Outputs contents of a directory in json

dir2json.php

<?php 

/**
 * GET Params:
 * dir => dir name
 * abspath => true/false 
 */

header('Content-type: application/json');

$defaults = array(
	'dir'=>'data',
	'abspath'=>true
);

$options = array_merge($defaults, $_GET);

$files = array();

$options['dir'] = preg_replace('/\.+/i', '', $options['dir']);

if( $options['abspath'] == true){
	$tmp = explode('?', $_SERVER['REQUEST_URI'], 2);
	$prefix = 'http://'.$_SERVER['HTTP_HOST'] .'/'. basename($tmp[0]).'/';
}else{
	$prefix = '';
}

if ($handle = opendir( dirname(__FILE__). '/'. $options['dir'])) {
	while (false !== ($file = readdir($handle))) {
		if($file != '.' && $file != '..' && is_file($options['dir'].'/'.$file)){
			$files[] = $prefix.$options['dir'].'/'.$file;	
    	}
	}
    closedir($handle);
}

echo json_encode($files);