到类'插件' - Wordpress插件开发

Question

我正在开发一个Wordpress插件，并通过Wordpress的SVN进行更新。当进入函数来调用回调函数getLogoUrl，我得到这个错误：

Fatal error: Class 'plugin' not found in /customers/1/6/2/carpe-noctem.no/httpd.www/wp-content/plugins/logo-switcher/inc/helpers.php on line 21

的问题是，类不存在可言的，该文件是早已不复存在删除。该文件中的代码已被移至不同的文件，但错误显示为已从系统中删除的文件。

这是具有应该回调的类的文件。

<?php 

/* 
* This file is part of the logo-switcher package. 
* (c) Iversen - Carpe Noctem <[email protected]> 
* 
* For the full copyright and license information, please view the LICENSE 
* file that was distributed with this source code. 
*/ 

// Block direct access 
if(!defined('ABSPATH'))exit; 

/** 
* Logo Switcher 
* 
* @author Iversen - Carpe Noctem 
*/ 

if (class_exists('class_Logo_Switcher')) { 

class class_Logo_Switcher 
{ 

    /** 
    * Add Theme Customize Support 
    * 
    * @param WP_Customize_Manager $manager 
    */ 
    public static function addThemeCustomizeSupport(\WP_Customize_Manager $manager) 
    { 

     // add the image filed 
     $manager->add_setting('logo_switcher'); 
     $manager->add_control(new \WP_Customize_Image_Control($manager, 'logo_switcher', array(
      'label' => __('Choose your logo', 'logo-switcher') 
      , 'section' => 'title_tagline' 
      , 'description' => __('Note: Depending on the current theme setting, the choosen logo might be used on the login page.', 'logo-switcher') 
     ))); 
    } 

    /** 
    * Add the logo to the login page 
    * 
    * Change the logo in the login page and also change the url href and title 
    * 
    * @return boolean false if the optioh is disabled 
    */ 
    public static function addLoginSupport() 
    { 

     $setting = self::getOptions(); 
     if (!$setting['enable-on-login-page']) 
      return false; 

     add_filter('login_headerurl', function() { 
      return get_bloginfo('url'); 
     }); 
     add_filter('login_headertitle', function() { 
      return get_bloginfo('description'); 
     }); 

     $url = static::getLogoUrl(); 
     if (!empty($url)) { 
      list($width, $height, $type, $attr) = getimagesize($url); 
      print(
        '<style type="text/css">' 
        . ".login h1 a {background-image: url('{$url}'); background-size: 100%; width:100%; height:{$height}px;}</style>" 
      ); 
     } else { 
      print(
        '<style type="text/css">.login h1 a {display:none}</style>' 
      ); 
     } 
    } 

    /** 
    * Get options 
    * 
    * @return array 
    */ 
    public static function getOptions() 
    { 
     $default = array(
      // path for default logo image 
      'default' => '/logo.png', 
      //the logo url (default to home page) 
      'url' => home_url('/'), 
      // the logo desciption default to (get_bloginfo('name', 'display')) 
      'description' => get_bloginfo('name', 'display'), 
      // enable logo display on the login page 
      'enable-on-login-page' => true, 
     ); 
     return apply_filters('logo-switcher.options', $default); 
    } 

    /** 
    * Get the logo url 
    * 
    * @return string 
    */ 
    public static function getLogoUrl() 
    { 
     $setting = self::getOptions(); 
     ($result = get_theme_mod('logo_switcher')) && !empty($result) ? 
         $result : $setting['default']; 
     return esc_url($result); 
    } 

    /** 
    * Print logo url 
    * 
    * @param string $path the url target 
    * @param string $description the logo image description 
    * 
    */ 
    public static function printLogo($path = null, $description = null) 
    { 

     $setting = static::getOptions(); 

     $path = !empty($path) ? $path : $setting['url']; 
     $description = !empty($description) ? $description : $setting['description']; 

     echo sprintf(
       '<a href="%1$s" title="%2$s" rel="home"><img src="%3$s" alt="%2$s"></a>' 
       , esc_url($path) 
       , esc_attr($description) 
       , esc_url(static::getLogoUrl()) 
     ); 
    } 

} 
} 
$Logo_Switcher_Plugin = new class_Logo_Switcher; 

有帮助吗？

Answer 1

使用不class_exists（）

if (!class_exists('class_Logo_Switcher')) { 

class class_Logo_Switcher { } 

}