Re: [PHP-DEV] PHP 4.0 Bug #8348 Updated: $val = TRUE AND FALSE; // Will always give TRUE !! From: Adam Trachtenberg (adam <email protected>)
Date: 12/21/00

You should read this page in the manual about Operator Precedence.

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

AND has a lower precedence than =, so $val = TRUE AND FALSE is the same as
($val = TRUE) and FALSE.

Also, you want && (logical and) instead of & (bitwise and) in your later
example. (Although, & does have an even tighter binding than &&, so that
"works," too.)

-adam

On 21 Dec 2000 samuel.blume <email protected> wrote:

> ID: 8348
> User Update by: samuel.blume <email protected>
> Status: Open
> Bug Type: Scripting Engine problem
> Description: $val = TRUE AND FALSE; // Will always give TRUE !!
>
> Ups... a little typo above // bool(false) should be // bool(true)
>
>
> $val = TRUE AND FALSE; //Will always give TRUE !!
> var_dump($val); // = bool(true)
>
> using () or & will have the right effect
> $val = (TRUE AND FALSE);
> var_dump($val); // = int(0)
>
> $val = TRUE & FALSE;
> var_dump($val); // = int(0)
>
>
> Previous Comments:
> ---------------------------------------------------------------------------
>
> [2000-12-21 06:57:03] samuel.blume <email protected>
> Folling is unusual:
>
> $val = TRUE AND FALSE; //Will always give TRUE !!
> var_dump($val); // = bool(false)
>
> using () will have the right effect
> $val = (TRUE AND FALSE);
> var_dump($val); // = int(0)
>
>
> ---------------------------------------------------------------------------
>
>
> Full Bug description available at: http://bugs.php.net/?id=8348
>
>
> 

-- 
/ adam maccabee trachtenberg | visit college life online \
\ adam <email protected>           | http://www.student.com    /

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