Detect BOM sequence in a folder recursively

#!/usr/bin/php
<?php
define('STR_BOM', "\xEF\xBB\xBF");
$file = null;
$directory = getcwd();

$rit = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($directory), RecursiveIteratorIterator::CHILD_FIRST);
try {
    foreach ($rit as $file) {
        if ($file->isFile()) {
            $path_parts = pathinfo($file->getRealPath());

            if ('php' == $path_parts['extension']) {
                $object = new SplFileObject($file->getRealPath());

                if (false !== strpos($object->getCurrentLine(), STR_BOM)) {
                    print $file->getRealPath()."\n";
                }
            }
        }
    }

} catch (Exception $e) {
    die ('Exception caught: '. $e->getMessage());
}

?>