title: Prestashop PHP Include in a .tpl does not work
body: <p>I am creating a storefront for a client using Prestashop. Prestashop uses Smarty .TPL files. I read through smarty documentation and scoured the web but all of the suggestions are not working.</p>
  
  <p>I first made a site using regular .php pages and I am including the header.php on every page.</p>
  
  <p>I then made a directory for prestashop and got it set up. I edited the header.tpl file and was able to hard code in the header.php code. The problem with this is; when I want to edit the header (nav bar, images, social media), I will have to edit it in two different places. So I tried to "Include" my header.php file.</p>
  
  <p>Though, when I try using smarty's {include_PHP "file.php"} and/or {PHP}include...{PHP}, Prestashop errors out and gives me a blank white page - no errors are given - (in chrome it gives me a "server error") until I take out the includes.</p>
  
  <p>I tried replacing the entire header.tpl code with a smarty include and another piece of code that had a header hook, but none of these worked. Any suggestions? I just want one header where I only have to edit it once to make changes.</p>
  
  <p>Using Prestashop v 1.4.4.0</p>
  
  <p>Edit: I changed allow_php to true from false.  Now it's trying to add the file, though it says it can't find the file.  I placed it next to header.tpl and just used:</p>
  
  <pre><code>{php}
              include('navBar.php'); 
         {/php} 
  </code></pre>