Build a PHAR without hidden files

packager.php

<?php

//Cleaning up any existing phar
if(file_exists('package.phar'))
{
    unlink('package.phar');
}
//Where are my application sources
$dir = '../app/';
//Quickly get a recursive folder list
$folder = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($dir));
$items = array();
foreach($folder as $item)
{
    //Get the filename
    $filename = pathinfo($item->getPathName(), PATHINFO_BASENAME);
    //Filter Unix hidden files by their leading dot. Add more filters in this condition.
    if(substr($filename, 0, 1) != '.')
    {
        //Key is the relative path inside the Phar, value is the complete path of the file
        $items[substr($item->getPathName(), strlen($dir))] = $item->getPathName();
    }
}
//Shows the packaged files
print_r($items);
$phar = new Phar('package.phar');
//Populate the Phar
$phar->buildFromIterator(new ArrayIterator($items));
//Add a stub
$phar->setStub(file_get_contents('stub.php'));
echo PHP_EOL;

stub.php

<?php

Phar::interceptFileFuncs();

//Listing the Phar's content
$phar = new Phar(__FILE__);
foreach (new RecursiveIteratorIterator($phar) as $iteration)
{
    echo $iteration->getPathName().PHP_EOL;
}

__HALT_COMPILER();