我查询了这样的数据库,得到了一个数组:
i queried a DB like this which got me an array:
foreach($oid as $orderid) {
$orderdetailData[] = DB::table('order_details')
->join('orders', 'order_details.oid', '=', 'orders.oid')
->select('order_details.oid', 'orders.ostatus')
->where('order_details.oid', $orderid)->get();
}
$data = array_flatten($orderdetailData);
return $data;
这是我得到的数组
array (size=2)
0 =>
object(stdClass)[174]
public 'oid' => int 1
public 'ostatus' => string 'Placed' (length=6)
1 =>
object(stdClass)[158]
public 'oid' => int 2
public 'ostatus' => string 'Placed' (length=6)
我正在尝试以表格形式获取此数组
I am trying to get this array in the form
array (size=2)
0 =>
array (size=2)
public 'oid' => int 1
public 'ostatus' => string 'Placed' (length=6)
1 =>
array (size=2)
public 'oid' => int 2
public 'ostatus' => string 'Placed' (length=6)
我试过这样做:
foreach($orderdetailData as $key => $value){
$data[] = array_flatten($orderdetailData[$key]);
}
但是这样做会得到一个这种形式的数组:
But doing this gets me an array in this form:
array (size=2)
0 =>
array (size=1)
0 =>
object(stdClass)[174]
public 'oid' => int 1
public 'ostatus' => string 'Placed' (length=6)
1 =>
array (size=1)
0 =>
object(stdClass)[158]
public 'oid' => int 2
public 'ostatus' => string 'Placed' (length=6)
这不是我想要的.有人能告诉我这样做的简单方法是什么吗?谢谢
Which is not i what i am looking for. Can someone tell me what would be an easy way to do this ? Thanks
使用 array_map
并强制转换为数组就足够了:
Using array_map
and casting to an array should be sufficient:
$data = array_map(function($object){
return (array) $object;
}, $data);
我也不会在循环中运行查询.您应该尝试从数据库的一个查询中获取该数据.像这样的东西可以工作:
I also wouldn't run queries inside a loop. You should try getting that data in one query from the db. Something like this could work:
$data = DB::table('order_details')
->join('orders', 'order_details.oid', '=', 'orders.oid')
->select('order_details.oid', 'orders.ostatus')
->whereIn('order_details.oid', $oid)->get();
正如在另一个答案中提到的那样,让我解释一下如何通过将 PDO 设置为 FETCH_ASSOC
来完成同样的任务:
DB::setFetchMode(PDO::FETCH_ASSOC);
$data = DB::table('order_details') .... ->get();
但是,这会更改请求其余部分的全局获取模式(至少在您不打开新连接的情况下).为了保存,您应该在之后将其更改回来:
However this changes the fetch mode globally for the rest of the request (at least if you don't open a new connection). To be save you should change it back afterwards:
DB::setFetchMode(PDO::FETCH_ASSOC);
$data = DB::table('order_details') .... ->get();
DB::setFetchMode(PDO::FETCH_CLASS);
如果您不确定使用的是什么默认值,甚至可以先备份它:
Or even back it up first if you can't be sure what default is used:
$fetchModeBefore = DB::getFetchMode();
DB::setFetchMode(PDO::FETCH_ASSOC);
$data = DB::table('order_details') .... ->get();
DB::setFetchMode($fetchModeBefore);
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