Question

我有以下語法，用於在PHP顯示MySQL查詢：

function get_dayssincecapture($db) 
    {  
    $result = $db->query("SELECT DATEDIFF(now(), sarrive)as days,count(loadnumber) as loads from v2loads where adminstatus='captured' group by DATEDIFF(now(), sarrive) "); 
    return $result; 
    } 
    $dayssincecapture = get_dayssincecapture($db); 

顯示語法：

<table border=1> 
    <tr> 
    <? while($row = $dayssincecapture->fetch(PDO::FETCH_ASSOC)) { ?> 
    <td><? echo $row['days']; ?><br><? echo $row['loads']; ?></td> 
    <? } ?> 
    </tr> 
</table> 

這將產生下面的屏幕輸出

我怎樣才能改變由表語法將days字段作爲行標題並將加載字段作爲我的表的第二行？

所以我想將是：

感謝一如既往，

Answer 1

嘗試用：

<?php 
$dayssincecapture = get_dayssincecapture($db); 
$data = array('days' => array(), 'loads' => array()); 

while($row = $dayssincecapture->fetch(PDO::FETCH_ASSOC)) { 
    $data['days'][] = $row['days']; 
    $data['loads'][] = $row['loads']; 
} 
?> 

<table style="border: 1px solid #000"> 
    <tr> 
     <td>Days</td> 
     <?php foreach ($data['days'] as $day) { ?> 
      <td><?php echo $day; ?></td> 
     <?php } ?> 
    </tr> 
    <tr> 
     <td>Loads</td> 
     <?php foreach ($data['loads'] as $load) { ?> 
      <td><?php echo $load; ?></td> 
     <?php } ?> 
    </tr> 
</table> 

Answer 2

如果你想在MySQL中執行這種類型的轉變，那麼你將以的數據爲樞軸。 MySQL不具有旋轉功能，但你可以使用聚合函數與CASE聲明覆制此：

select 
    count(case when DATEDIFF(now(), sarrive) = 1 then loadnumber end) as Day_1, 
    count(case when DATEDIFF(now(), sarrive) = 2 then loadnumber end) as Day_2, 
    count(case when DATEDIFF(now(), sarrive) = 3 then loadnumber end) as Day_3, 
    count(case when DATEDIFF(now(), sarrive) = 4 then loadnumber end) as Day_4, 
    count(case when DATEDIFF(now(), sarrive) = 5 then loadnumber end) as Day_5, 
    count(case when DATEDIFF(now(), sarrive) = 6 then loadnumber end) as Day_6, 
    count(case when DATEDIFF(now(), sarrive) = 7 then loadnumber end) as Day_7 
from v2loads 
where adminstatus='captured' 

你也可以這樣寫代碼，一份準備好的聲明的內部動態創建此，因爲值將是未知的。

Answer 3

你可以試試：

<?php 

while($row = $dayssincecapture->fetch(PDO::FETCH_ASSOC)) { 
    $days_row .= "<td>" . $row['days'] . "</td>"; 
    $loads_row .= "<td>" . $row['loads'] . "</td>"; 
} 

?> 
<table> 

    <tr> 
    <td>Days</td> 
    <?php echo $days_row; ?> 
    </tr> 
    <tr> 
    <td>Loads</td> 
    <?php echo $loads_row; ?> 
    </tr> 
</table>