cannot get aspx page content with curl

[Pagla]

have strange problem.Have url for some aspx pagewhen trying it in the browser i can see the content. (text content only one number nothing more)but when trying to get it with curl from my php server i have empty string as the result.not sure why.was trying many different headers, also user-agent like:\[code\] $header = array( "User-Agent: Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0)", "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8","Accept-Encoding: gzip, deflate","Accept-Language: pl,en-us;q=0.7,en;q=0.3","Cache-Control: max-age=0","Connection: keep-alive","Pragma: no-cache", "Content-Type: application/x-www-form-urlencoded; charset=utf-8" ); $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, SUBMIT_URL ); curl_setopt($ch, CURLOPT_FOLLOWLOCATION ,1); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true ); curl_setopt($ch, CURLOPT_POST, true ); curl_setopt($ch, CURLOPT_POSTFIELDS, $post); curl_setopt($ch, CURLOPT_HEADER ,1); curl_setopt($ch, CURLOPT_HTTPHEADER, $header);\[/code\]but no luck. really don't know what else can be wrong? maybe something on the aspx side?