XMLHttpRequest和HttpRequest有什么区别 [英] What are differences between XMLHttpRequest and HttpRequest

问题描述

在Zend框架和其他框架(例如Symfony)中，有一个名为isXMLHttpRequest()的方法来确定是否为XMLHttpRequest.我不知道框架或PHP如何区分XmlHttpRequest和HttpRequest?

In Zend Framework and other framework such as Symfony, there is a method named isXMLHttpRequest() to determine this is XMLHttpRequest or not. I wonder that how can framework or PHP distinguish between XmlHttpRequest and HttpRequest?

if($this->_request->isXmlHttpRequest())
{
   //code here
}

推荐答案

来自

Zend_Controller_Request_Http具有用于检测AJAX请求的基本方法:isXmlHttpRequest().这个方法寻找一个HTTP请求标头X-Requested-With，其值为'XMLHttpRequest'.如果找到，则返回TRUE.

Zend_Controller_Request_Http has a rudimentary method for detecting AJAX requests: isXmlHttpRequest(). This method looks for an HTTP request header X-Requested-With with the value 'XMLHttpRequest'; if found, it returns TRUE.

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