How to loop and get data of all nested files and subfolders

Question

I have a top folder named home and nested folders and files inside
I need to insert some data from files and folders into a table
The following (simplified) code works fine if I manually declare parent folder for each level separatelly, i.e. - home/lorem/, home/impsum/, home/ipsum/dolor/ etc
Is there a way to do this automatically for all nested files and folders ?
Actually, I need the path for each of them on each level

$folders = glob("home/*", GLOB_ONLYDIR);
foreach($folders as $el){
    //$path = ??;
    //do_something_with folder;
}
$files = glob("home/*.txt");
foreach($files as $el){
    //$path = ??;
    //do_something_with file;
}

Answer 1

PHP has the recursiveIterator suite of classes - of which the recursiveDirectoryIterator is the correct tool for the task at hand.

# Where to start the recursive scan
$dir=__DIR__;

# utility
function isDot( $dir ){
    return basename( $dir )=='.' or basename( $dir )=='..';
}

# create new instances of both recursive Iterators
$dirItr=new RecursiveDirectoryIterator( $dir, RecursiveDirectoryIterator::KEY_AS_PATHNAME );
$recItr=new RecursiveIteratorIterator( $dirItr, RecursiveIteratorIterator::CHILD_FIRST );

foreach( $recItr as $obj => $info ) {
    
    # directories
    if( $info->isDir() && !isDot( $info->getPathname() ) ){
        printf('> Folder=%s<br />',realpath( $info->getPathname() ) );
    }
    
    # files
    if( $info->isFile() ){
        printf('File=%s<br />',$info->getFileName() );
    }
}