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copied!<p>Your data is wrong. If you expect the data to be found in the $_POST array of PHP, it should look like this:</p> <pre><code>const char *bytes = "mydata=Hello%20World"; </code></pre> <p>If you want to send XML Data, you need to set a different HTTP Content Type. E.g. you might set</p> <pre><code>application/xml; charset=utf-8 </code></pre> <p>If you set no HTTP Content Type, the default type</p> <pre><code>application/x-www-form-urlencoded </code></pre> <p>will be used. And this type expects the POST data to have the same format as it would have in a GET request.</p> <p>However, if you set a different HTTP Content Type, like application/xml, then this data is not added to the $_POST array in PHP. You will have to read the raw from the input stream.</p> <p>Try this:</p> <pre><code>NSString * str = [NSString stringWithFormat:@"<?xml version=\"1.0\"?>\n<mydata>%@</mydata>", data]; [request setHTTPMethod:@"POST"]; [request setValue:@"application/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"]; [request setHTTPBody:[str dataUsingEncoding:NSUTF8StringEncoding]]; </code></pre> <p>and on the server try the following PHP:</p> <pre><code>$handle = fopen("php://input", "rb"); $http_raw_post_data = ''; while (!feof($handle)) { $http_raw_post_data .= fread($handle, 8192); } fclose($handle); </code></pre> <p>Please note that this only works if the HTTP header of your POST is not application/x-www-form-urlencoded. If it is application/x-www-form-urlencoded then PHP itself reads all the post data, decodes it (splitting it into key/value pairs), and finally adds it to the $_POST array.</p>

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