Null Safe Object Operator¶
The Null Safe Object Operator behaves like the object operator, until the object is null. Then, instead of failing with a fatal error, it returns null.
<?php
function foo() : ?A {}
class A {
public $property = 1;
}
// This will not fail, but also display nothing
echo foo()?->property;
// This will fail, when foo() returns null
echo foo()->property;
?>
See also This nullsafe operator could come in PHP 8, Mastering Null Safety in PHP 8: A Comprehensive Guide to Using the Null Safe Operator, An Introduction to PHP 8.0’s Null Safe Operator, Null safe operator in practice, Exploring the Null Safe Operator in PHP
Related : Object Operator ->, Scope Resolution Operator ::
Added in PHP 8.0+