public function setQuerySeparator(string $separator)
    {
        $separator = filter_var($separator, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_LOW);

        $this->query_separator = trim($separator);
    }
public function setQuerySeparator(string $separator)
    {
        $separator = filter_var($separator, FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_LOW);

        $this->query_separator = trim($separator);
    }
public function setQuerySeparator ( string $ separator ) { $ separator = filter_var ( $ separator , FILTER_SANITIZE_STRING , FILTER_FLAG_STRIP_LOW ) ; $ this -> query_separator = trim ( $ separator ) ; }
Query separator setter

@param string $separator
Query separator setter