Send JS values to PHP Session

I have a working php page ([login to view URL]) with an external JS file ([login to view URL]) that calculates 4 values and places them into labels/DIVs correctly. Like this: [login to view URL]('googleMiles').innerHTML = "<b>Estimated Miles:</b>&nbsp;" + [login to view URL][0].legs[0].[login to view URL]; I want to pass these 4 values from JS to and store them into the existing php session. Something like this: $_SESSION[$this->defaultStore]['venue_name'] = $_POST['eventPlace']; I will echo the PHP session values in another page ([login to view URL]). Like this: <?php echo $STORE['venue_name'] != NULL ? $STORE['venue_name'] : "Oops. Something went wrong since we don't see your event location."; ?> One last note. The "[login to view URL]" and "[login to view URL]" are mostly just html. Most of the real php coding is in another "[login to view URL]" file used alongside these pages. The JS variables are "eventPlace", "miles", "durationStr" and "mileage". The PHP session names will be "venue_name", "venue_estMiles", "venue_estTime" and "venue_mileage". I will provide the php and js files along with a link to the working pages. The online file structure is quite complex so it may be easier to just provide these files and have me upload them into place when done.