Script to clean WP content upload folder of resized images

clean-thumbs.php

<?php

$Directory = new RecursiveDirectoryIterator('../legacy/wp-content/uploads/');
$Iterator = new RecursiveIteratorIterator($Directory);

$i = 0;
foreach($Iterator as $name => $object){
	if (!preg_match('/[\_\-]\d+x\d+\./i', $name)) continue;

	//if ($i > 20) break;
	echo "$name\n";
	unlink($name);
	$i++;
}