PHP，jQuery和Ajax的面向对象 [英] PHP, jQuery and Ajax Object Orientation
问题描述
我是一个非常有经验的程序员让我的头PHP和Ajax周围的第一次，和我有一点麻烦搞清楚如何将面向对象的PHP进入我的AJAX的web应用。
I'm a fairly experienced programmer getting my head around PHP and Ajax for the first time, and I'm having a bit of trouble figuring out how to incorporate object-oriented PHP into my ajax webapp.
我有一个管理页面（admin.php文件），将加载和写入来自取决于用户选择的管理页面上的表单的XML文件中的信息（info.xml）。我决定用一个对象（ContentManager.php）来管理XML文件保存到磁盘的负载和写作，即：
I have an admin page (admin.php) that will load and write information (info.xml) from an XML file depending on the users selection of a form on the admin page. I have decided to use an object (ContentManager.php) to manage the loading and writing of the XML file to disk, i.e :
class ContentManager{
var $xml_attribute_1
...
function __construct(){
//load the xml file from disk and save its contents into variables
$xml_attribute = simplexml_load_file(/path/to/xml)
}
function get_xml_contents(){
return xml_attribute;
}
function write_xml($contents_{
}
function print_xml(){
}
}
我创建admin.php文件的ContentManager对象，像这样
I create the ContentManager object in admin.php like so
<?php
include '../includes/CompetitionManager.php';
$cm = new CompetitionManager()
?>
<script>
...all my jquery
</script>
<html>
... all my form elements
</html>
所以，现在我想用AJAX来允许用户使用像这样的接口（ajax_handler.php）通过ContentManger应用程序检索XML文件中的信息
So now I want to use AJAX to allow the user to retrieve information from the XML file via the ContentManger app using an interface (ajax_handler.php) like so
<?php
if(_POST[]=="get_a"){
}else if()
}
...
?>
我知道如何做到这一点，如果我没有使用对象，即投手PHP文件会做一定的动作，取决于在。员额要求一个变量的工作，但我的设置，我不知道怎样才能有了一个指向我在admin.php文件中ajax_handler.php文件中创建的ContentManager对象？也许我的PHP对象范围的理解是有缺陷的。
I understand how this would work if I wasn't using objects, i.e. the hander php file would do a certain action depending on a variable in the .post request, but with my setup, I can't see how I can get a reference to the ContentManager object I have created in admin.php in the ajax_handler.php file? Maybe my understanding of php object scope is flawed.
无论如何，如果任何人都可以做出我想要做的意义上，我AP preciate一些帮助！
Anyway, if anyone can make sense of what I'm trying to do, I would appreciate some help!
推荐答案
觉得每一个AJAX调用作为一个单独的请求。如果在一个特定的请求的生命周期还没有实例化你的ContentManager，对象不存在。如果你想使用多个请求之间的一个对象，它序列化到会话，并在请求生命周期的早期反序列化。
think of each ajax call as a separate request. if in the life cycle of a particular request you have not instantiated your ContentManager, the object doesn't exist. If you'd like to use a single object between multiple requests, serialize it to session and deserialize it early in the request life cycle.
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