jQuery Ajax not passing variable -

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i'm trying pass data via ajax function can unset $_session value , not working. jquery part works , "removes" <div> page properly. however, ajax in background not working. added javascript alert testing , not fire.

jquery code:

     //this function "removes" individual order item in basket       $("#basketitemswrap").on("click", "li img.delete", function(event) {         var productidvalsplitter   = (this.id).split("_");         var productidval       = productidvalsplitter[1];           $("#notificationsloader").show();         $.ajax({           type: "post",           url: "includes/ajax/functions.php",         data: { productid: productidval, action: "deletefrombasket"},           success: function(theresponse) {            $("#order_" + productidval).hide("slow",  function() {             $(this).remove();             calc();           });           $("#notificationsloader").hide();         },         complete: function(){         },         error: function(xhr, status, error){             var err = eval("(" + xhr.responsetext + ")");             alert(err.message);         }         });        });

functions.php code:

<?php session_start();   if ($_post['action'] == "deletefrombasket"){ ?>     <script type="text/javascript">     alert("test");         </script> <?php     unset($_session['order_parts'][$_post['productid']]); } ?>

apparently not passing "deletefrombasket" because notenter if check.

also, if add "echo $_post['action'];" on functions.php doesn't display anything.


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