我会使用响应式设计，而不是网站的移动子域副本，但是如果您真的想要这样，请将以下代码放入插件中：

// this function doesn\'t exist prior to wordpress v3.4
if(!function_exists(\'wp_is_mobile\')){
   /**
    * Test if the current browser runs on a mobile device (smart phone, tablet, etc.)
    *
    * @return bool true|false
    */
   function wp_is_mobile() {
       static $is_mobile;

       if ( isset($is_mobile) )
           return $is_mobile;

       if ( empty($_SERVER[\'HTTP_USER_AGENT\']) ) {
           $is_mobile = false;
       } elseif ( strpos($_SERVER[\'HTTP_USER_AGENT\'], \'Mobile\') !== false // many mobile devices (all iPhone, iPad, etc.)
           || strpos($_SERVER[\'HTTP_USER_AGENT\'], \'Android\') !== false
           || strpos($_SERVER[\'HTTP_USER_AGENT\'], \'BlackBerry\') !== false
           || strpos($_SERVER[\'HTTP_USER_AGENT\'], \'Opera Mini\') !== false ) {
               $is_mobile = true;
       } else {
           $is_mobile = false;
       }

       return $is_mobile;
   }
}
add_action(\'init\',\'mobile_redirect_init\');
function mobile_redirect_init(){
    if(wp_is_mobile()){
        $url = \'http://m.\'.$_SERVER["HTTP_HOST"].$_SERVER["REQUEST_URI"];;
        wp_redirect($url);
    }
}