jquery - Ajax call not working as expected -

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i'm trying clear session variables after successful call realex ( company processes credit card transaction ). session variables contain shopping cart contents, once transaction successful, want clear out. code follows:

jquery.ajax({                     async: false,                                                            url: templateuri+'/realex_go_pay.php',                                       type: 'post',                     data: {                                                                                  amount: ordertotal,                         orderid: orderid,                         orderkey: orderkey,                         cardtype: type,                         cardnumber: number,                         cardname: name,                         expdate: expiry,                         cvv: cvv,                         issueno: issueno                     },                     success: function(data){                                                 // hide payment indicator.                         jquery('.realex_payindicator').hide();                         data = data.split("|");                         if (data[0] == '00'){                                                                                                                                                                        // empty shopping cart.                             jquery.ajax({                                 async: false,                                                                                                        url: templateuri+'/realex_empty_cart.php'                                                                                            });                             self.location = thankyoupage+'?order='+orderid+'&key='+orderkey;                                                                                                                     }else{                             alert(data);                                                     }                                            }                 });

the first call realex_go_pay.php working no problem. second call realex_empty_cart.php not seem working. in realex_empty_cart.php, have 2 lines of code:

unset($_session['cart']); unset($_session['coupons']);

i think archer has solution in comment, reason caching. default, jquery.ajax allow browser cache response requests. means not communicate server. add 

cache: false

to options in code force go server. 

success: function(data){                             // hide payment indicator.     jquery('.realex_payindicator').hide();         data = data.split("|");         if (data[0] == '00'){                                                                                                                                                    // empty shopping cart.             jquery.ajax({                 async: false,                                                                                        cache: false,                    url: templateuri+'/realex_empty_cart.php'                                                                            });             self.location = thankyoupage+'?order='+orderid+'&key='+orderkey;                                                                                                     }else{             alert(data);                                     }                            }

(see http://api.jquery.com/jquery.ajax/ more info)

owen


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