PHP dump with depth

function dump($what, $depth=-1, $indent=0) {
    $ret = '';
    $nl = "\n";
    $ind = "&nbsp;&nbsp;&nbsp;&nbsp;<span style=\"opacity:0.5;position: absolute;\">¦</span>";

    if(is_array($what)) {
        $ret .= 'Array (' . $nl;

        foreach($what as $key => $value) {
            for($i = 0; $i <= $indent; $i++) {
                $ret .= $ind;
            }

            $ret .= '[' . $key . '] => ';

            if($depth == 0) {
                if(is_array($value)) {
                    $ret .= 'Array ()' . $nl;
                } else if(is_object($value)) {
                    $ret .= 'Object ()' . $nl;
                } else {
                    $ret .= $value . $nl;
                }
            } else {
                $ret .= self::dump($value, $depth-1, $indent+1);
            }
        }

        for($i = 0; $i < $indent; $i++) {
            $ret .= $ind;
        }

        $ret .= ')' . $nl;
    } else if(is_object($what)) {
        $ret .= 'Object (' . $nl;

        foreach($what as $key => $value) {
            for($i = 0; $i <= $indent; $i++) {
                $ret .= $ind;
            }

            $ret .= '[' . $key . '] => ';

            if($depth == 0) {
                if(is_array($value)) {
                    $ret .= 'Array ()' . $nl;
                } else if(is_object($value)) {
                    $ret .= 'Object ()' . $nl;
                } else {
                    $ret .= $value . $nl;
                }
            } else {
                $ret .= self::dump($value, $depth-1, $indent+1);
            }
        }

        for($i = 0; $i < $indent; $i++) {
            $ret .= $ind;
        }

        $ret .= ')' . $nl;
    } else {
        $ret .= $what . $nl;
    }

    return ($indent == 0) ? '<pre>'.$ret.'</pre>' : $ret;
}