put方式提交上传图片

//put
function curlrequest($url,$data,$method='post'){
$ch = curl_init(); //初始化CURL句柄
curl_setopt($ch, CURLOPT_URL, $url); //设置请求的URL
curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); //设为TRUE把curl_exec()结果转化为字串，而不是直接输出
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $method); //设置请求方式
curl_setopt($ch,CURLOPT_HTTPHEADER,array("X-HTTP-Method-Override: $method"));//设置HTTP头信息
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);//设置提交的字符串
$document = curl_exec($ch);//执行预定义的CURL
if(!curl_errno($ch)){
$info = curl_getinfo($ch);
echo 'Took ' . $info['total_time'] . ' seconds to send a request to <br />' . $info['url'];
} else {
echo 'Curl error: ' . curl_error($ch);
}
curl_close($ch);
return $document;
}

$return = curlrequest($url,$file_data, 'put');

$url提交的完整路径,$data:$file_data = file_get_contents($_FILES["file"]["tmp_name"]);

函数转自:http://www.oschina.net/code/snippet_192190_19100