> You would expect the while loop to go on forever just looking
> at the above code.  However, what's happening is that when the
> empty string is getting returned due to $i being > 10, the while
> loop is resolving FALSE when $bob is set to the value of the
> empty string.
> Is there any way that I can force this not to happen?  That the
> while loop resolves as FALSE only when the function actually
> returns a (boolean) FALSE value?

I think this should do it.

  function test() {
   static $i = 0;

   $i++;
   $retval = ( $i <= 10 ) ? $i : '';

   return $retval;

 }
 while( ($bob = test()) !== false ) {
   echo $bob . 'ECHO<br>';

 }

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