Count lines of code in .cs files.

<?php

function countLines($path) {
    $num   = 0;
    foreach(scandir($path) as $file) {
        if(substr($file, -3, 3) == '.cs') {
            $num += count(file($path . DIRECTORY_SEPARATOR . $file));
        } else if(is_dir($path . DIRECTORY_SEPARATOR . $file) && substr($file, -1) != '.') {
            $num += countLines($path . DIRECTORY_SEPARATOR . $file);
        }
    }

    return $num;
}

?>