Question

I am trying to implement the logical connective AND, and was wondering if this shorthand notation is allowed:

$hasPermissions &= user_hasAppPermission($user_id, $permission);

Or do i have to do this:

$hasPermissions = $hasPermissions && user_hasAppPermission($user_id, $permission);

Answer 1

The shorthand &= is a bitwise assignment operation, which is not equivalent to your second statement. That would be the same as doing (note the single ampersand):

$hasPermissions = $hasPermissions & user_hasAppPermission($user_id, $permission);

From what I can see, your “long” statement seems fine as is.