多重條件組合查詢(二)_php基础

接一來這部分是實現用戶提交之后的查詢結果,也是程序代碼的主体部份:
<?
$linkstr=mysql_connect(“localhost”,”root”,”sa”);
mysql_select_db(“cx”,$linkstr);
$showstr=”查詢條件為:”;
$querystring=”select no,type,name,qty,price from orders”;
switch($select1)
{
case 1:
if (!empty($no))
{
switch($select2)
{
case 1:
$querystring.=” where no=”.$no;
$showstr.=”訂單為”.$no.”所有數据”;
break;
case 2:
switch($price)
{
case 1:
$querystring.=” where no=”.$no.” or price<50";
$showstr.=”訂單為”.$no.”或者价格少于50元的所有數据”;
break;
case 2:
$querystring.=” where no=”.$no.” or price between 50 and 200″;
$showstr.=”訂單為”.$no.”或者价格介于50到200元間的所有數据”;
break;
case 3:
$querystring.=” where no=”.$no.” or price>200″;
$showstr.=”訂單為”.$no.”或者价格大于200元間的所有數据”;
break;
}
break;
case 3:
switch($price)
{
case 1:
$querystring.=” where no=”.$no.” and price<50";
$showstr.=”訂單為”.$no.”并且价格少于50元的所有數据”;
break;
case 2:
$querystring.=” where no=”.$no.” and price between 50 and 200″;
$showstr.=”訂單為”.$no.”并且价格介于50到200元間的所有數据”;
break;
case 3:
$querystring.=” where no=”.$no.” and price>200″;
$showstr.=”訂單為”.$no.”并且价格大于200元間的所有數据”;
break;
}
break;
}
}
else
{
if (!empty($type))
{
switch($select2)
{
case 1:
$querystring.=” where type=””.$type.”” “;
$showstr.=” 類型為”.$type.”所有數据”;
break;
case 2:
switch($price)
{
case 1:
$querystring.=” where type=””.$type.”” or price<50";
$showstr.=”類型為”.$type.”或者价格少于50元的所有數据”;
break;
case 2:
$querystring.=” where type=””.$type.”” or price between 50 and 200″;
$showstr.=”類型為”.$type.”或者价格介于50到200元間的所有數据”;
break;
case 3:
$querystring.=” where type=””.$type.”” or price>200″;
$showstr.=”類型為”.$type.”或者价格大于200元間的所有數据”;
break;
}
break;
case 3:
switch($price)
{
case 1:
$querystring.=” where type=””.$type.”” and price<50";
$showstr.=”類型為”.$type.”并且价格少于50元的所有數据”;
break;
case 2:
$querystring.=” where type=””.$type.”” and price between 50 and 200″;
$showstr.=”類型為”.$type.”并且价格介于50到200元間的所有數据”;
break;
case 3:
$querystring.=” where type=””.$type.”” and price>200″;
$showstr.=”類型為”.$type.”并且价格大于200元間的所有數据”;
break;
}
break;
}
}
else
{
switch($price)
{
case 1:
$querystring.=本@文来源[email protected]搞@^&代*@码网(搞代gaodaima码” where price<50";
$showstr.=”价格少于50元的所有數据”;
break;
case 2:
$querystring.=” where price between 50 and 200″;
$showstr.=”价格介于50到200元間的所有數据”;
break;
case 3:
$querystring.=” where price>200″;
$showstr.=”价格大于200元間的所有數据”;
break;
}
}
}
break;
case 2:
switch($select2)
{
case 1:
$querystring.=” where no=”.$no.” or type=””.$type.”””;
$showstr.=”訂單為”.$no.”或者類別為”.$type.”所有數据”;
break;
case 2:
switch($price)
{
case 1:
$querystring.=” where no=”.$no.” or type=””.$type.”” or price<50 ";
$showstr.=”訂單為”.$no.”或者類別為”.$type.”或者价格少于50元的所有數据”;
break;
case 2:
$querystring.=” where no=”.$no.” or type=””.$type.”” or price between 50 and 200″;
$showstr.=”訂單為”.$no.”或者類別為”.$type.”或者价格介于50到200元間的所有數据”;
break;
case 3:
$querystring.=” where no=”.$no.”or type=””.$type.”” or price>200″;
$showstr.=”訂單為”.$no.”或者類別為”.$type.”或者价格大于200元間的所有數据”;
break;
}
break;
case 3:
switch($price)
{
case 1:
$querystring.=” where no=”.$no.” or type=””.$type.”” and price<50 ";
$showstr.=”訂單為”.$no.”或者類別為”.$type.”并且价格少于50元的所有數据”;
break;
case 2:
$querystring.=” where no=”.$no.” or type=””.$type.”” and price between 50 and 200″;
$showstr.=”訂單為”.$no.”或者類別為”.$type.”并且价格介于50到200元間的所有數据”;
break;
case 3:
$querystring.=” where no=”.$no.”or type=””.$type.”” and price>200″;
$showstr.=”訂單為”.$no.”或者類別為”.$type.”并且价格大于200元間的所有數据”;
break;
}
break;
}
break;
case 3:
switch($select2)
{
case 1:
$querystring.=” where no=”.$no.” and type=””.$type.”””;
$showstr.=”訂單為”.$no.”并且類別為”.$type.”所有數据”;
break;
case 2:
switch($price)
{
case 1:
$querystring.=” where no=”.$no.” and type=””.$type.”” or price<50 ";
$showstr.=”訂單為”.$no.”并且類別為”.$type.”或者价格少于50元的所有數据”;
break;
case 2:
$querystring.=” where no=”.$no.” and type=””.$type.”” or price between 50 and 200″;
$showstr.=”訂單為”.$no.”并且類別為”.$type.”或者价格介于50到200元間的所有數据”;
break;
case 3:
$querystring.=” where no=”.$no.”and type=””.$type.”” or price>200″;
$showstr.=”訂單為”.$no.”并且類別為”.$type.”或者价格大于200元間的所有數据”;
break;
}
break;
case 3:
switch($price)
{
case 1:
$querystring.=” where no=”.$no.” and type=””.$type.”” and price<50 ";
$showstr.=”訂單為”.$no.”并且類別為”.$type.”并且价格少于50元的所有數据”;
break;
case 2:
$querystring.=” where no=”.$no.” and type=””.$type.”” and price between 50 and 200″;
$showstr.=”訂單為”.$no.”并且類別為”.$type.”并且价格介于50到200元間的所有數据”;
break;
case 3:
$querystring.=” where no=”.$no.”and type=””.$type.”” and price>200″;
$showstr.=”訂單為”.$no.”并且類別為”.$type.”并且价格大于200元間的所有數据”;
break;
}
break;
}
break;
}
$result=mysql_query($querystring,$linkstr);
echo “

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