[RESOLVED] logical negation

[cretaceous]

I had this clunky statement:

  

  if ($currmemid && $currsector==1 && $edp &!$umsg  &!$regmsg )
 { then whatever

but it works inconsistently, sometimes evaluating as false when it should be true and sometimes working correctly

By changing to a double set of conditonals as this, it works 100%

if(!$umsg &!$regmsg){
  if ($currmemid && $currsector==1 && $edp ) { then whatever

I'm often tempted to write

if($umsg && $regmsg){ $donothing=0;} else { do what I actually want

• why is this and can anyone clarify this or offer some pointers ?
  thanks

[NogDog]

&! is not a PHP logical operator. It's probably being interpreted as a & bitwise "and" operator followed by the ! negation operator.

if ($currmemid && $currsector==1 && $edp && !$umsg  && !$regmsg )

[cretaceous]

oh. holy pig (bringer of flu)
cant think how many places I've used that