Thu 5 Jun 2008
A PHP Oddity with a cross domain proxy for Flash
Posted by SteamSHIFT under Developing , Geek , PHP , Web Development , flashComments Off
I have been playing with Flex a bit, to write an Flash application for my masters degree (I find the flex environment much better for programming than flash), and like most people working with flash I have come up against the cross domain issue (where the player won’t pull data from a domain which doesn’t have a cross domain policy allowing them to do so). This is a problem for the application I am working with, because I want to pull RSS feeds.
The obvious answer, a php proxy. In a way that makes it sound grander than it is because all it really is is a script to pull data from a remote source to get around the cross domain issue.
here is the script (simplified):
<?php
header("Content-Type: application/xml; charset=UTF-8");
$url = $_GET['url'];
readfile($url);
?>
Now the code pulls back the feed as expected, but prepends this:
67c0
immediately before the content. Where does that come from, any ideas? Wherever it comes from it obviously means the feed won’t parse!
In the end, I used curl like this (simplified):
<?php
header("Content-Type: application/xml; charset=UTF-8");
// note that this will not follow redirects
$url = $_GET['url'];
// create a new curl resource
$ch = curl_init();
// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
// grab URL and pass it to the browser
curl_exec($ch);
// close curl resource, and free up system resources
curl_close($ch);
?>
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