File get contents and cURL error - php

Question

I have problems with "file_get_contents" and "cURL". When I make this:
$myFile = 'http://example.com/asset_compress/assets/get/bbb.js?file%5B0%5D=myfile.js';
$a=file_get_contents( $myFile );
I get this error:
Warning (2): file_get_contents
(http://example.com/asset_compress/assets/get/bbb.js?file%5B0%5D=myfile.js)
[function.file-get-contents]: failed to open stream:
HTTP request failed! HTTP/1.0 404 Not Found
[APP/Controller/MyController.php, line 1373]
Then I tried CURL like this:
$curl = curl_init();
curl_setopt($curl, CURLOPT_URL, $myFile);
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($curl, CURLOPT_USERAGENT, $this->userAgent);
curl_setopt($curl_handle, CURLOPT_VERBOSE, true);
curl_setopt($curl_handle, CURLOPT_AUTOREFERER, true);
$a = curl_exec($curl);
curl_close($curl);
And I get this error:
404 Not Found: The resource requested could not be found on this server!
But when I write http://example.com/asset_compress/assets/get/bbb.js?file%5B0%5D=myfile.js to my browser's address bar, I get the file perfectly. The headers of the browser is like this:
Request URL:http://example.com/asset_compress/assets/get/bbb.js?file%5B0%5D=myfile.js
Request Method:GET
Status Code:200 OK
Request Headers
Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3
Accept-Encoding:gzip,deflate,sdch
Accept-Language:tr,en-US;q=0.8,en;q=0.6
Cache-Control:max-age=0
Connection:keep-alive
Host:example.com
User-Agent:Mozilla/5.0 (Windows NT 5.1) AppleWebKit/537.31 (KHTML, like Gecko) Chrome/26.0.1410.28 Safari/537.31
Query String Parameters
file[0]:myfile.js
Response Headers
Connection:close
Content-Length:15911
Content-Type:application/javascript; charset=UTF-8
Date:Fri, 29 Mar 2013 20:33:43 GMT
Server:Apache
X-Powered-By:PleskLin
I suspected file_get_contents and when I make this, I get output perfectly:
$d1 = file_get_contents("http://www.yahoo.com");
print_r($d1);
When I try cURL I get 404 error. How can I more diagnose why I get 404, despite that I get 200 from browser request.

Answer 1

This being hosted on a local computer? Or else where?
I was having an similar issue that my host determined to be an ISP down the line blocking my requests.