ID: 28845
User updated by: david dot rech at virusmedia dot de
Reported By: david dot rech at virusmedia dot de
Status: Open
Bug Type: *Directory/Filesystem functions
Operating System: Windows XP SP1
PHP Version: 4CVS-2004-06-19 (stable)
New Comment:
Sorry, missed the closing brace in second if-statement...
Must be:
"Whereas that code, with the first expression in braces, prints "1"
again.
if( (include_once(__FILE__)) && is_integer(1) ) echo 1;"
Previous Comments:
------------------------------------------------------------------------
[2004-06-19 20:02:25] david dot rech at virusmedia dot de
Description:
------------
I've notice some strange behaviour with include() and include_once()
calls in an if-statement whereas two expressions are TRUE and logically
combined with the '&&' operator.
While if( true && true ) echo 1; would print out "1" as expected, this
code however does not:
if( include_once(__FILE__) && is_integer(1) ) echo 1;
Whereas that code, with the first expression in braces, prints "1"
again.
if( (include_once(__FILE__) && is_integer(1) ) echo 1;
In the example you should notice that the expression is still TRUE with
other functions - even without braces around first expression.
Also, somehow the result of the second expression gets copied to the
first argument of the first expression as an integer.
Look at this warning:
Warning: main(1): failed to open stream: No such file or directory in
[...] on line 12
That's what happens if second expression is true and include_once()
was'nt put into braces. Try to negate the second expression - you will
get a '0' referred as the argument of include_once() in the warning.
So is this some strange magic, or did I've miss the point completely?
Reproduce code:
---------------
<?php
// Expected behaviour
if( true && true ) { // As expected - the expression is TRUE
echo "1st: That may have worked\n";
}
// Weird behaviour
if( class_exists('stdClass') && is_integer(1) ) { // Again - the
expression is TRUE
echo "2nd: You don't see that, don't you?\n";
}
if( @include_once(__FILE__) && is_integer(1) ) { // Expression seems to
be FALSE and causes a weird warning without the @
echo "3rd: So you see this..?";
}
if( (include_once(__FILE__)) && is_integer(1) ) { // TRUE
echo "4rd: In fact, you see this...";
}
?>
Expected result:
----------------
1st: That may have worked
2nd: You don't see that, don't you?
3rd: So you see this..?
4rd: In fact, you see this...
Actual result:
--------------
1st: That may have worked
2nd: You don't see that, don't you?
4rd: In fact, you see this...
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=28845&edit=1
