How to list all the folders and its files in php [duplicate]

Question

This question already has answers here:

Listing all the folders subfolders and files in a directory using php (20 answers)

Closed 8 years ago.

I have a folder and it contains directories in it.Some of the directories contains files and some other contains another directory with its file.What I want is list all the files from the folder.Suppose my folder is A and it contains folder B and C.B contains some mp3 files and in C there is another folder D and in D there are some mp3 files.How it possible to list all mp3 files from B and D.Please help.

Answer 1

function find_all_files($dir) 
{ 
    $root = scandir($dir); 
    foreach($root as $value) 
    { 
        if($value === '.' || $value === '..') {continue;} 
        if(is_file("$dir/$value")) {$result[]="$dir/$value";continue;} 
        foreach(find_all_files("$dir/$value") as $value) 
        { 
            $result[]=$value; 
        } 
    } 
    return $result; 
} 

Answer 2

while scanning directory you only want mp3 files. try directory iterator

$scan_it = new RecursiveDirectoryIterator("/example_dir");

foreach(new RecursiveIteratorIterator($scan_it) as $file) {
  if (strtolower(substr($file, -4)) == ".mp3") {
    echo $file;
  }
}

How to exclude file types from Directory Iterator loop

Answer 3

 function Read_Dir($dir) {
        $dh = opendir($dir);
        $files = array();
        while (($file = readdir($dh)) !== false) {
            $flag = false;
            if ($file !== '.' && $file !== '..') {
                  // check here if file is a directory then use it recursively
                $files[] = trim($file);

            }
        }
        return $files;

    }

Hope it helps