Question

I got a folder structure like so

css
  main.css
  home
    layout.css
    menu.css
    ...
  account
    user.css
    menu.css
      user
        user.css
        level
          time.css
          ...
        ...

You can see a lot of files and folders nested in each other. I want loop through folder css, read every files and folders in it. If a file, run function do(), if a folder run function make() and continue to loop through that folder to check for files and folders inside. Repeat the process until there are no more folder and file left to loop through.

I can easily loop through the files and folders if I know how exactly how many there are. The problem is I don’t know how many folders and files there are. So there need to be a special technique to archive what I want ?

Answer 1

This would be perfect for the RecursiveDirectorIterator class that comes with PHP. It’ll loop through each file and folder recursively. Each item that you iterate through will be a subclass of SplFileInfo which contains many function you can use (e.g. getBasename(), getCTime(), getExtension(), and many more).

<?php 

$dir = '/path/to/folder';

$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir), RecursiveIteratorIterator::CHILD_FIRST);

foreach ( $iterator as $path )
{
  // If it's a directory.
  if ($path->isDir())
  {
    // Do something.
  }
  else
  {
    // Do something else.
  }
}