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  • Well you might want to read up on with ISSET() actually does... Commented Aug 21, 2015 at 7:32
  • I am confused as to what you are trying to do. Can you make it more clear? Why are you checking for isset of a POST variable without sending any POST request? Commented Aug 21, 2015 at 7:33
  • @AcharyaAnurag sorry i didn't copy all my code, there are submit button too, so if the user click the submit button, it will post the value. Commented Aug 21, 2015 at 7:37
  • How do you want it to be if user enters 0 ? Commented Aug 21, 2015 at 7:38
  • @SerhatAkay then the value will be 0. thank you Commented Aug 21, 2015 at 8:06