diff --git a/extend/seven/Seven.php b/extend/seven/Seven.php
new file mode 100644
index 00000000..61d80b46
--- /dev/null
+++ b/extend/seven/Seven.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * @desc: Created by PhpStorm.
+ * @Author: Dr.Xing <ezfwork@foxmail.com>
+ * @Since: 2018/1/25 22:40
+ */
+
+namespace seven;
+
+use fast\Form;
+use app\admin\model\Sites;
+
+class Seven
+{
+    /**
+     * 生成多国语言版本的选择项
+     * @param string $name     input名称
+     * @param string $type     input类型(radio|checkbox)
+     * @param null $selected   选定项
+     * @param array $options   扩展选项
+     * @return string
+     */
+    public static function build_langs($name, $selected=null, $options=[])
+    {
+        $request = request();
+        $MultiLanguages = include EXTEND_PATH.'seven/multilanguage.php';
+        $list = [];
+
+        $siteid = isset($options['siteid'])?$options['siteid'] : '';
+        $type = isset($options['type'])? $options['type'] : 'radio';
+
+        //从站点后台进入，只显示当前站点允许的语言版本
+        if (!empty($siteid) || !empty($request->param('domain'))) {
+            if(!empty($siteid)) {
+                $domain = Sites::get(['id' => $siteid]);
+            }else{
+                $domain = Sites::get(['domain' => $request->param('domain')]);
+            }
+            $langs = explode(',', $domain['lang']);
+                foreach ($langs as $k => $v) {
+                $list[$v] = $MultiLanguages[$v];
+            }
+        } else {
+            foreach ($MultiLanguages as $k => $v) {
+                $list[$k] = $v;
+            }
+        }
+
+        $html=[];
+        $selected = empty($selected) ? 'zh-cn' : $selected;
+        //$class = empty($class)? $type.'-inline' : $class;
+        if ($type == "checkbox") {
+            $name .= substr($name, -2) != '[]' ? '[]' : '';
+            $selected = is_null($selected) ? [] : $selected;
+            $selected = is_array($selected) ? $selected : explode(',', $selected);
+            foreach ($list as $k => $v)
+            {
+                $html[] = sprintf(Form::label("{$name}-{$k}", "%s {$v}"), Form::checkbox($name, $k, in_array($k, $selected), ['id' => "{$name}-{$k}"]));
+            }
+            return '<div class="checkbox">' . implode(' ', $html) . '</div>';
+
+        } else {
+            $selected = is_null($selected) ? key($list) : $selected;
+            $selected = is_array($selected) ? $selected : explode(',', $selected);
+            foreach ($list as $k => $v)
+            {
+                $html[] = sprintf(Form::label("{$name}-{$k}", "%s {$v}"), Form::radio($name, $k, in_array($k, $selected), ['id' => "{$name}-{$k}"]));
+            }
+            return '<div class="radio">' . implode(' ', $html) . '</div>';
+        }
+    }
+}
\ No newline at end of file