php mysql 像 facebook 一样加载内容

Question

我想使用 PHP 从 mysql 加载数据，例如 Facebook（通过向下滚动加载数据）。我检查了很多教程，每个人都在按 order by ID 做，但我无法这样做，而我的提取查询如下所示。

mysql_query("SELECT * FROM conferencecreate WHERE ccFlag = 1 AND ccStartingDate >= '$nowTime' GROUP BY ccTitle");

如果我想实施 ORDER BY ccId DESC 则它不起作用。知道如何解决这个问题吗？

我试过了：-

mysql_query("SELECT * FROM conferencecreate 
             WHERE ccFlag = 1 
               AND ccStartingDate >= '$nowTime' 
             GROUP BY ccTitle 
             ORDER BY ccId DESC");

但这产生了错误

Warning: mysql_fetch_object(): supplied argument is not a valid MySQL result resource

Answer 1

你真的不应该再使用 mysql_ 数据库扩展，但是你需要学习如何处理任何 mysql 扩展

产生的错误

所以试试这个

$res = mysql_query("SELECT * FROM conferencecreate 
                   WHERE ccFlag = 1 
                     AND ccStartingDate >= '$nowTime' 
                   GROUP BY ccTitle 
                   ORDER BY ccId DESC"); 

if ( ! $res ) {
    echo mysql_error();
    exit;
}

现在您应该会看到一条错误消息，说明您编写的查询有什么问题。

Please dont use the mysql_ database extensions, it is deprecated (gone for ever in PHP7) Especially if you are just learning PHP, spend your energies learning the PDO or mysqli_ database extensions, and here is some help to decide which to use

php mysql 像 facebook 一样加载内容

php mysql content load like facebook

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