\[code\]<?phpif(isset($_GET['token'])){ $url="http://www.google.com/calendar/feeds/default/allcalendars/full"; $useragent="PHP 5.2"; $header=array( "GET /accounts/AuthSubSessionToken HTTP/1.1", "Content-Type: application/x-www-form-urlencoded", "Authorization: AuthSub token=".$_GET['token'], "User-Agent: PHP/5.2", "Host: https://www.google.com", "Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2", "Connection: keep-alive" ); $ch = curl_init(); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_TIMEOUT, 60); curl_setopt($ch, CURLOPT_HTTPHEADER, $header); curl_setopt($ch, CURLOPT_URL, $url); $data = http://stackoverflow.com/questions/2090932/curl_exec($ch); print_r($data);}?>\[/code\]The result is page not found. However, I call http://www.google.com/calendar/feeds/default/allcalendars/full from firefox , it's return XML file. So, I think, my code may wrong. But I can't find the error. 