【jQuery】Uploadify發生HTTP ERROR的解法

I got a different http error: HTTP undefined or HTTP 500. After 4 hours of searching the web, I found the answer.

It is because the server uses Mod_Security. To turn it off, add these lines to .htacess file

<Ifmodule mod_php5.c>
SecFilterEngine "off"
SecFilterScanPOST "off"</Ifmodule>