Question

我有一个查询，可以获取我需要在网页上显示的一些数据。这是我的疑问：

$sql1 = "SELECT CAST([Series] AS INT) AS Series
      ,[Master Supplier Title]
      ,[Fund Name]
      ,CAST([Agreement_ID] AS INT) AS Agreement_ID
      ,CAST([Tier_ID] AS INT) AS Tier_ID
      ,[Retro_to_1]
      ,CAST([Payments per Year] AS INT) AS [Payments per Year]
      ,[Condition Unit of Measure]
      ,CAST([Condition Minimum] AS INT) AS [Condition Minimum]
      ,CAST([Condition Maximum] AS INT) AS [Condition Maximum]
      ,CAST([Incentive Multiplier] AS DEC(5,4)) AS [Incentive Multiplier]
  FROM [Test].[dbo].[vExample]
  WHERE [Master Supplier Title] = '$supp' AND [Series] = 1 AND [Fund Name] = '400P' AND [Agreement_ID] = 2
  ORDER BY [Master Supplier Title]";

然后我使用这段代码来显示所需的结果：

<?php foreach ($pdo->query($sql1) as $supp11) { ?>
            <label>Agreement ID:</label><input value="<?php echo $supp11['Agreement_ID'];?>" readonly><br><br><br>
            <table>
                <tr>
                <thead>
                    <th></th>
                    <th></th>
                    <th></th>
                    <th></th>
                    <th></th>
                    <th></th>
                    <th></th>
                </thead>
                </tr>
                <?php foreach ($pdo->query($sql1) as $supp22) { ?>
                <tr>
                <tbody>
                    <td><?php echo $supp22['Tier_ID'];?></td>
                    <td><?php echo $supp22['Incentive Multiplier'];?></td>
                    <td><?php echo $supp22['Condition Minimum'];?></td>
                    <td><?php echo $supp22['Condition Maximum'];?></td>
                    <td><?php echo $supp22['Condition Unit of Measure'];?></td>
                    <td><?php echo $supp22['Retro_to_1'];?></td>
                    <td><?php echo $supp22['Payments per Year'];?></td>
                </tbody>
                </tr>
                <?php } ?>
            </table>
            <?php } ?>

您看到的变量$supp是我从以前的代码中的下拉列表选择中获得的值。

每当我进行下拉选择时，它会显示正确的数据。但是，我只需要它一次显示在一个表中。例如，选择可以在数据库的多行中。因此，只要它在表中显示结果，它就会在表中显示数据库中下拉选择的次数。因此，如果我的$supp变量中的值在数据库中被看到8次，我只需要在一个表中的那个信息（8行）。不像我目前得到的那样，有八个不同的时间。

如何解决此问题？

Answer 1

我认为问题是你有一个双循环，导致重复。如果要将所有结果作为要处理的集合返回，则应使用预准备语句。

<?php 
$stmt = $pdo->prepare($sql1);
$stmt->execute();
$results = $stmt->fetchAll();
?>
<label>Agreement ID:</label><input value="<?php echo $results[0]['Agreement_ID'];?>" readonly><br><br><br>
<table>
<tr>
<thead>
    <th></th>
    <th></th>
    <th></th>
    <th></th>
    <th></th>
    <th></th>
    <th></th>
</thead>
</tr>
<?php foreach ($results as $supp22) { ?>
<tr>
<tbody>
    <td><?php echo $supp22['Tier_ID'];?></td>
    <td><?php echo $supp22['Incentive Multiplier'];?></td>
    <td><?php echo $supp22['Condition Minimum'];?></td>
    <td><?php echo $supp22['Condition Maximum'];?></td>
    <td><?php echo $supp22['Condition Unit of Measure'];?></td>
    <td><?php echo $supp22['Retro_to_1'];?></td>
    <td><?php echo $supp22['Payments per Year'];?></td>
</tbody>
</tr>
<?php } ?>
</table>

对fetchAll()的调用应该返回一个可以循环的结果数组。查看索引0处的第一条记录可以让您获得最顶层标签的Agreement_ID参数。

Answer 2

您可以在查询中使用DISTINCT以确保只获得每行的一个副本，但这可能会太慢，具体取决于数据库的大小和结构。我可能主张在<tbody>循环周围添加一个IF语句。例如：

<?php
$shown = array(); // keeps track of which values were already displayed
foreach ($pdo->query($sql1) as $supp22) { 
  // this just has to be a value (or combination of values) 
  // that you don't want repeated.
  // Since I don't know the exact structure of your tables, I've just 
  // appended all the variables together into one long string. If 'Tier_ID'
  // is a unique row identifier you'd want to exclude it from here.
  $dont_repeat = $supp22['Tier_ID'].$supp22['Incentive Multiplier'].$supp22['Condition Minimum'].$supp22['Condition Maximum'].$supp22['Condition Unit of Measure'].$supp22['Retro_to_1'].$supp22['Payments per Year'];
  // here we only display the row if it wasn't already shown
  if ( !in_array($dont_repeat, $shown) ) {
    // add it to our $shown array so we don't display the same data again
    $shown[] = $dont_repeat;
    ?>
    <tr>
    <tbody>
    <td><?php echo $supp22['Tier_ID'];?></td>
    <td><?php echo $supp22['Incentive Multiplier'];?></td>
    <td><?php echo $supp22['Condition Minimum'];?></td>
    <td><?php echo $supp22['Condition Maximum'];?></td>
    <td><?php echo $supp22['Condition Unit of Measure'];?></td>
    <td><?php echo $supp22['Retro_to_1'];?></td>
    <td><?php echo $supp22['Payments per Year'];?></td>
    </tbody>
    </tr>
    <?php 
    } 
  ?>
  </table>
  <?php 
  } 
/* be tidy and */ unset($shown, $dont_repeat);
?>

在不使用循环的情况下从查询显示PHP数据

2 个答案: