Doctrine\OrientDB\Query\Formatter\Query\Updates::format PHP Method

    public static function format(array $values)
    {
        $string = "";
        foreach ($values as $key => $value) {
            if ($key = self::stripNonSQLCharacters($key)) {
                if ($value === null) {
                    $value = 'NULL';
                } else {
                    if (is_int($value) || is_float($value)) {
                        // Preserve content of $value as is
                    } else {
                        if (is_bool($value)) {
                            $value = $value ? 'TRUE' : 'FALSE';
                        } elseif (is_array($value)) {
                            $value = '[' . implode(',', $value) . ']';
                        } else {
                            $value = '"' . addslashes($value) . '"';
                        }
                    }
                }
                $string .= " {$key} = {$value},";
            }
        }
        return substr($string, 0, strlen($string) - 1);
    }