This php class creates thumbs from a folder to another, and crop the image to a square
$croping= new thumbs_crop('images','images/thumbs'); $croping->crop_all();
Adicional functions: $croping->get_pictures();
return a array with the pictures inside the images folder
It detects if the thumb have a mother-image, if not it detect the thumb, is very usefull to delect thumbs that are not in use.
Make sure you have created the folder images and the thumbs folder.
Make sure you have gd extension in php.ini
make sure you haver permissions