PHP header not working for Access-Control-Allow-Origin

Question

I am using the jQuery File Upload plugin by Blueimp to upload images to a server. The problem is, the sending server is admin.example.com, and the receiving server

Answer 1

The solution for me was to re-save the PHP file using UTF-8 encoding. Apparently the original text file (that I copied into place and overwrote for the quick test) used was using some other funky encoding.

Answer 2

I use this headers and its work for me

header('content-type: application/json; charset=utf-8');
header("access-control-allow-origin: *");

Answer 3

I would try to set this on the web.config since you're operating on an IIS server:

https://gist.github.com/corydeppen/3518666

<system.webServer>
    <httpProtocol>
        <customHeaders>
            <!-- allowing all-->
            <add name="Access-Control-Allow-Origin" value="*" />
        </customHeaders>
    </httpProtocol>
</system.webServer>