Rename K2 images using their file name structure

rename-images.php

<?php

/*
 * Author Chad Windnagle
 * Handy script for renemaing k2 item images
 * useful for when you've integrated two k2 databases and had colliding item IDs 
 * lets you batch rename tons of file names with K2s md5 naming strategy
 *
*/

$start = 15; // start id number of the k2 item
$end = 116; // end id number of the k2 items

$upNum = 190; // used to offset the IDs to avoid collisions

$basePath = __DIR__; // set a base path. I ran along side the images

for ($i = $start; $i < $end+1; $i++)
{
	$oldmd5 = md5('Image' . $i); // the old file name md5 hash is Image + ID

	$newmd5 = md5('Image' . ($i + $upNum)); // new file name is the same, offset the ID to avoid colliding

	$oldImagePath = __DIR__ . '/' . $oldmd5 . '.jpg'; // use the size when renaming cached images

	$newImagePath = __DIR__ . '/' . $newmd5 . '.jpg'; // don't use anything when renaming src files

	echo $i . ' - ';
	
	if (file_exists($oldImagePath))
	{
		echo $oldImagePath;
		echo 'renaming to ' .  $newImagePath;
		rename($oldImagePath, $newImagePath);
	}
	
	echo "<br />";
}

?>