Php 8 null safe operator

$country = $session?->user?->getAddress()?->country;

Source: php.net

Null safe operator in php

The syntax is similar to the property/method access operator (->), and following the nullable type pattern, the null-safe operator is ?->.

$foo?->bar?->baz;
Null safe operator silently returns null if the expression to the left side evaluates to null.

Source: php.watch

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