Question

How i can list all the files in a folder and its sub folders using php

Answer 1

You can make use of the SPL iterators. In particular the RecursiveDirectoryIterator which will recursively traverse through a given directory structure.

Like so:

$realpath = realpath('/path/to/file');


$fileObjects = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($realpath),
                 RecursiveIteratorIterator::SELF_FIRST);

foreach($fileObjects as $key => $object){
    if($object->getFilename() === 'filename.png') {
        echo $object->getPathname();
    }
}

The SELF_FIRST iteration mode basically tells the iterator that the parent items are to be placed first (parents come first).