title: Include external PHP script into Shopify store via webhook
body: <p>I am currently working on a Shopify store. I have a PHP script hosted on another server that I need to display on my shopify store.</p>
  
  <p>The script I am using has to be included into a page via PHP. </p>
  
  <p>This has to go in the header:</p>
  
  <pre><code>&lt;?php require 'doo_inc/class/dooMCForm.php';?&gt;
  </code></pre>
  
  <p>And this goes within the body where you wish to display the button:</p>
  
  <pre><code>&lt;?php  echo $DooForm-&gt;doo_load_form(true, true, true,'blueBtn', Click here to Subscribe); ?&gt; 
  </code></pre>
  
  <p>I understand I should use webhooks to display the PHP on the website but I really am struggling with this...</p>
  
  <p>I need to have the modal box loading onload rather than by a button aswell...</p>