ANDs Method not working

Anon

I have just migrated my site ontto a Linux Mandrake 8 INstallation from a win32 box and now the script that uses the ANDs method doesn't work. THe version of PHP is PHP/4.0.4pl1.

THe code is:

if ($portallevel & $pagelevel){
$themessage = "All okay";
} else {
header("Location: http://localhost/security/login_form.php?errortype=2&referer=$refer");
exit;
}

Yet it will always redirect even if portallevel and page level are both 4, 8 or 16. I have error checked and there is a value for the 2 it is checking.

Anybody aware of any issues?

Marcus

chowdary

Hi,
Use "&&"

Cheers
Ajay

kparker

&& (as Ajay recommends) is the logical AND operator. Each operand is first reduced to True or False, then the result is computed.

& is bitwise and: it simply performs a binary and on the original values. If these don't happen to both have 1 in at lease one bit position, the result is still zero.

E.g

1 && 2 == 1

whereas

1 & 2 == 0