Fatal error: Array callback has to contain indices 0 and 1
<p>I am getting this error:</p>

<blockquote>
  <p>Fatal error: Array callback has to contain indices 0 and 1 in C:\xampp\htdocs\phpprojects\plapp\worker.php on line 53</p>
</blockquote>

<p>How can I solve that problem? What's wrong with what I am doing here?</p>

<pre><code>$results = mysql_query("SELECT asin_link FROM work WHERE email=$w_email");
      while($row = mysql_fetch_array($result)) {
      $work_link = $row['asin_link'];
      echo '&lt;a href="'.$work_link.'" target="'.$work_link.'"&gt;Visit Work link&lt;br&gt;&lt;/a&gt;';
      echo '&lt;form action="" method="post"&gt;
        ASIN Number: &lt;input type="text" name="asin"&gt;&lt;br&gt;
        &lt;input type="submit" value="Submit" name="submit"&gt;
      &lt;/form&gt;';}
      if (isset($_POST['submit'])) {
        $asin = $_POST('asin');
        $qu ="INSERT INTO work (asin, email, asin_link) VALUES ('$asin', '$w_email','$work_link')";
        if (mysql_query($qu)) {
        echo "Your ASIN was received! Thanks";
      }
      }
</code></pre>