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    <p>As mmattax mentioned, the easiest way to do this is by using a proxy script.</p> <p>Here's a script I use to call out to another domain, passing it an urlencoded proxy_url parameter.</p> <p>url_proxy.php <pre><code>// Is it a POST or a GET? $url = ($_POST['proxy_url']) ? $_POST['proxy_url'] : $_GET['proxy_url']; // Open the Curl session $session = curl_init($url); // If it's a POST, put the POST data in the body if ($_POST['proxy_url']) { $postvars = ''; while ($element = current($_POST)) { if (key($_POST) != 'proxy_url') { $postvars .= key($_POST).'='.$element.'&amp;'; } next($_POST); } curl_setopt ($session, CURLOPT_POST, true); curl_setopt ($session, CURLOPT_POSTFIELDS, $postvars); } // Don't return HTTP headers. Do return the contents of the call curl_setopt($session, CURLOPT_HEADER, false); curl_setopt($session, CURLOPT_RETURNTRANSFER, true); // Make the call $response = curl_exec($session); // Return the response if (curl_errno($session)) { $error_message = curl_error($session); echo 'Error: '.$error_message; } else { echo $response; } curl_close($session); ?&gt; </code></pre> <p>In your case you may want to alter the error handling bit to return a valid bit of xml that your app can parse.</p> <p>I usually put this in my webroot, and call it from javascript with something like:</p> <pre><code>function showMapLegend(baseURL, layer) { var url = 'http://our-map-server/get-a-legend.php?layer='+layer; var dt = new Date(); var proxy = baseURL + '/url_proxy.php?currDate='+dt.getTime()+'&amp;proxy_url='; url = proxy + encodeURIComponent(url); new Ajax.Request(url, { method: 'get', onSuccess: function(transport) { $('map-legend-img').src = transport.responseText; new Effect.Appear('map-legend', {duration: 0.5}); } }); } </code></pre> <p>The example javascript function above is used to get a simple url string back from our map server, we don't care if it fails so there's no onFailure etc, and it's mostly Prototype, but I'm sure you get the idea on how this uses the proxy script.</p> <p>The baseURL variable is passed in, it should contain the base "<a href="http://server/theappname" rel="nofollow noreferrer">http://server/theappname</a>" like url for your app.</p>
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    1. POHow to implement a cross-domain Ajax request using CakePHP and jQuery?
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    1. COHey Ian, Thanks for the detailed response, I'm currently trying to implement it. I was wondering if this would work if http://www.example.com is a website that I don't run but they want to get access to my xml? Because it seems that the proxy php needs to be placed there and not on my site?
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    2. COHi 828, yes, the proxy script needs to be on the server that is going to then ask another server for the data.
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