Question

In an ExpressionEngine template, I’m setting a PHP session variable in a javascript file like this: (Yes, EE will parse the PHP and add plug the values to the javascript)

<?php session_start(); ?>  
function check_someone_else_result(data) {
  waiting_list_flag = false;
   <?php $_SESSION['waiting_list_flag'] = false;  ?>
  if(data.CanBuy=='YES'){
    show_for_someone_else();
  } else {
    waiting_list_flag = true;
   <?php $_SESSION['waiting_list_flag'] = true;  ?>
    $('#sm_content .oblcontent').html($('#waiting_list').html());
    $('#sm_content a.closebtn').click(function(){location.reload(true);});
    $('#sm_content a.yeswaitbtn').click(function(){show_for_someone_else();});
  } // if(data.CanBuy=='YES')
} // function check_someone_else_result

Now, in the show_for_someone_else() function, I’m redirecting to another page that loads another javascript file and I’m trying to set a javascript variable to the same value that I set the session variable to above.

<?php session_start(); ?>
   var CART_URL          = '{site_url}store/checkout/cart/';
   $(document).ready(function(){
     // attach the validationEngine to the form
     $("#voucher_form").validationEngine('attach', {
                      scroll: false
     }); // $("#voucher_form").validationEngine

     // handles the NExt button click
     $('#checkout-step-billing a').click(function(){
      $('#checkout-step-billing .voucher_form').submit();
     }); // $('#checkout-step-billing a').click

     // handles keypresses in all the fields in the form to submit the 
     // form when the press enter
     $("#checkout-step-billing .voucher_form input").keypress(function (e) {
      if ((e.which && e.which == 13) || (e.keyCode && e.keyCode == 13)) {
        $('#checkout-step-billing .voucher_form').submit();
        return false;
      } else {
        return true;
      }
     }); // $("#checkout-step-billing .voucher_form input").keypress

     // set the wait_list_flag from the session variable
     var wait_list_flag = <?php $_SESSION['waiting_list_flag']; ?>   
   }); // $(document).ready

But I am not getting anything at all.

How do I need to do this?

Answer 1

 var wait_list_flag = <?php $_SESSION['waiting_list_flag']; ?>   

should be

 var wait_list_flag = <?php echo $_SESSION['waiting_list_flag']; ?>;
                            ^^^^                                   ^

Without the echo, the PHP block doesn’t output anything, so nothing gets inserted into the Javascript block. You’re also missing the trailing semicolon in the javascript, which may also cause a fatal parse error.