Hi, Is there any way to upload an xls file to google docs using only cURL call through php. I have tried with Gdata but unfortunately that didn't worked (giving me an error uploaded file cannot be imported) here is the code with with I am trying with but its giving me an error 411, that's an error Post Request requires a header Content-length though I have set the Content-Length Header $xml='<?xml version="1.0" encoding="UTF-8"?> <atom:entry xmlns:atom="http://www.w3.org/2005/Atom"> <atom:category scheme="http://schemas.google.com/g/2005#kind" term="http://schemas.google.com/docs/2007#spreadsheet" label="spreadsheet"/> <atom:title>example spreadsheet</atom:title> <docs:writersCanInvite value="false" /> </atom:entry>'; $headers=array( "Authorization:GoogleLogin auth=". $auth, "Content-Type: application/atom+xml", "Content-Length:". strlen($xml), "Slug:test" ); // Make the request $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, "http://docs.google.com/feeds/documents/private/full"); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($ch, CURLOPT_HEADER , 1); curl_setopt($ch, CURLOPT_HTTPHEADER, $headers); curl_setopt($ch, CURLOPT_VERBOSE, 1); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, $xml); $response = curl_exec($ch); thanks -avisheks