APIController::jsonpp PHP Method

    function jsonpp($json)
    {
        $result = '';
        $level = 0;
        $prev_char = '';
        $in_quotes = false;
        $ends_line_level = NULL;
        $json_length = strlen($json);
        for ($i = 0; $i < $json_length; $i++) {
            $char = $json[$i];
            $new_line_level = NULL;
            $post = "";
            if ($ends_line_level !== NULL) {
                $new_line_level = $ends_line_level;
                $ends_line_level = NULL;
            }
            if ($char === '"' && $prev_char != '\\') {
                $in_quotes = !$in_quotes;
            } else {
                if (!$in_quotes) {
                    switch ($char) {
                        case '}':
                        case ']':
                            $level--;
                            $ends_line_level = NULL;
                            $new_line_level = $level;
                            break;
                        case '{':
                        case '[':
                            $level++;
                        case ',':
                            $ends_line_level = $level;
                            break;
                        case ':':
                            $post = " ";
                            break;
                        case " ":
                        case "\t":
                        case "\n":
                        case "\r":
                            $char = "";
                            $ends_line_level = $new_line_level;
                            $new_line_level = NULL;
                            break;
                    }
                }
            }
            if ($new_line_level !== NULL) {
                $result .= "\n" . str_repeat("\t", $new_line_level);
            }
            $result .= $char . $post;
            $prev_char = $char;
        }
        return $result;
    }