Generate a json string of files in a directory

json_recurse_scandir.php

<?php
header('Content-Type: application/json');

function scandir_folders($d, $blacklist = array('.', '..')) {
    return array_filter(scandir($d), function ($f) use($d, $blacklist) {
        return is_dir($d . DIRECTORY_SEPARATOR . $f) && !in_array($f, $blacklist);
    });
}

function scandir_all($d, $blacklist = array('.', '..')) {
    return array_filter(scandir($d), function ($f) use($d, $blacklist) {
        return !in_array($f, $blacklist);
    });
}

//@todo probably should limit the depth
function recurse_scandir($d, $first=false)
{
    $out = "";
    if (!$first) {
        $out .= ",";
    }
    $out .= "{";
    $cnt = 0;
    foreach (scandir_all($d) as $key=>$item)
    {
        $path = $d.'/'.$item;
        if (is_dir($path))
        {
            $out .= "\"$path\":";
            $out .= recurse_scandir($path, true);
            if ($cnt==0) {
                $out .= ",";
            }

        }
        else
        {
            if ($cnt && substr($out, -1)!=",") {
                $out .= ",";
            }
            $out .= "\"$item\":\"$path\"";
        }
        $cnt++;
    }
    $out .= "}";
    return $out;

}

echo recurse_scandir('./src', true);
?>