if (!isset($_SESSION["userid"]))
die("You are not logged in");
$updates = getUpdatesForUser($_SESSION["userid"]);
if ($updates) {
print json_encode($updates);
} else {
print "No updates";
}
至于 get-updates，您可以将其作为数据库中的表来执行：
userid | time | updatemsg
-------------------------------------------------------------
28 | 2009-08-21 12:53:02 | You've received the 'uber' badge.
That would request updates every 10 seconds. You could do this once the page loads too. As for the PHP code in getUpdates.php:
if (!isset($_SESSION["userid"]))
die("You are not logged in");
$updates = getUpdatesForUser($_SESSION["userid"]);
if ($updates) {
print json_encode($updates);
} else {
print "No updates";
}
As for the get-updates, you can do that as a table in your database:
userid | time | updatemsg
-------------------------------------------------------------
28 | 2009-08-21 12:53:02 | You've received the 'uber' badge.
Getting a users updates is as easy as querying this table for all new updates. You could create a field to indicate when an update has been sent, and should not be sent again.
This is all very thrown-together, but should give you a very basic idea of how to accomplish it.
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这主要是通过 jQuery 完成的。只需定期查询服务器即可：
每 10 秒请求一次更新。一旦页面加载，您也可以执行此操作。至于 getUpdates.php 中的 PHP 代码：
至于 get-updates，您可以将其作为数据库中的表来执行：
获取用户更新就像查询此表中的所有新更新一样简单。您可以创建一个字段来指示更新何时已发送，并且不应再次发送。
这一切都非常杂乱，但应该让您对如何完成它有一个非常基本的了解。
This will largely be done with jQuery. It's just a matter of periodically querying the server:
That would request updates every 10 seconds. You could do this once the page loads too. As for the PHP code in getUpdates.php:
As for the get-updates, you can do that as a table in your database:
Getting a users updates is as easy as querying this table for all new updates. You could create a field to indicate when an update has been sent, and should not be sent again.
This is all very thrown-together, but should give you a very basic idea of how to accomplish it.
查看->来源
然后查看CSS。
View -> Source
Then check out the CSS.
这比看起来容易一百万倍。
你只需使用 jQuery，有一个宽度为 100%、left : 0 的 div；顶部：0；然后用一些 jQuery 动画功能来展示它。
It's a million times easier than it looks.
You just use jQuery, have a div that is width 100%, left : 0; top : 0; and then show it with some jQuery animation function.
您可以使用 jQuery 框架实现相同的功能。
这真的很容易做到。
You can achieve the same functionality with jQuery framework.
Its really easy to do.