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Bug #49637 Assigning in an IF statement does not update value for rest of IF
Submitted: 2009-09-23 08:01 UTC Modified: 2009-09-23 08:15 UTC
From: erik at ruigekonijnen dot nl Assigned:
Status: Not a bug Package: Variables related
PHP Version: 5.3.0 OS: Windows XP
Private report: No CVE-ID: None
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From: erik at ruigekonijnen dot nl
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 [2009-09-23 08:01 UTC] erik at ruigekonijnen dot nl
Description:
------------
When you assign a new variable directly into an IF statement, it is not 
updated if you try to read from it in the same statement.

The problem can be supressed by adding an extra set of parentheses, but 
I don't think that should be neccesary.

In the example posted below, this would work just fine:

if ( ( $a = 1 ) && $a > 0 ) {

Reproduce code:
---------------
$a = 0;
if ( $a = 1 && $a > 0 ) {
  echo 'ok';
}
else {
  echo 'wait, what?';
}

Expected result:
----------------
ok

Actual result:
--------------
wait, what?

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 [2009-09-23 08:15 UTC] rasmus@php.net
&& has higher precedence than =
so it is working as expected and as documented at http://php.net/manual/en/language.operators.precedence.php


 
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