小编Mes*_*966的帖子

我有一个Windows 7系统与Wamp 2.4运行这个简单的PHP代码

for ($year = 2004; $year <= 2015; $year++){
    for ($month = 1; $month <=12; $month++){
        mysql_connect("$host", "$username", "$password")or die("cannot connect");
        mysql_select_db("$db_name")or die("cannot select DB");
        $result = mysql_query("SELECT sum(Weight) FROM Lab WHERE YEAR(date)=$year  AND MONTH(date)= $month") or die(mysql_error());

        while ($rows = mysql_fetch_array($result)) {
            $weight = $rows['sum(Weight)'];
            ${'mes'.$month}=$weight;
            $weight3=$weight+$weight3;
            $weight=0;
        }
    }

    Echo $year, " Total - ", $weight3, "<br>";
    Echo $mes1, ", ", $mes2, ", ", $mes3, ", ", $mes4, ", ", $mes5, ", ", $mes6, ", ", …