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我的墙脚本有问题，一个帖子在用户自己的墙上多次显示，一次在他的朋友墙上显示。例如，如果我有 5 个朋友，脚本将显示单个帖子 5 次。

由于它在朋友墙上显示过一次，这部分工作良好，但问题出在用户自己的墙上。

PHP代码：

$qfu = "SELECT * FROM my_friends WHERE (user_id = '$user_id' OR friend_id = '$user_id') AND status = '1'";
$fu = mysql_query($qfu) or die(mysql_error());
$rowfu = mysql_num_rows($fu);
while ($rowf = mysql_fetch_array($fu)) {
    $user_id   = $rowf['user_id'];
    $friend_id = $rowf['friend_id'];
    $querymsgs = "SELECT * FROM messages where uid_fk = '$friend_id' OR uid_fk = '$user_id' order by msg_id DESC Limit 1";
    $qmsgs = mysql_query($querymsgs) or die(mysql_error());
    $row_msgs = mysql_num_rows($qmsgs);
    while ($msgs = mysql_fetch_array($qmsgs)) {
        $msg_id     = $msgs['msg_id'];
        $orimessage = $msgs['message'];
        $message    = tolink(htmlentities($msgs['message']));
        $time       = $msgs['created'];
        $privacy    = $msgs['privacy'];
        if ($privacy == '0') {
            $privacy = 'Only Me';
        } elseif ($privacy == '2') {
            $privacy = 'Public';
        } else {
            $privacy = 'Friends';
        }
        $uid           = $msgs['uid_fk'];
        $fullname      = $msgs['fname'] . " " . $msgs['lname'];
        $face          = $Wall->Avatar($uid);
        $commentsarray = $Wall->Comments($msg_id);
?>

我也尝试过下面的代码，但它也多次显示相同的帖子：

$qfu = "SELECT * FROM my_friends WHERE (user_id = '$user_id' OR friend_id = '$user_id') AND status = '1'";
$fu = mysql_query($qfu) or die(mysql_error());
$rowfu = mysql_num_rows($fu);
while ($rowf = mysql_fetch_array($fu)) {
    if ($user_id == $rowf['user_id']) {
        $fid = $rowf['friend_id'];
    } else {
        $fid = $rowf['user_id'];
    }
    $querymsgs = "SELECT * FROM messages M, tbluser U WHERE U.id='$user_id' and M.uid_fk=U.id and (M.privacy='1' or M.privacy='2') order by M.msg_id desc ";
    $qmsgs = mysql_query($querymsgs) or die(mysql_error());
    $row_msgs = mysql_num_rows($qmsgs);
    $msgs = mysql_fetch_array($qmsgs);
    $msg_id = $msgs['msg_id'];
    $orimessage = $msgs['message'];
    $message = tolink(htmlentities($msgs['message']));
    $time = $msgs['created'];
    $privacy = $msgs['privacy'];
    if ($privacy == '0') {
        $privacy = 'Only Me';
    } elseif ($privacy == '2') {
        $privacy = 'Public';
    } else {
        $privacy = 'Friends';
    }
    $uid = $msgs['uid_fk'];
    $fullname = $msgs['fname'] . " " . $msgs['lname'];
    $face = $Wall->Avatar($uid);
    $commentsarray = $Wall->Comments($msg_id);
?>

请帮助我摆脱这个问题。

4

1 回答 1

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我认为问题出在以下声明中：$qfu = "SELECT * FROM my_friends WHERE (user_id = '$user_id' OR friend_id = '$user_id') AND status = '1'";- 如果您有 5 个朋友，您的 id 将在结果中出现 5 次，因此将获得 5 次自己的帖子。

你应该去掉user_id = '$user_id'查询的一部分：
$qfu = "SELECT * FROM my_friends WHERE friend_id = '$user_id' AND status = '1'";- 这样你只能得到你的朋友。您已经拥有自己的 id，因此无需查询。

现在您需要将用于获取消息的代码放入单独的函数中，并且您已准备好：

function getMessagesById($authorId) {
    $querymsgs = "SELECT * FROM messages where uid_fk = '$authorId' order by msg_id DESC";
    $qmsgs = mysql_query($querymsgs) or die(mysql_error());
    $row_msgs = mysql_num_rows($qmsgs);
    while ($msgs = mysql_fetch_array($qmsgs)) {
        $msg_id     = $msgs['msg_id'];
        $orimessage = $msgs['message'];
        $message    = tolink(htmlentities($msgs['message']));
        $time       = $msgs['created'];
        $privacy    = $msgs['privacy'];
        if ($privacy == '0') {
            $privacy = 'Only Me';
        } elseif ($privacy == '2') {
            $privacy = 'Public';
        } else {
            $privacy = 'Friends';
        }
        $uid           = $msgs['uid_fk'];
        $fullname      = $msgs['fname'] . " " . $msgs['lname'];
        $face          = $Wall->Avatar($uid);
        $commentsarray = $Wall->Comments($msg_id);
}

//get all own messages
getMessagesById($userId);

//get all friends' messages
$qfu = "SELECT * FROM my_friends WHERE friend_id = '$user_id' AND status = '1'";
$fu = mysql_query($qfu) or die(mysql_error());
$rowfu = mysql_num_rows($fu);
while ($rowf = mysql_fetch_array($fu)) {
    $friend_id = $rowf['friend_id'];
    getMessagesById($friend_id);
}
于 2013-07-31T20:15:35.137 回答