I found an issue when using the Cassandra\Float class as a return type hint in PHP 8.0.9

Using the class name directly causes the following error:

PHP Fatal error:  Cannot use Cassandra\Float as Float because 'Float' is a special class name

Even when aliased, the compiler still throws an error, albeit a different one:

PHP Fatal error:  Cannot use 'Cassandra\Float' as class name as it is reserved

Example code

use Cassandra\Float as CassandraFloat;

class Test {

    public function getFloat(float $float): CassandraFloat
    {
        return new CassandraFloat($float);
    }

}

Removing the return type hint solves the problem, but shouldn't be required.

To be honest, this feels like it might be a PHP bug rather than an issue with the Cassandra extension, but it may be something that should be addressed here anyway; "float" is a reserved word and the class name may need to be changed to avoid issues in the future

As far as I can tell the only other "type" that might be an issue is Cassandra\Numeric, but that is only "soft" reserved