PHP中的Foreach循环 - 循环遍历结果数组，将它们显示在HTML中的单个表行中？

Question

我有一个订单表，我正在查询总数，我希望按季度显示它们。这是查询：

SELECT shipping_number, SUM(qty) AS qty, SUM(cost) AS cost, 
QUARTER( TIME ) AS quarter
FROM order_items
WHERE 1 
GROUP BY quarter, shipping_number
ORDER BY quarter, shipping_number

我有一个简单的表格行，我想在其中显示以下结果：

echo "<tr>";
echo '<th colspan="2" style="text-align: right !important; ">TOTAL QUEBEC - EASTERN CANADA</th>';
echo "<th>Amount<br />Quantity</th>";
foreach($results as $r) {
    if($r->shipping_number == "2326244" OR $r->shipping_number == "8451211"){
        if($r->quarter == "1"){ echo "<td>$r->cost $<br />$r->qty</td>"; } else { echo "<td>&nbsp;</td>"; }
        if($r->quarter == "2"){ echo "<td>$r->cost $<br />$r->qty</td>"; } else { echo "<td>&nbsp;</td>"; }
        if($r->quarter == "3"){ echo "<td>$r->cost $<br />$r->qty</td>"; } else { echo "<td>&nbsp;</td>"; }
        if($r->quarter == "4"){ echo "<td>$r->cost $<br />$r->qty</td>"; } else { echo "<td>&nbsp;</td>"; }
    }
}
echo "</tr>";

除此之外，显然foreach循环遍历结果两次，导致不创建4个单元格，但是8。

样本结果

如何立即输出数据

问题

如何在一行上输出它，以便查询和格式化数据，使其仅通过一个循环运行它（或者如何从多个循环输出单行数据？ ）

我该怎么做？

请记住，我有多个可能适用于单个表的shipping_numbers（客户端），因此我需要将所有总计合并为一个结果，除了以季度（月等）分隔 - 但这些是分开的查询）。

Answer 1

您可以在不重写查询的情况下执行此类操作：

location

Answer 2

更改查询以选择每个季度实际上是一个不错的选择。

此查询中的if语句表示＆＃34;如果是x quarter，则获取由新行分隔的数量和成本，否则为0.＆＃34;

SELECT
  IF(QUARTER(TIME) = 1, CONCAT(SUM(qty), '\n', SUM(COST)), 0) as q1,
  IF(QUARTER(TIME) = 2, CONCAT(SUM(qty), '\n', SUM(COST)), 0) as q2,
  IF(QUARTER(TIME) = 3, CONCAT(SUM(qty), '\n', SUM(COST)), 0) as q3,
  IF(QUARTER(TIME) = 4, CONCAT(SUM(qty), '\n', SUM(COST)), 0) as q4,
  shipping_number
FROM order_items
GROUP BY shipping_number, QUARTER(TIME)
ORDER BY shipping_number, QUARTER(TIME)

然后您必须更改回显线以适应查询更改。 nl2br功能会将\n从查询转换为您原始帖子中的<br>。当季度没有结果时，它只会在单元格中放置一个0。

echo "<td>" . nl2br($r->q1) . "</td>";
echo "<td>" . nl2br($r->q2) . "</td>";
echo "<td>" . nl2br($r->q3) . "</td>";
echo "<td>" . nl2br($r->q4) . "</td>";

Answer 3

似乎这样的事情会起作用。

echo "<tr>";
echo '<th colspan="2" style="text-align: right !important; ">TOTAL QUEBEC - EASTERN CANADA</th>';
echo '<th>Amount<br />Quantity</th>';
$quarter = 1;
$it = 0;
$count = count($results);
$quarterPrinted = false;
while ($quarter <= 4) {
    for ($i = $it; $i < $count; $i++) {
        if ($results[$i]->quarter == $quarter
            && ($results[$i]->shipping_number == '2326244' || $results[$i]->shipping_number == '8451211')) {
            echo "<td>{$results[$i]->cost} $<br />{$results[$i]->qty}</td>";
            $it++;
            $quarterPrinted = true;
            break;
        }
    }
    if (!$quarterPrinted) {
        echo '<td>&nbsp;</td>';
    }
    $quarter++;
    $quarterPrinted = false;
}
echo "</tr>";