Question

我试图找出为什么我的查询不起作用。我正在尝试将status = 'S'的每个月的所有金额加在一起。但是，我收到以下错误。有什么想法吗？

[05-Jul-2013 11:21:30 America/New_York] PHP Fatal error:  Cannot use object of type mysqli_result as array

我的代码：

$closedsales = mysqli_query($mysqli, "SELECT MONTH(date) as month, sum(amount) as total FROM sales WHERE user_id = '".$userid."' AND status = 'S' GROUP BY MONTH(date)");

while ( $row = mysqli_fetch_row($closedsales) ) {
    $closedsales[$row['month']] = $row['total'];
}

更新：

$closedsales = mysqli_query($mysqli, "SELECT MONTH(date) as month, sum(amount) as total FROM sales WHERE user_id = '".$userid."' AND status = 'S' GROUP BY MONTH(date)");

while ( $row = mysqli_fetch_row($closedsales) ) {
    $monthlysales[$row['month']] = $row['total'];
}


foreach($monthlysales as $monthlysale) {
echo $monthlysale;
echo "This worked...";
}

谢谢！我摆脱了那个错误。但是，由于某种原因，我的数组不包含任何内容。它只打印出This worked...

这是否可能是因为我在DB中没有每个月？

Answer 1

问题在于作业：

$closedsales[$row['month']] = $row['total'];

$closedsales是mysqli_query返回的结果，它不是您可以分配的数组。为此使用不同的变量。

MYSQLI_QUERY没有返回值

1 个答案: