php foreach 与嵌入的 html 抛出错误

Question

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

  <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 声明之前出现了意外的“}”错误。

虽然当我使用时

  <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，代码正常工作，从 mysql 数据库中获取数据并将其显示为 html 表。

我本质上想根据发送到页面的发布数据更改表的输出。

有没有一种方法可以使用与后面类似的 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 子句或其他什么)。

Answer 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>