PHP $SITE_URL Messing - php

Question

We are hosting a WordPress site on our own Windows server its working fine, but few days back realized that there is a PHP contact form which sends a PDF attachments with radio buttons, which works fine when it was Hosted on Godaddy, now the problem is radio buttons are not loaded cos I see the URL is
<img src=\"$SITE_URL/patientform/ckedimage.png\"/>
and the $site_url is
$SITE_URL="http://".$_SERVER['SERVER_NAME'];
I think its pulling up the local server name,how do I set the Site URL as domain.com ?
whole code
<?php
$SITE_URL="http://".$_SERVER['SERVER_NAME'];
$cnt1=1;
foreach($caffinarr as $sympKey=>$sympVal6)
{
if(in_array($sympVal6, $caffinevalue))
{
$html .="<td><img src=\"$SITE_URL/patientform/ckedimage.png\"/>
<td>$sympVal6 </td>";
}
else
{
$html .="<td><img src=\"$SITE_URL/patientform/uncheckedimage.png\"/>
<td >$sympVal6</td>";

Answer 1

Fix your code to
<?php
$SITE_URL = 'http://'.$_SERVER['SERVER_NAME'];
$dir = "/patientform/ckedimage.png";
//echo $SITE_URL.$dir;
?>
<img src="<?php echo $SITE_URL.$dir; ?>" />
This is how your code would be:
<?php
$SITE_URL = 'http://'.$_SERVER['SERVER_NAME'];
$dir = "/patientform/ckedimage.png";
$dir_uncheck = "/patientform/uncheckedimage.png";
//echo'<img src="'.$SITE_URL.$dir.'" />';
$cnt1=1;
foreach($caffinarr as $sympKey=>$sympVal6)
{
if(in_array($sympVal6, $caffinevalue))
{
$html ='<td><img src="'.$SITE_URL.$dir.'" />
<td>'.$sympVal6.'</td>';
echo $html;
}
else
{
$html ='<td><img src="'.$SITE_URL.$dir_uncheck .'" />
<td>'.$sympVal6.'</td>';
echo $html;
?>