Class Validator\Id is not compatible with PHP 7.1

[mannatera]

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Session Id validator uses hash_bits_per_character ini setting to validate the id. This setting is deprecated since PHP 7.1 (http://php.net/manual/en/session.configuration.php#ini.session.hash-bits-per-character). This causes the default validator to fail and starting sessions is not possible with default session config.

Code to reproduce the issue

$session = $sm->get(\Zend\Session\ManagerInterface::class);
$session->start();

Expected results

Should not throw Session validation failed RuntimeException

Actual results

Throws validation failed exception

[digitalStyx]

Hi, I also have a problem.

I use PHP 7.2.17.
My admin wants to change the session.sid_bits_per_character to 6 for security reasons. But unfortunately he can't do this because session_id will be not validate.