添加根据帖子ID串获取用户是否回答的方法

src/bbs/Thread.php

@@ -104,4 +104,15 @@ class Thread extends Client
 	{
 		return self::call('thread.getDigest',compact('num'));
 	}
+
+    /**
+     * 根据帖子ID串获取用户是否回答
+     * @param array $threadArr
+     * @param int $userId
+     * @return array
+     */
+    public static function IsAnswerByThreadIds($threadArr, $userId)
+    {
+        return self::call('thread.IsAnswerByThreadIds', compact('threadArr', 'userId'));
+    }
 }
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