从数据库获取数据不工作php

Question

This is part of a small project that im working, in this page I getting info from a database, my question(problem) is why this line of code works.

echo '<td><a href="add.php?id=' .$row['id'] .'">' . htmlentities($row['name'], ENT_QUOTES, 'UTF-8') . '</a></td>';

But this one don't work

<td><?php ' ' . htmlentities($row['name'], ENT_QUOTES, 'UTF-8') . ' ' ?> </td>

This is the entire code of the page

 <?php
    require("coneccion.php");
    $id = $_GET['id']; 
    $_SESSION['id'] = $id;



    $query = "SELECT id, name, due, points FROM grades WHERE id = '$id' ";

    try
    {
      $stmt = $db->prepare($query);
      $stmt->execute();
    }
    catch(PDOException $ex)
    {
      die("Error 1" . $ex->getMessage() );
    }

    $rows = $stmt->fetchAll();

    ?>



    <br />
    <a href="add.php">Add</a>  

    <table border="1">
      <tr>
        <th>Name</th>
        <th>Due</th>
        <th>Points</th>
      </tr>
      <?php foreach($rows as $row):
      echo "<tr>";
         echo '<td><a href="add.php?id=' .$row['id'] .'">' . htmlentities($row['name'], ENT_QUOTES, 'UTF-8') . '</a></td>'; 
         ?> 
          <td><?php ' ' . htmlentities($row['name'], ENT_QUOTES, 'UTF-8') . ' ' ?> </td>
          </tr>
         <?php

         endforeach;

Answer 1

Instead of::

<td><?php ' ' . htmlentities($row['name'], ENT_QUOTES, 'UTF-8') . ' ' ?> </td>

try

 <td><?php echo ' ' . htmlentities($row['name'], ENT_QUOTES, 'UTF-8') . ' '; ?> </td>

Notice the echo statement in there, so we can output the content back to the user.