如何使用glob创建子目录数组

Question

I have the following directory structure:

MainFolder
    Folder1
        Folder1-1
             Folder1-1-1  
             Folder1-1-2
             Folder1-1-3    
        Folder1-2
             Folder1-2-1  
             Folder1-2-2
             Folder1-2-3  
    Folder2
        Folder2-1
             Folder2-1-1  
             Folder2-1-2
             Folder2-1-3  
        Folder2-2
             Folder2-2-1  
             Folder2-2-2
             Folder2-2-3

I'm trying to create 3 arrays

1 - array of all subfolders of MainFolder (Folder1, Folder2..etc)

2 - array of subfolders inside of Folder1, Folder2, etc (e.g:Folder1-1...folder2-1...)

3 - array of subfolders inside Folder1-1..., Folder1-2..., etc

this way I can only filter the subdirectories of the current directory:

//path to directory to scan
$directory = "MainFolder/";

//get all files in specified directory
$files = glob($directory . "*");

//print each file name
foreach($files as $file)
{
 //check to see if the file is a folder/directory
 if(is_dir($file))
 {
  echo $file;
 }
}

but how do I, for glob to filter the current directory and automatically group into array as I showed in the example?

I already saw that RecursiveDirectoryIterator exists but I did not understand how to put it in different arrays

Answer 1

You have a fixed low depth, so you don't really need recursive imho.

You can use wildcard * to mark different levels and GLOB_ONLYDIR to retrieve folders only :

$level1 = glob('MainFolder/*', GLOB_ONLYDIR);
$level2 = glob('MainFolder/*/*', GLOB_ONLYDIR);
$level3 = glob('MainFolder/*/*/*', GLOB_ONLYDIR);

If you want to store the last folder instead of full path you can use array_map() and basename() :

$level1 = array_map('basename', glob('MainFolder/*', GLOB_ONLYDIR));
...