Tools to automatically generate folders and subfolders for images?

Question

PHP

Now I am rewriting a self-written site on Yii2. Image and folder names are generated manually, are there any automated systems for this.
Each folder can have 1000 subfolders and each subfolder 1000 images, is it possible to automate this process?

Answer 1

if (!is_dir($dirname)) {
    // full for owner, read and exec for others, recursive creation
    mkdir($dirname, 0755, true);
}