如何使用Ajax来使用URL，或其他方式注入具体的PHP函数？ [英] How to use Ajax to inject specific PHP function using URL, or other method?

问题描述

我从刚才的JS到PHP和Ajax的境界感动。我已经在过去涉足一些与PHP。 我的真正的AP preciate多少帮助计算器一直在帮助我的基本问题。

I'm moving from the realm of just JS to php and Ajax. I've dabbled some with PHP in the past. I really appreciate how much help stackoverflow has been in helping me with basic questions.

让说我有一个名为DIV #divName 。

let says I have a div called #divName.

我使用Ajax的以下JS。一些这只是伪code。

I use the following JS for Ajax. Some of this is just pseudo code.

var request = false;
   try {
     request = new XMLHttpRequest();
   } catch (trymicrosoft) {
     try {
       request = new ActiveXObject("Msxml2.XMLHTTP");
     } catch (othermicrosoft) {
       try {
         request = new ActiveXObject("Microsoft.XMLHTTP");
       } catch (failed) {
         request = false;
       }  
     }
   }

   if (!request)
     alert("Error initializing XMLHttpRequest!");

   function getAjaxInfo(<name of the php function???>) { //<<<<< this is the function I need help with
    var myFunction= nameOfPHPfunctionIJustGot;
     var url = "filename.php?func=" + myFunction;
     request.open("GET", url, true);
     request.onreadystatechange = updatePage;
     request.send(null);
   }

  function updatePage() {
     if (request.readyState == 4) {
       if (request.status == 200) {
         var response = request.responseText;
             document.getElementById("divName").innerHTML = response; //probably going to use Jquery append here, but this example works.
               } else
         alert("status is " + request.status);
     }
   }

在我有我的fileName.php文件：

The I have my fileName.php file:

<?php

function header() { ?>
   header content goes here
<?php }

function footer() { ?>
    footer content goes here
<?php }

?>

我的目标是，当我执行 getAjaxInfo（），我可以拉什么PHP函数我想要的。

My goal is that when I execute getAjaxInfo(), I can pull whatever PHP function I want.

因此​​，可以说，如果我做了的onClick =getAjaxInfo（头）将得到PHP的头功能，适用于JavaScript函数，然后应用以一个div。

So lets say if I do a onClick="getAjaxInfo(header)" it will get the php header function, apply it to a javascript function, and then apply that to a div.

任何帮助将是AP preciated！

Any help would be appreciated!

推荐答案

尝试使用：

$func=$_GET['func'];
if(function_exists($func)) $func();

在这种方式，您获得通过GET传递函数名和执行它。

In this way you get the function name passed by GET and the execute it.

如果您希望能够调用只有特定的功能：

If you want to be able to call only certain functions:

$allowedFunctions=array("header","footer");
$func=$_GET['func'];
if(in_array($func,$allowedFunctions) && function_exists($func)) $func();

这篇关于如何使用Ajax来使用URL，或其他方式注入具体的PHP函数？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！