1.2.1391. Useless NullSafe Operator¶
Nullsafe operator
?->has no object when the types are never null, or when coalesce is active.
The nullsafe operator protects the execution from accessing a method or a property on a null value. If the object part of the syntax cannot be null, then the nullsafe operator ?-> will not protect it.
The nullsafe operator is filling the same duty as ?? operator, although with a more granular precision.
<?php
function foo() : A {
return new A(); // or other code
}
// foo() always returns A, so it is always valid
foo()?->methodOnA();
// goo() may return NULL: ?-> and ?? are filling the same duty
goo()?->methodOnA ?? C;
function goo() : ?A {}
?>
1.2.1391.1. Suggestions¶
Replace the null safe operator with the normal one.
Add the type null to the type declaration.
Check for null-coalesce operator ?? and choose the most appropriate.
1.2.1391.2. Specs¶
Short name |
Classes/UselessNullSafeOperator |
Rulesets |
|
Exakat since |
2.6.5 |
Severity |
Minor |
Time To Fix |
Quick (30 mins) |
Precision |
High |
Features |
nullsafe-operator |
Available in |