Recursively Scan a Directory Using PHP SPL DirectoryIterator

RecursiveScanDirectory.php

<?php
/**
 * Get IMAGE files recursively from Root and all sub-folders
 * Skip folders in our list of results
 * LEAVES_ONLY mode makes sure ONLY FILES/Leafs endpoint is returned
 * Make sure file extension is in our Images extensions array
 */
$path = 'E:\Server\_ImageOptimize\img\testfiles';

$directory = new RecursiveDirectoryIterator($path,RecursiveDirectoryIterator::SKIP_DOTS);
$iterator = new RecursiveIteratorIterator($directory,RecursiveIteratorIterator::LEAVES_ONLY);

$extensions = array("png", "jpg", "jpeg", "gif", "gifgif");

foreach ($iterator as $fileinfo) {
    if (in_array($fileinfo->getExtension(), $extensions)) {
        echo 'File path = ' .$fileinfo->getPathname(). NL;
        echo 'File extension = ' .$fileinfo->getExtension(). NL;
        $files[] = $fileinfo->getPathname();
    }
}
echo '<pre>';
print_r($files);
echo '</pre>';
?>

The Result

Array
(
    [0] => E:\Server\_ImageOptimize\img\testfiles\css3-generator.png
    [1] => E:\Server\_ImageOptimize\img\testfiles\css3-please.png
    [2] => E:\Server\_ImageOptimize\img\testfiles\css3-tools-10.png
    [3] => E:\Server\_ImageOptimize\img\testfiles\fb.jpg
    [4] => E:\Server\_ImageOptimize\img\testfiles\mysql.gif-or8.png
    [5] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\css3-generator.png
    [6] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\css3-please.png
    [7] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\css3-tools-10.png
    [8] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\fb.jpg
    [9] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\mysql.gif-or8.png
    [10] => E:\Server\_ImageOptimize\img\testfiles\OriginalImages\support-browsers.png
    [11] => E:\Server\_ImageOptimize\img\testfiles\support-browsers.png
    [12] => E:\Server\_ImageOptimize\img\testfiles\testgif.gif
)