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Bug #8173 problem with "xor" and "not"
Submitted: 2000-12-08 12:02 UTC Modified: 2000-12-08 16:27 UTC
From: artymiak at safenet dot pl Assigned:
Status: Closed Package: Scripting Engine problem
PHP Version: 4.0.3pl1 OS: OpenBSD 2.7
Private report: No CVE-ID: None
View Developer Edit
 [2000-12-08 12:02 UTC] artymiak at safenet dot pl 
The following lines of code do not produce any output:
echo (0 xor 0);
echo (1 xor 1);
echo (!1);

while these lines of code return expected values:
echo (1 xor 0);
echo (0 xor 1);
echo (!0);

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 [2000-12-08 16:27 UTC] hholzgra@php.net 
the result of  xor in PHP4 is of type boolean (true or false), not integer
and 'echo true' produces a '1' as output while 'echo false' produces
the empy string

see alse
http://www.php.net/manual/language.operators.logical.php
 
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