Fatal error: Using $this when not in object context

I’m attempting to pass a Smarty var to a php program.



In Smarty I have :



{assign var=smarty_var_get value=$po.value}



In my php program I have:



session_start();
$smarty_var = $this->get_template_vars('smarty_var_get');
echo '$po.value = ';
echo $smarty_var;
?>




The php program is at the cart’s root level.

When I take the link to the php program I get:



Fatal error: Using $this when not in object context

in /home/crystal/public_html/sandbox/Test.php on line 3




It seems like I need some include to hook up with the Smarty logic.