More dynamic create path for renamed wp-content

$path = "/home/somesite/public_html/wp-content/themes/some-theme";
echo getBase($path); /* /home/somesite/public_html/ */

function getBase($path) {
    $i = substr($path,-1) == '/' ? 4 : 3;
    $end = strlen($path);
    $offset = 0;
    while($i > 0) {
        $end = strrpos($path, '/', -$offset);
        $offset = strlen($path) - $end+1;
        $i--;
    }
    return substr($path, 0, $end+1);
}