图书管理程序（二）

$author_id!=""){
           $s_ba="select id from books_author where books_id=\"$books_id\" and author_id=\"$author_id\"";
           $resulta = @mysql_query($s_ba);
           //$counta=mysql_fetch_array($resulta);
           if(mysql_num_rows($resulta)<1){
            $q_books_author="INSERT INTO books_author (books_id, author_id, author_type) VALUES (\"$books_id\", \"$author_id\", \"$author_type\")";
            $author_id="";
            $resulta = @mysql_query($q_books_author);
        }
    }

}

echo"<BR><A HREF = $PHP_SELF>返回 </A>";
echo"</BODY></HTML>";

?>
<?
endif;
?> 

关键词：图书管理程序（二）