Magento png to jpg

pngtojpg.php

<?php
require_once '../app/Mage.php';
umask(0);
Mage::app('');


function dupeImage($path) {
    $img = imagecreatefrompng($path);
    $new = str_replace('.png','.jpg',$path);
	$bg = imagecreatetruecolor(imagesx($img), imagesy($img));
	imagefill($bg, 0, 0, imagecolorallocate($bg, 255, 255, 255));
	imagealphablending($bg, TRUE);
	imagecopy($bg, $img, 0, 0, 0, 0, imagesx($img), imagesy($img));
	$quality = 100; // 0 = worst / smaller file, 100 = better / bigger file 
	imagejpeg($bg, $new, $quality);
	ImageDestroy($bg);
	echo $new . "\n";
}


$magePath = Mage::getBaseDir();
$mediaPath = $magePath . '/media/catalog/product';
$cachePath = $mediaPath . '/cache';

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

$extensions = array("png");

foreach ($iterator as $fileinfo) {
    if (in_array($fileinfo->getExtension(), $extensions)) {
		if (strpos($fileinfo->getPathname(),$cachePath) !== true) {
		    $files[] = $fileinfo->getPathname();
		}
    }
}

foreach ($files as $galleryImage){
    dupeImage($galleryImage);
}