使用php链接语法错误

Question

我写了一个基本的循环在PHP中工作，我想要什么，但现在我试图添加一个链接，但无法获得正确的语法和我发现语法不起作用的例子对我而言，不断收到错误。如果任何人都可以告诉我我错误的地方，那将是惊人的。预先感谢您是否能够提供帮助！

所引发错误的代码是

<a href=\"addcomment.php?id="'. $row['postid'] .'\">' "Add Comment" '</a>"); 

和完整的代码。

<?php 
    include("connect.php"); //connect to database 
    //create query 
    $get_messages_query = $db->prepare(" 
     SELECT * FROM `blogposts` 
     ORDER BY `postid` DESC 
     LIMIT 5 
     "); 
    //Homepage should have last 5 blog posts this will take the //last 5 entered into the database and put them into an //array 

    $get_messages_query->execute(); 
    //executes query above 

    while($row = $get_messages_query->fetch()) 
    { 
     $blog_post_history .= 
     '<div class="post" id="post"> 
      <h1>'. $row['title'] .' </h1> 
      <h2>' . $row['author'] . '</h2> 
      <p>'. $row['content'] . '</p> 
      <a href=\"addcomment.php?id="'. $row['postid'] .'\">' "Add Comment" '</a>"); 

     </div>'; 
    } 

    // while loop that takes info from db query and puts the //information in its own div with title andauthor having a //unique heading for css as well as a p for the content of //the blog. This loop puts the information in //$blog_post_history which is called upon in the div code 
    //below 
?> 

Answer 1

有问题的报价在这里

$blog_post_history .= 
    '<div class="post" id="post"> 
     <h1>'. $row['title'] .' </h1> 
     <h2>' . $row['author'] . '</h2> 
     <p>'. $row['content'] . '</p> 
     <a href="addcomment.php?id='. $row['postid'] .'">Add Comment</a> 
    </div>'; 

Answer 2

while($row = $get_messages_query->fetch()) 
{ 
    $blog_post_history .= 
    '<div class="post" id="post"> 
     <h1>'. $row['title'] .' </h1> 
     <h2>' . $row['author'] . '</h2> 
     <p>'. $row['content'] . '</p> 
     <a href="addcomment.php?id='. $row['postid'] .'"> Add Comment </a> 
    </div>'; 
}