Description:
------------
Using scandir() to fetch a list of folders/files in a folder. When I use foreach() and is_dir() to filter out folders from files, folders and files are being grouped together, almost like PHP thinks the folders are files. However if we use "." as the argument in the scandir() method, we get the desired results.

The below test script assumes you've created the following folders/files:

folderName/
folderName/testFolder1/
folderName/testFolder2/
folderName/testFile1
folderName/testFile2

These results occur using both the CLI and via a PHP page in the browser.

Test script:
---------------
<?php
// Example 1
$scan = scandir("folderName");
foreach ($scan as $file)
{
    if (is_dir($file))
    {
        echo "Folder: ".$file."\n";
    }
    else
    {
        echo "File: ".$file."\n";
    }
}
?>
<?php
// Example 2
$scan = scandir(".");
foreach ($scan as $file)
{
    if (is_dir($file))
    {
        echo "Folder: ".$file."\n";
    }
    else
    {
        echo "File: ".$file."\n";
    }
}
?>

Expected result:
----------------
Example 2 gives the expected result:

Folder: .
Folder: ..
File: testFile1
File: testFile2
Folder: testFolder1
Folder: testFolder2

Actual result:
--------------
Example 1 gives the actual result:

Folder: .
Folder: ..
File: testFile1
File: testFile2
File: testFolder1
File: testFolder2