array_diff_key

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Supported Versions: PHP 5 >= 5.1.0, PHP 7, PHP 8
Computes the difference of arrays using keys for comparison
array_diff_key(array $array, array ...$arrays): array
        $expectedCommonVariables = array_merge($expectedCommonVariables, $overriddenKeys);

        self::assertArraySubset($expectedCommonVariables, $response['$_SERVER']);



        $keysToRemove = array_keys(array_diff_key($expectedCommonVariables, $overriddenKeys));

        foreach ($keysToRemove as $keyToRemove) {

            unset($response['$_SERVER'][$keyToRemove]);

        }
tests/Handler/FpmHandlerTest.php