title: PHP: How to excute query without form postback?
body: <p>I have a form in which i want to do the validations. But there is a field which i want to validate writing a query. I dont want the form to postback because after postback all the values filled in the form are lost. Is there any way i can write a query without postback or if i have to postback how to retain the values ? Please help</p>