Nullsafe¶

A nullsafe operator is able to carry a function or fail graciously to null. In particular, it won’t stop the execution with a fatal error.

There are two PHP operators that are nullsafe :

nullsafe object operator ?->
nullsafe-coalesce ??.

<?php

$a = foo();

$b = $a?->method();

$b = $a?->chain1?->chain2?->method();

// foo may return null
function foo() : ?A { }

?>

Related : Object Operator ->, Coalesce Operator