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Bug #6738 If statement not liking 0
Submitted: 2000-09-13 16:32 UTC Modified: 2000-09-13 17:00 UTC
From: coolfr3ak at hotmail dot com Assigned:
Status: Closed Package: *General Issues
PHP Version: 4.0.2 OS: Linux 6.1
Private report: No CVE-ID: None
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 [2000-09-13 16:32 UTC] coolfr3ak at hotmail dot com 
if i have

define("_DEFINED_CONSTANT", 0)

function xyz ($committype = _DEFINED_CONSTANT)
{
  if ($committype = _DEFINED_CONSTANT)
  {
    ...do stuff...
  }
}

then the if statement fails to recognise that when a 0 = 0, the statement should be true, instead it returns zero, which is rather anoying...

Its a pretty obvious problem - you can try it yourself just put 

$pug = 0
if ($pug = 0)
{ echo "foo"; }

an it won't recognise it...
(it crashes if you ask it for 'if (0 = 0) {...}' for some reason - perhaps another bug?

IcK

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 [2000-09-13 16:57 UTC] eriksson@php.net 
This is not a bug in PHP

You should use '==' when you compare values.

I cannot reproduce a crash in PHP when assigning 0 to 0.

-\- David Eriksson -/-
 [2000-09-13 17:00 UTC] sniper@php.net 
More info can be found here:

http://www.php.net/manual/language.operators.comparison.php

--Jani
 
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