我有一个看起来像这样的购物车表
id catid catname userid productid prodimg prodname prodsize prodcost quantity datee timee totalamount
1 1 CN1 1 1 ABC P1 small 10 1 3/10/2015 10:00am 10
2 1 CN1 1 1 ABC P1 medium 20 1 4/10/2015 10:00am 20
3 1 CN1 1 1 ABC P1 large 30 1 3/10/2015 10:00am 30
4 1 CN1 1 1 ABC P1 perpiece 5 1 3/10/2015 10:00am 5
5 1 CN1 1 2 CDF P2 small 6 1 3/10/2015 10:00am 6
6 1 CN1 1 2 CDF P2 large 14 1 4/10/2015 10:00am 14
7 1 CN1 2 1 ABC P1 small 10 2 3/10/2015 10:00am 20
我希望以特定方式在数组中显示其数据（根据userid），我想要的结果数组看起来像这样
Array
(
[0] => Array
(
[catid] => 1
[catname] => CN1
[userid] => 1
[productid] => 1
[prodimg] => ABC
[prodname] => P1
[prodsize] => Array
(
[0] => small
[1] => medium
[2] => large
[3] => perpiece
)
[prodcost] => Array
(
[0] => 10
[1] => 20
[2] => 30
[3] => 5
)
[quantity] => Array
(
[0] => 1
[1] => 1
[2] => 1
[3] => 1
)
[datee] => Array
(
[0] => 3/10/2015
[1] => 4/10/2015
[2] => 3/10/2015
[3] => 3/10/2015
)
[timee] => Array
(
[0] => 10:00am
[1] => 10:00am
[2] => 10:00am
[3] => 10:00am
)
[totalamount] => Array
(
[0] => 10
[1] => 20
[2] => 30
[3] => 5
)
)
[1] => Array
(
[catid] => 1
[catname] => CN1
[userid] => 1
[productid] => 2
[prodimg] => CDF
[prodname] => P2
[prodsize] => Array
(
[0] => small
[1] => 0
[2] => large
[3] => 0
)
[prodcost] => Array
(
[0] => 6
[1] => 0
[2] => 14
[3] => 0
)
[quantity] => Array
(
[0] => 1
[1] => 0
[2] => 1
[3] => 0
)
[datee] => Array
(
[0] => 3/10/2015
[1] => 0
[2] => 4/10/2015
[3] => 0
)
[timee] => Array
(
[0] => 10:00am
[1] => 0
[2] => 10:00am
[3] => 0
)
[totalamount] => Array
(
[0] => 6
[1] => 0
[2] => 14
[3] => 0
)
)
)
我使用的代码是
$userid = $_REQUEST['userid'];
$sql= "SELECT catid, catname, productid, prodimg, GROUP_CONCAT(prodsize ORDER BY id ASC) as prodsize, GROUP_CONCAT(prodcost ORDER BY id ASC) as prodcost, GROUP_CONCAT(quantity ORDER BY id ASC) as quantity, GROUP_CONCAT(datee ORDER BY id ASC) as datee, GROUP_CONCAT(timee ORDER BY id ASC) as timee,
GROUP_CONCAT(totalamount ORDER BY id ASC) as totalamount from cart WHERE userid ='$userid'";
$result = mysqli_query($con, $sql);
if (mysqli_num_rows($result) > 0)
{
while($result = mysqli_fetch_assoc($result))
{
echo "<pre>";
print_r($result);
echo "</pre>";
}
}
但它没有以我想要的方式显示数组，它显示了以下数组
Array
(
[0] => Array
(
[catid] => 1
[catname] => CN1
[productid] => 1
[prodimg] => ABC
[prodsize] => small,medium,large
[prodcost] => 10,20,30
[quantity] => 1,1,1,1
[datee] => 3/10/2015,4/10/2015,3/10/2015,3/10/2015
[timee] => 10:00am,10:00am,10:00am,10:00am
[totalamount] => 10,20,30,5
)
)
任何人都可以告诉我们如何正确地获取阵列。这个数组的一个更重要的方面是prodsize中的数组应该是固定的，即如果prod尺寸小，那么它将被存储在[0]中，中[1]中，大中[2]和perpiece [3]中。 ]，如果其中一个值不存在那么它应该是0和prodcost，数量datee和timee也将遵循相同的方法
答案 0 :(得分：1)
我认为您需要al算法来重新格式化数据库中的结果。我可以看到你想要的只是获得那些连接的结果并将它们分开在独立的数组键中。
我还没有尝试过，但我怀疑你可能需要或者可能不需要$ i索引来分配元素。试试两个。
以下是您实现这一目标的方式：
$formatedResult = [];
$i = 0;
while($result = mysqli_fetch_assoc($result))
{
$formatedResult = $result;
$formatedResult[$i]['prodsize'] = explode(',', $result[$i]['prodsize']);
$formatedResult[$i]['prodcost'] = explode(',', $result[$i]['prodcost']);
$formatedResult[$i]['quantity'] = explode(',', $result[$i]['quantity']);
$formatedResult[$i]['datee'] = explode(',', $result[$i]['datee']);
$formatedResult[$i]['timee'] = explode(',', $result[$i]['timee']);
$formatedResult[$i]['totalamount'] = explode(',', $result[$i]['totalamount']);
//Repeat with the other elements with similar formating
$i++;
}
echo '<pre>';
print_r($formatedResult); //Now shows the array you want
echo '</pre>';
答案 1 :(得分：0)
要获取数组中sql select query的所有结果，只需使用fetch all function（如下所示）
$userid = $_REQUEST['userid'];
$sql= "SELECT catid, catname, productid, prodimg,
GROUP_CONCAT(prodsize ORDER BY id ASC) as prodsize,
GROUP_CONCAT(prodcost ORDER BY id ASC) as prodcost,
GROUP_CONCAT(quantity ORDER BY id ASC) as quantity,
GROUP_CONCAT(datee ORDER BY id ASC) as datee,
GROUP_CONCAT(timee ORDER BY id ASC) as timee,
GROUP_CONCAT(totalamount ORDER BY id ASC) as totalamount
from cart WHERE userid ='$userid'";
$result = mysqli_query($con, $sql);
// Fetch all
$r=mysqli_fetch_all($result,MYSQLI_ASSOC);
print_r($r);
// Free result set
mysqli_free_result($result);