I am in set cart id parti am here. inside cartstored cart_id was : 47552 i am here. inside login status 0 SELECT IF(EXISTS(SELECT * FROM `cart` WHERE user_id=1 and tmp_id='{25AECFF6-0949-1AD1-A19F-8C694EEBC292}'),1,0) as result; This is existing guid : {25AECFF6-0949-1AD1-A19F-8C694EEBC292} This is existing : 47552 This is new guid is : {25AECFF6-0949-1AD1-A19F-8C694EEBC292} The extracted cart_id is :47552 in sessionCurrent cart_id is : 47552