Re: array coalesce operator concept

PHP already exhibits the skipping behaviour (it only emits a warning for the wrong type used in foreach, skips the loop, and then continues with remaining code).

Yes, a warning is not an error. If someone dont care about warnings from error prone code, set the error_reporting accordingly to hide the messages. With the following code you do not even get a warning about a undefined variable. foreach($foobar ?? [] as $value) {

    var_dump($value);

}