我刚刚有一个项目，我需要创建一个按用户搜索的元表单，最后我为它创建了一个短代码，我只是对它做了一些修改，以向您展示如何使其与字段一起工作，所以只需将此代码粘贴到主题的函数中即可。php文件或插件文件：

add_shortcode(\'user_search\',\'My_User_search\');
function My_User_search($atts = null){
    $out = user_search_form();
    if (isset($_GET[\'user_search\']) && $_GET[\'user_search\'] == "search_users" && isset($_GET[\'search_by\'])){
        global $wpdb;
        $metakey = $_GET[\'search_by\'];
        $args = array(\'meta_key\' => $metakey);
         if (isset($_GET[\'s_value\'])){
            $metavalue = $_GET[\'s_value\'];
            $args[\'meta_value\'] = $metavalue;
         }


        $search_users = get_users($args);
        $out .= \'<div class="user_search_results">\';
        if (count($search_users) >0){

            // here we loop over the users found and return whatever you want eg:
            $out .= \'<ul>\';
            foreach ($search_users as $user) {
                $out .= \'<li>\' . $user->user_email . \'</li>\';
            }
            $out .= \'</ul>\';
        }else{
            $out .= \'No users found, try searching for something else.\';
        }
        $out .= \'</div>\';
    }
    return $out;
}

//function to display user search form
function user_search_form(){
    $metavalue = $metakey = \'\';
    if (isset($_GET[\'search_by\'])){
        $metakey = $_GET[\'search_by\'];
    }
    if (isset($_GET[\'s_value\'])){
        $metavalue = $_GET[\'s_value\'];
    }
    $re = \'<div class="user_search"><form action="" name="user_s" method="get">
        <label for="search_by">Search by:</label>
            <select id="search_by" name="search_by">\';
    if ($metakey != \'\'){
        $re.= \'"\';
        $re.= ($metakey == "nickname") ? \'<option value="nickname" selected="selected">Name</option>\': \'<option value="nickname">Name</option>\';
        $re.= ($metakey == "areacode") ? \'<option value="areacode" selected="selected">area code</option>\': \'<option value="areacode">area code</option>\';
        $re.= ($metakey == "company") ? \'<option value="company" selected="selected">company</option>\': \'<option value="company">area code</option>\';
        $re.= ($metakey == "affiliate") ? \'<option value="affiliate" selected="selected">affiliate</option>\': \'<option value="affiliate">area code</option>\';
    }else{
        $re .= \'
            <option value="nickname">Name</option>
            <option value="areacode">area code</option>
            <option value="company">company</option>
            <option value="affiliate">affiliate</option>\';
    }
    $re .= \'
            </select>
        <label for="s_value">Value:</label>
            <input id="s_value" name="s_value" type="text" value="\'.$metavalue.\'"/>
            <input name="user_search" id="user_search" type="hidden" value="search_users"/>
            <input id="submit" type="submit" value="Search" />
        </form></div>\';
    return $re;
}

Usage: