display database field in textbox
<p>I am trying to display a database input in a textbox for editing.  I cant seem to get it working?!
The page links from a forum post edit button.  Firstly, I don't know how to get the database info for that particular field to be displayed and also I don't understand how to make sure the post that the user clicks to edit is the post that is displayed. </p>

<p>My code looks like this</p>

<pre><code>&lt;?php
#data preparation for the query 
$id=$_GET['id']; 

# selects title and description fields from database 
$sql = "SELECT a_answer FROM $tbl_name WHERE question_id='$id'"; 
$result=mysql_query($sql);
$rows=mysql_fetch_array($result);

?&gt; 
&lt;h3&gt;Edit&lt;/h3&gt; &lt;form action="save_edit.php" enctype="multipart/form-data" method="post" name="myForm" /&gt;   
&lt;table&gt;     

&lt;tr&gt;       
&lt;td&gt;&lt;b&gt;Answer&lt;/b&gt;&lt;/td&gt;       
&lt;td&gt;&lt;textarea cols="80%" rows="10" name="a_answer"&gt;&lt;?php echo $row['$a_answer']; ?&gt;&lt;/textarea&gt;&lt;/td&gt;   
  &lt;/tr&gt;  
   &lt;/table&gt;   &lt;input name="id" type="hidden" value="&lt;? echo $id; ?&gt;"&gt;   
   &lt;input name="enter" type="submit" value="Edit"&gt; &lt;/form&gt;  

  &lt;?php mysql_close(); ?&gt;
</code></pre>
