SUM mysqli 查询返回数组

Question

我想要的是将点列中的所有值相加 这些存储为 INT(4)

但是当我尝试显示结果时它的回显数组

$pipq = mysqli_query($con,"SELECT `points` FROM `table` WHERE `result` !='2'");
 $pips = mysqli_fetch_assoc($pipq);
 $sum = 0;
 do {
 $sum += $pips[0];
 } while($pips = mysqli_fetch_assoc($pips));

任何帮助将不胜感激

Answer 1

1.使用 SQL 查询本身，您可以执行以下操作：-

$pipq = mysqli_query($con,"SELECT SUM(`points`) as total_mark FROM `table` WHERE `result` !='2'");
$pips = mysqli_fetch_assoc($pipq);
echo $pips['total_mark'];

2.您的代码在以下更改后也可以工作：-

$pipq = mysqli_query($con,"SELECT `points` FROM `table` WHERE `result` !='2'");
$sum = 0;
while($pips = mysqli_fetch_assoc($pips)){ // use while only
  $sum += $pips['points']; // use column-name here
}
echo $sum;

注意：- 第一个比第二个好得多。所以使用第一个。