一个curl POST文件的问题，求大神解答

要设置请求类型为 multipart/form-data才行

问题解决了，查了半天，终于在某个地方看到这么一段话：
The full data to post in a HTTP “POST” operation. To post a file, prepend a filename with@ and use the full path. The filetype can be explicitly specified by following the filename with the type in the format ‘;type=mimetype‘. This parameter can either be passed as a urlencoded string like ‘para1=val1&para2=val2&…‘ or as an array with the field name as key and field data as value. If value is an array, the Content-Type header will be set to multipart/form-data. As of PHP 5.2.0, value must be an array if files are passed to this option with the @ prefix. As of PHP 5.5.0, the @ prefix is deprecated and files can be sent using CURLFile.
原来我的php版本问题，5.5以上用@加全路径的方法已经被弃用了，需要用CURLFile creat一下文件，难怪连知道里面也没一个人回答。

CURLOPT_POSTFIELDS这个参数如果是ＰＯＳＴ字符串时，可以用形如“name=value&...”的字符串，如果ｐｏｓｔ文件，就必须要用数组，并且文件名格式为"@绝对路径"，这是 CURL 会帮你做 multipart/form-data 编码。

<?php
$target="http://youraddress.tld/example/upload.php";
# http://php.net/manual/en/curlfile.construct.php
// Create a CURLFile object / procedural method
$cfile = curl_file_create('resource/test.png','image/png','testpic'); // try adding
// Create a CURLFile object / oop method
#$cfile = new CURLFile('resource/test.png','image/png','testpic'); // uncomment and use if the upper procedural method is not working.
// Assign POST data
$imgdata = array('myimage' => $cfile);
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $target);
curl_setopt($curl, CURLOPT_USERAGENT,'Opera/9.80 (Windows NT 6.2; Win64; x64) Presto/2.12.388 Version/12.15');
curl_setopt($curl, CURLOPT_HTTPHEADER,array('User-Agent: Opera/9.80 (Windows NT 6.2; Win64; x64) Presto/2.12.388 Version/12.15','Referer: http://someaddress.tld','Content-Type: multipart/form-data'));
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false); // stop verifying certificate
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_POST, true); // enable posting
curl_setopt($curl, CURLOPT_POSTFIELDS, $imgdata); // post images
curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true); // if any redirection after upload
$r = curl_exec($curl);
curl_close($curl);
?>

棒棒棒棒棒棒

万分感谢，困扰两天的问题，各种搜，终于解决了，谢谢，太感谢了