您好,盖伊即时通讯(雨)我是编程(php)的新手。我想对数据库中的值求和并将其乘以html(php form table)中具有相同id的行,这很令人困惑,因此请给出输出。
我得到的是
A. Sample 1
1. 100 = 200
2. 100 = 200
B. Sample 2
1. 100 = 200
2. 100 = 200
3. 100 = 200
B. Sample 3
1. 100 = 200
2. 100 = 200
3. 100 = 200
4. 100 = 200
我想得到的是
B. Sample 2
1. 100 = 300
2. 100 = 300
3. 100 = 300
C. Sample 3
1. 100 = 400
2. 100 = 400
3. 100 = 400
4. 100 = 400
表格
<?php echo $row["points"];?>
<?php $s=$row["points"]; + $b=$row["points"]; echo $s + $b;?>
答案 0 :(得分:1)
我不是100%肯定这是您要寻找的东西,但我最大的猜测是:
示例:
imageItem
输出:
<?php
$samples = array(
array(100, 150),
array(100, 150, 200),
array(100, 150, 200, 250)
);
$i = 1;
foreach($samples as $sample)
{
$rows = sizeof($sample);
echo "Sample $i: <br>";
$j = 1;
foreach($sample as $row)
{
$val = $row * $rows;
echo "$j. $row = $val <br>";
$j++;
}
$i++;
echo "<br>";
}
?>
答案 1 :(得分:0)
我做到了
<?php
$samples = array(
array($row["points"]),
);
foreach($samples as $sample)
{
$row["points"];
$rows = sizeof($sample);
foreach($sample as $row)
{
$val = $row * $rows;
}
}
?>
现在我需要行来计算数据库生成的表行 例如$ val = $ row * value(表行数)