how to avoid the calling a function with a null in php

Question

I have an html form contains some inputs. In my PHP function I have some conditions and depended if some inputs are set on or not I call the right function. Here is the example :

if($a)
   //Call the function 1
elseif($a == 0)
   //Call the function2

 if($b)
   //Call the function 1
elseif($b == 0)
   //Call the function2

So i have two HTML inputs when one of them is setted i call the right function. The problem is when one of them is empty it's still calls the function and in the condition i set == 0 and not !$aper example. So someone can help me please Thanks.

unclear - when which is empty, which function is being called? — BIU, Nov 02 '14 at 21:49
is the case of all the inputs when they are empty is still call the functions in the `== 0` condition. — Karimx, Nov 02 '14 at 21:51

score 2 · Answer 1 · edited May 23 '17 at 10:25

2

Check this out How do the PHP equality (== double equals) and identity (=== triple equals) comparison operators differ?

You may want to compare using === for the typesafe comparison between the input and the number 0

edited May 23 '17 at 10:25

Community

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answered Nov 02 '14 at 21:51

BIU

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I solved the problem. I have to set "0" and not 0. Thanks – Karimx Nov 02 '14 at 21:55

how to avoid the calling a function with a null in php

1 Answers1