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Posted by Brian V Bonini on 05/13/05 18:11
On Fri, 2005-05-13 at 06:34, Erwin Kerk wrote:
> Bogdan Stancescu wrote:
> > You probably mis-typed something:
> >
> > [bogdan@myserver ~]$ php
> > <?
> > if ("info" == 0) echo "is 0\n"; else echo "not 0\n";
> > ?>
> > Content-type: text/html
> > X-Powered-By: PHP/4.3.11
> >
> > is 0
> Tried that, but notice the PHP Version, it is failing in PHP 4.1.2!
>
> Erwin Kerk
Same behavior on 5.x - I suspect something to do with the 'type' and
loose comparison operators. According to table 2:
http://us4.php.net/manual/en/types.comparisons.php is should evaluate as
true. Looking at the ordinal values revealed nothing to me...
<?php
$string = "info";
$len = strlen($string);
$lst = $string{strlen($string - 1)};
echo '<pre>';
echo ($string == 0) ? "is 0\n" : "not 0\n";
echo (rtrim($string, $lst) == 0) ? "is 0\n" : "not 0\n";
echo "-----------------------\n";
for($i=0; $i<$len; $i++) {
$ord_value = ord($string[$i]);
echo chr($ord_value) . "=" . $ord_value . "\n";
}
echo '</pre>';
?>
Anyway, I suspect using ($string === 0) will give you the expected
results.
--
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