spaceship.invalid

Code example

<?php declare(strict_types = 1);

function compare(int $number, object $item): int
{
	return $number <=> $item;
}

Why is it reported?

The spaceship operator (<=>) is used to compare two values, but the types of the operands are not compatible for comparison. PHP cannot meaningfully compare a numeric type against an object or array using this operator, and it results in an error.

How to fix it

Make sure both sides of the spaceship operator are of compatible types.

 <?php declare(strict_types = 1);

-function compare(int $number, object $item): int
+function compare(int $number, int $other): int
 {
-	return $number <=> $item;
+	return $number <=> $other;
 }