Edit History

include_once( './config/config.inc.php');

$images = Db::getInstance()->executeS('SELECT id_image FROM '._DB_PREFIX_.'image');

foreach ($images as $image){
    $folders = str_split((string)$image['id_image']);
    $image_path = _PS_IMAGE_DIR_.'p/'.implode('/', $folders).'/'.$image['id_image'].'-thickbox.jpg';
/* ./img/p/1/1/1/1/1111-thickbox.jpg */

    if (file_exists($image_path)){
        unlink($image_path);
    }
}