PHP to duplicate web page AFTER all PHP and JAVASCRIPT has run

I want to duplicate one of my web pages to a different URL, but I want it copied AFTER all of the PHP includes have finished running on the page. Here is what I have so far, but of course it just copies the source code of the page and not resulting page AFTER all PHP includes have run.

The page I want to copy has 90 different data insertions using PHP includes so if course it loads really slow. So I want to copy the FINISHED page after all 90 includes are done loading.

This is what I tried first:

     <?php

     $source =file_get_contents('web-page.htm');

     $destination = 'new-web-page.htm';

     $handle = fopen($destination, "w"); 

     fwrite($handle, $source);

     fclose($handle); 

      ?>

Here is an example of one of the 90 different PHP includes on the original page:

       <?php include 'data.txt';?>

OK - I solved it this way:

        <?php

         $ch = curl_init();

         curl_setopt($ch, CURLOPT_URL, "https://example.com/example.htm");
         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

         $result = curl_exec($ch);
         if (curl_errno($ch)) {
         echo 'Error:' . curl_error($ch);
         }
         curl_close ($ch);

         $destination = 'new-page-after-all-php-and-javascript-has-run.htm';

          $data = $result; 

           $handle = fopen($destination, "w"); 

           fwrite($handle, $data);

           fclose($handle); 


            ?>