Question

我最近学会了通过php创建动态链接，但我今天的问题是我不知道如何在php块中执行此操作，例如我知道如何执行此操作：

     <div><a href="blah.php?id=<?php echo $id; ?>">content</a></div>

但是我在php块中的head标签上面这样做，所以基本上我正在为动态内容创建动态链接，本质上我将在主页上动态呈现图像，这是产品的链接。这就是我所拥有的：

    <?php 
     include_once "scripts/connect_to_mysql.php";
     //Select query for latest items
     $dynamic_newest = "";
     $sql = mysql_query("SELECT * FROM products ORDER BY date_added DESC LIMIT 24");
     $productCount = mysql_num_rows($sql); // count the output amount
     if ($productCount > 0) {
          while($row = mysql_fetch_array($sql)){
              $id = $row["id"];
              $pid = $id;
              $category = $row["category"];
              $subcategory = $row["subcategory"];
              $dynamic_newest .= "<a href="THIS IS WHAT I DONT KNOW HOW TO DO"><img src='inventory_images/$pid.jpg' width='100px' height='100px' /></a>";
        }
          } else {
          $dynamic_newest = "<h1>There are no products to display yet.</h1>";
          }
   ?>

这可能很容易，但我找不到它，也许我不是要求魔术谷歌正确的问题。提前谢谢！

Answer 1

逃避问题，改变：

 $dynamic_newest .= "<a href="THIS IS WHAT I DON'T KNOW HOW TO DO"><img src='inventory_images/$pid.jpg' width='100px' height='100px' /></a>";

要：

 $dynamic_newest .= "<a href=\"blah.php?id=$id\"><img src='inventory_images/$pid.jpg' width='100px' height='100px' /></a>";

Answer 2

不确定这是否是您正在寻找的但无论如何..

$dynamic_newest .= "<a href='blah.php?id=$pid'><img src='inventory_images/$pid.jpg' width='100px' height='100px' /></a>";

Answer 3

虽然您现在不使用此功能，但我相信您将来会发现它的用途。稍后，当您需要编写大块预格式化的非PHP文本并想要将php变量添加到其中时，您可以执行以下操作：

echo<<<YOUR_IDENTIFIER

<h1>Hi!</h1>
<form action='post'>
Welcome to my webpage =).
You can place code here as if it were not inside a PHP block,
but you can also use PHP variables. That means you can even
insert quotes like this --> "", though since this is still HTML,
it would be more accurate to use &gt; and &quot;. Your cleanest
bet and best-practice coding method is to {$encapsulate} php
variables in squiggley brackets. You can even
{$encapsulateArrays['likethis']}.
</form>

YOUR_IDENTIFIER;

echo "Back to regular PHP code.";

确保YOUR_IDENTIFIER;之前没有空格或标签。

要回答你的原始问题（与我上面的blabber无关），请务必使用反斜杠\正确转义任何引号，以免意外终止字符串文字。不要忘记{}封装您的变量，即使您正在进行常规echo "My {$variable} here";它也不会影响解析，但会让您更容易调试2个月，当您'重新开始你的下一个项目。

php块中的PHP动态链接

3 个答案: