If value "1" display picture

The result that I need to reach

If the value in the "price" column is "1" and in the "code" column is 5, then display the "images/imagex.png" image. If the value in the "price" column is "2" and in the "code" column is 5, then it will show the image "images/imagey.png".

Information: The table name in the database is "mag", it is updated every 5m, so every 5m the php page would have to be updated also with new information as well.

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I've tried a lot of things and looked for several guides, so far I understand that I'll need to use a JSON, right? I do not know very well about it, but I understood that it updates without needing to refresh the page (f5).

The table looks like this:

  <div class="tg-wrap"><table class="tg">
  <tr>
  <th class="tg-031e" colspan="3"><img src="images/123_01.png" alt=""></th>
  </tr>

<tr>
    <td class="tg-031e"><img src="images/123_02.png" alt=""></td>
    <td class="tg-031e"><img src="images/123_03.png" alt=""></td>
    <td class="tg-031e"><img src="images/1234_04.png" alt="">
</td>
</tr>
</table>
</div>

With the code it would look like this:

<?php
$sql = "SELECT * FROM mag2";
$result = mysql_query($sql)or die(mysql_error());
while ($row = mysql_fetch_array($result)){

// Show images
 <div class="tg-wrap"><table class="tg">
      <tr>
   <th class="tg-031e" colspan="3">if($row['price, code']=='1, 5'){
 print "<img src='images/123_01.png'/>";
}
></th>
      </tr>

    <tr>
        <td class="tg-031e">if($row['price, code']=='3, 4'){
 print "<img src='images/123_02.png'/>";
}
</td>
        <td class="tg-031e">if($row['price, code']=='54, 12'){
 print "<img src='images/123_03.png'/>";
}
</td>
        <td class="tg-031e">if($row['price, code']=='11, 31'){
 print "<img src='images/123_04.png'/>";
}
</td>
    </tr>
    </table>
    </div>
} // End while loop
?>

I tried to explain everything I can, I apologize for being a bit confused, I'm starting and I really tried my best, but I do not find a solution. Thanks for your help!