带有嵌入html的php foreach抛出错误答案

【问题标题】：php foreach with inlayed html throwing errors带有嵌入html的php foreach抛出错误
【发布时间】：2014-02-03 04:08:03
【问题描述】：

我正在尝试使用 PDO 从 mysql 中获取数据并将其输出到 html 表中

  <div class="data">
    <table class="table table-striped">
      <?php 
        if($_POST['submit'] && $_POST['search_for'] == "keyword") {
          $stmt = $db->prepare("SELECT * FROM my_tbl WHERE log like '%?%' ORDER BY submission_timestamp DESC");
          foreach($stmt->execute($_POST['search_for']) as $row):
        } elseif($_POST['submit'] && $_POST['search_for'] == "address") {
          $stmt = $db->prepare("SELECT * FROM my_tbl WHERE address like '?' ORDER BY submission_timestamp DESC");
          foreach($stmt->execute($_POST['search_for']) as $row):
        } else {
          foreach($db->query('SELECT * FROM my_tbl ORDER BY submission_timestamp DESC') as $row): 
        }
      ?>
        <tr>
          <td width="10%"><?php echo $row['address'] ?></td>
          <td><?php echo $row['log'] ?></td>
          <td width="10%"><?php echo $row['submission_timestamp'] ?></td>
        </tr>
      <?php endforeach; ?>
    </table>
  </div>

我在 elseif 声明之前只说意外的 '}' 时收到一个错误。

虽然我用的时候

  <div class="data">
    <table class="table table-striped">
      <?php 
          foreach($db->query('SELECT * FROM my_tbl ORDER BY submission_timestamp DESC') as $row): 
      ?>
        <tr>
          <td width="10%"><?php echo $row['address'] ?></td>
          <td><?php echo $row['log'] ?></td>
          <td width="10%"><?php echo $row['submission_timestamp'] ?></td>
        </tr>
      <?php endforeach; ?>
    </table>
  </div>

没有发生错误，代码正常运行，从 mysql 数据库中获取数据并将其显示为 html 表。

我本质上是想根据发送到页面的发布数据来更改表格的输出。

有没有一种方法可以用类似于后面的 if 语句格式化第一个代码，或者我应该在每个 if 语句循环时回显 html（我假设发生错误是因为它正在关闭 foreach 子句什么的）。

【问题讨论】：

标签： php html mysql pdo

【解决方案1】：

<div class="data">
    <table class="table table-striped">
      <?php 
        if($_POST['submit'] && $_POST['search_for'] == "keyword") {
          $stmt = $db->prepare("SELECT * FROM my_tbl WHERE log like '%?%' ORDER BY submission_timestamp DESC");
          $rows = $stmt->execute($_POST['search_for'];
        } elseif($_POST['submit'] && $_POST['search_for'] == "address") {
          $stmt = $db->prepare("SELECT * FROM my_tbl WHERE address like '?' ORDER BY submission_timestamp DESC");
          $rows = $stmt->execute($_POST['search_for'];
        } else {
          $rows = $db->query('SELECT * FROM my_tbl ORDER BY submission_timestamp DESC') ;             
        }
        foreach($rows as $row): 
      ?>
        <tr>
          <td width="10%"><?php echo $row['address'] ?></td>
          <td><?php echo $row['log'] ?></td>
          <td width="10%"><?php echo $row['submission_timestamp'] ?></td>
        </tr>
      <?php endforeach; ?>
    </table>
  </div>

【讨论】：

谢谢。没想到像那样把foreach放在最后。

【解决方案2】：

在您有另一个foreach 语句之前，您应该结束第一个。

所以它看起来像这样。

<div class="data">
<table class="table table-striped">
  <?php 
    if($_POST['submit'] && $_POST['search_for'] == "keyword") {
      $stmt = $db->prepare("SELECT * FROM my_tbl WHERE log like '%?%' ORDER BY submission_timestamp DESC");
      foreach($stmt->execute($_POST['search_for']) as $row):
      endforeach;
    } elseif($_POST['submit'] && $_POST['search_for'] == "address") {
      $stmt = $db->prepare("SELECT * FROM my_tbl WHERE address like '?' ORDER BY submission_timestamp DESC");
      foreach($stmt->execute($_POST['search_for']) as $row):
      //No code here?
      endforeach;
    } else {
      foreach($db->query('SELECT * FROM my_tbl ORDER BY submission_timestamp DESC') as $row): 
    }
  ?>
    <tr>
      <td width="10%"><?php echo $row['address'] ?></td>
      <td><?php echo $row['log'] ?></td>
      <td width="10%"><?php echo $row['submission_timestamp'] ?></td>
    </tr>
  <?php endforeach; ?>
</table>

【讨论】：

我也很好奇这里使用了什么数据库抽象层，因为我熟悉的任何数据库抽象层都不会返回 query 上的结果集，而是返回资源 ID，其中您仍然需要执行获取，以指示您希望返回的结果集的类型，即关联数组、对象等...
我认为他实际上想要做的是使用底部代码作为他从顶部开始的foreach 的主体。
@Ohgodwhy 我认为它是 PDO。它的语句对象实现了Iterable。
@Barmar 是的，这就是我想要做的。我希望我可以基于条件语句启动一个 foreach，然后其余的会失败，然后我可以输出我的表数据并在完成后结束它。