PHP how come global variable does not work when utlizing ajax to fetch content? -

so have code snippet.

function get_box_ajax() {     global $box;      $box = get_box(); // creates box object      ob_start();     get_template( '/filepath/content.php' );     $output = ob_get_clean(); }  // in content.php file  global $box;  <form action="<?php echo box_url( $box->url ); ?>" method="post"> // error on line ... </form> 

so code, getting non-object error on call $box->url. take note done via ajax.

so thought in ajax function have globalized $box , take doesn't seem work? thoughts?

two things:

when get_box_ajax function called? , function get_box do? both things relevant.

i don't think problem whether box global or not (which is), rather if url variable of box being defined or if box being initialized @ all.