how to embed javascript in php using this code

hello i am new to JavaScript and i need help with this code of comments system, the idea is to set the page id same as the folder name which is a page id on smarty
example : my pages looks like http://domain.com/video/1245/...
i have this javascript which print the page id 1245 like this

<SCRIPT LANGUAGE="JavaScript">pathis=location.pathname;

new_array=pathis.split("/");

subdirectory=new_array[2]; // 4 is a guess, try others

document.write(subdirectory);</SCRIPT>

Code (markup):

and my php looks like this :

<?php
$page_id = 1; // for example
include("comments/comments_show.php");
include("comments/comments_form.php");
?> 

PHP:

so here i want instead of page_id=1 to use the script code above to use my folder name 1245 ..

any help plz ?

 

your javascript:

   document.location.href = "myphpfile.php?id="+subdirectory;

Code (markup):

And your php file:

<?php
$page_id = $_GET["id"]; //Get the id passed in the url here
include("comments/comments_show.php");
include("comments/comments_form.php");
?>

PHP:

 

Hi! Try This Method.

<?php

$id = '
<script>
document.write("007");
</script>
';

$page_id = $id;

print $page_id;

?>

 

thank you very much ,worked perfectly as i wanted ,here is what i did :

<SCRIPT LANGUAGE="JavaScript">document.location.href = "index.php?module=video&id="+subdirectory;</SCRIPT>
<?php
$page_id = $_GET["id"]; //Get the id passed in the url here
include("comments/comments_show.php");
include("comments/comments_form.php");
?> 

PHP: