jquery ui文件上载错误，文件名为大写

我在Blueimp JQuery文件上传中遇到了一个错误。当我上传一个png/jpg时，一切正常，但是，当文件扩展名为大写时，$\u POST在服务器端是空的

两种情况下的请求相同：

Accept:application/json, text/javascript, */*; q=0.01
Accept-Encoding:gzip, deflate
Accept-Language:hu-HU,hu;q=0.8,en-US;q=0.6,en;q=0.4
Connection:keep-alive
Content-Length:4721321
Content-Type:multipart/form-data; boundary=----WebKitFormBoundarybCjGtutGsoqkJ58r
Cookie:language=hu; PHPSESSID=m6ag0h5aqpupseat2eb45vh130; csrftoken=EipVk7qvyTxOxuC9TwY8Wrozy8aWOFZ8
Host:localhost:90
Origin:http://localhost:90
Referer:http://localhost:90/belvaros-ingatlan/ugynok-admin/index.php
User-Agent:Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/40.0.2214.115 Safari/537.36
X-Requested-With:XMLHttpRequest

响应在内容类型上有所不同

HTTP/1.1 200 OK
Date: Thu, 26 Feb 2015 19:31:58 GMT
Server: Apache/2.4.9 (Win64) PHP/5.5.12
X-Powered-By: PHP/5.5.12
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-Length: 33
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/html; charset=ISO-8859-2

我在ajax\u处理php的开始部分检查了$\u POST和$\u请求：

global $domain, $cmd, $r_ugynok;
$domain="mydomain.hu";
session_start();
//var_dump($_REQUEST);
//var_dump($_POST);

我在谷歌搜索了很多次，但都找不到原因，也没有在fileupload的来源中找到任何东西。任何建议，为什么会发生这种情况？

用户错误：

post_max_size

在php.ini中设置得太小