Need help: Simple PHP code to invoke remote ASP script and handle XML response

Caniggia

Hello,

Would like to kindly ask for help with this wee task.

Here's the basic process I'd like to implement:

HTML page with a form -> calls a PHP module in a new window. [ALREADY DONE]

PHP module -> Here I need help

Takes parameters from HTML form, calls an ASP script by GET.
e.g. invoking http://www.myotherserver.com/somescript.aspx?p1=x?p2=y?p3=z.

p1,p2 & p3 were received from the HTML form (by post).

Assigns the XML respose from the ASP script to a string, and outputs relevant text according to data. [I'll use here strpos() to find if there's "OK" or "ERROR" in the response string].

Would be glad to get some tips how to code items 1&2 in the php module.

bpat1434

<?php
$p1 = (isset($_GET['p1']) || !empty($_GET['p1'])) ? $_GET['p1'] : 'x';
$p2 = (isset($_GET['p2']) || !empty($_GET['p2'])) ? $_GET['p2'] : 'y';
$p3 = (isset($_GET['p3']) || !empty($_GET['p3'])) ? $_GET['p3'] : 'z';

$url = 'http://www.myotherserver.com/somescript.asp?p1=' . $p1 . '&p2=' . $p2  . '&p3=' . $p3';

$contents = file_get_contents($url);

/**
 *  Now, all the response from your ASP page is in a string in the variable contents
 */

Hope that helps.

Caniggia

Hi,

many thanks for the code!

It does store the XML response, but apparently I still have a problem.

The 3rd party script that I'm invoking, http://www.myotherserver.com/somescript.asp, has IP restriction.

meaning it will return "OK" response (and execute) only if the request was sent from a specific IP, for security matters.

I've configured my server IP (maching IP) to be allowed, but when I run this nice PHP script, I get an "INVALID_IP" response.

I guess that the actual referring IP isn't the machine's IP, but my local IP (the user IP).

So I wonder how do I make the PHP script to call this 3rd party script from the server IP, and not from the user IP....?

any idea?

bpat1434

You can't..... unless you modify the headers that are sent.....

Well... actually.... you could just use an intermediate script. Another ASP page on the server that will execute and return the results of the ASP script you want.

Caniggia

Hi,

thanks again for the answer.

I actually tried to use an intermediate PHP script, but it still returned INVALID_IP.

How can I modify the headers? Is it a viable solution...?