Display all files in folder

demo.php

<?php
include('displayFiles.php');

displayFiles('pictures');

displayFiles.php

<?php
function displayFiles($folder){
	$handle = opendir(dirname(realpath(__FILE__)).$folder);
	while($file = readdir($handle)){
		if($file !== '.' && $file !== '..'){
			echo 'pictures/'.$file;
		}
	}
}