I want to use some variables to reference images in my code. It's suppose to make the code more efficient. I'm having trouble understanding how to set it up. I have a config.php file created for the variables, like this:

PHP Code:
<?
$logo = <img src = images/"logo.gif" />
$side_logo = <img src= images/"side-logo.gif" />
$s_logo = <img src= images/"s-logo.gif" />
?>
I want to use these in my program code now. The original code looks like this:

PHP Code:
 public function DisplayHeader()
  { 
<? 
  <table width="100%" cellpadding="12" 
         cellspacing="0" border="0">
  <tr bgcolor ="black">
    <td align ="left"><img src = "logo.gif" /></td>
    <td>
        <h1>TLA Consulting Pty Ltd</h1>
    </td>
    <td align ="right"><img src = "logo.gif" /></td>
  </tr>
  </table>
<?php
  
}
To use the variables now, do I want to make it something like this?

PHP Code:
public function DisplayHeader()
  {
    include 
"config.php";
  
  echo 
"<table width=\"100%\" cellpadding=\"12\" 
         cellspacing=\"0\" border=\"0\">
  <tr bgcolor =\"black\">
    <td align =\"left\"><img src = \""
.$logo."\" /></td>
    <td>
        <h1>TLA Consulting Pty Ltd</h1>
    </td>
    <td align =\"right\"><img src = \""
.$logo."\" /></td>
  </tr>
  </table>"

  

or this section;

PHP Code:
public function 
      
DisplayButton($width,$name,$url,$active true)
  {
    if (
$active) {
      echo 
"<td width = \"".$width."%\">
      <a href=\""
.$url."\">
      <img src=\"s-logo.gif\" alt=\""
.$name."\" border=\"0\" /></a>
      <a href=\""
.$url."\"><span class=\"menu\">".$name."</span></a>
      </td>"
;
    } else {
      echo 
"<td width=\"".$width."%\">
      <img src=\"side-logo.gif\">
      <span class=\"menu\">"
.$name."</span>
      </td>"
;
    } 

and replace with this code?

PHP Code:
public function 
      
DisplayButton($width,$name,$url,$active true)
  {
    include 
"config.php";
    
    echo 
"if ($active) {
      "
<td width = \"".$width."%\">
      <a href=\""
.$url."\">
      <img src =\""
.$s_logo."\" alt=\"".$name."\" border=\"0\" /></a>
      <a href=\""
.$url."\"><span class=\"menu\">".$name."</span></a>
      </td>"
;
    } else {
      
"<td width=\"".$width."%\">
      <img src = \""
.$s_logo."\" />
      <span class=\"menu\">"
.$name."</span>
      </td>"
    
}  
  } 
Is this the right way to do this?