如何添加2个wile循环

Question

我想将2个数据库与2个while循环组合在一起。代码如下。

public class DefaultPrinter
{
    [DllImport("winspool.drv", CharSet = CharSet.Auto, SetLastError = true)]
    public static extern bool SetDefaultPrinter(string Name);
}

DefaultPrinter.SetDefaultPrinter("WH");

Answer 1

第一条评论：使用PDO或MySQLI

但要让您当前的代码正常工作：

$query1 = mysql_query("SELECT `a_id`,`a_name` FROM `photo_album`");
while ($run1 = mysql_fetch_array($query1)){

    $album_id = $run1['id'];
    $album_name = $run1['name'];

    $query2 = mysql_query("SELECT `url` FROM `photo_gal` WHERE `album_id`='$album_id'");

    while($run2=mysql_fetch_array($query2)){
         $pic = $run2['url'];
    }
}