isset / unset should silently fail

[cpriest]

Invalid calls to isset/unset will fail silently and return false in the case of isset(), no warning/notice should be thrown.

[cpriest]

Invalid calls to isset/unset will fail silently and return false in the case of isset(), no warning/notice should be thrown.

class TimePeriod {
    private $Seconds;

    protected $Seconds {
        get() { return $this->Seconds; /* Accesses the private $Seconds directly */ }
        set($x) { $this->Seconds = $x; /* Accesses the private $Seconds directly */ }
    }
}

$o = new TimePeriod();
isset($o->Seconds); /* Returns false, no error thrown */
unset($o->Seconds);  /* Does nothing, no error thrown */

[cpriest]

This has really already been written in, however it is not quite as the title indicates. I went back and read over the initial discussion of this topic on internals and no mention that unset should behave this way (silently). So the final situation is that isset() silently fails and returns false while unset emits a warning and has no effect, but execution continues.

[nikic]

@cpriest Sounds good to me. Could you update the RFC regarding that change?

[cpriest]

Already have.