Description:
------------
When using glob() on Win 7 64 PHP 5.6.8,
when using GLOB_BRACE with multiple brackets within the braces,
glob() returns an empty array even when files match.
This same function works as expected on PHP 5.3.10 on CentOS 6.7.

Test script:
---------------
$x = glob('D:\\Icons\\*.{[jJ][pP][gG],[gG][iI][fF]}', GLOB_BRACE);
var_dump($x);

/*
The target directory "D:\Icons\" contains these files:
image1.jpg
image2.GIF
image3.bmp
*/

Expected result:
----------------
array(2) {
  [0]=> "D:\Icons\image1.jpg"
  [1]=> "D:\Icons\image2.GIF
}

Actual result:
--------------
array(0) {
}