Getting file directories

[Deadweight]

So I am using AJAX with PHP to get the folders inside the current directory I am in. Well at least, im attempting to.
JQuery:

$(function(){
	getFolders('#folders');
})
function getFolders(id){
	var path = window.location.pathname;
	
	$.ajax({
		type: "POST",
		url: "get.php", //Your required php page
		data: {type: "folders", dir: path}, //pass your required data here
		success: function(response){
			$(id).append(response);
		}
	});
}

PHP page (get.php):

$hiddenFolders = array('copyfiles','css','images','js');
$dir = trim($_POST['dir']);
$type = $_POST['type'];

if($type == "folders")
    $new_array = array_diff(ffnames($dir, $type), $hiddenFolders);

echo '<tr><td>Check: '.count($new_array).'</td></tr>';


function ffnames($dir, $type){
    $everything = array();
    if ($handle = opendir($dir)) {
        while (($file = readdir($handle)) !== false){
            if (!in_array($file, array('.', '..'))){
                if($type == "folders" && is_dir($dir.$file)){
                    array_push($everything,$file);
                }else if($type == "files" && !is_dir($dir.$file)){
                    array_push($everything,$file);
                }
            }
        }
    }
    
    return $everything;
} 

However it says that 'dir' doesnt exist (doing this from a localhost but will also be on server)

[Deadweight]

Actually i figured it out:

$hiddenFolders = array('copyfiles','css','images','js');
$dir = './';
$type = $_POST['type'];

if($type == "folders"){
    $new_array = array();
    $new_array = array_diff(ffnames($dir, $type), $hiddenFolders);
}
//count(scandir($dir));
//$new_array = array();
//$new_array = ffnames($dir, $type);
$table = '<tr>';
foreach($new_array as $value){
    $table .= '<td>'.$value.'</td>';
}
$table .= '</tr>';
echo $table;

function ffnames($dir, $type){
    $everything = array();
    if ($handle = opendir($dir)) {
        while (($file = readdir($handle)) !== false){
            if (!in_array($file, array('.', '..'))){//All Objects
                if($type == "folders" && is_dir($dir.$file)){
                    array_push($everything,$file);
                }else if($type == "files" && !is_dir($dir.$file)){
                    array_push($everything,$file);
                }
            }
        }
    }
    
    return $everything;
}