Bug report

Since PHP 8 the $errcontext parameter is no longer passed to the callback registered with set_error_handler(). This is not detected by PHPStan.

Code snippet that reproduces the problem

• https://phpstan.org/r/17a4dab8-c0d1-4f1c-af1b-869420718490
• https://3v4l.org/MiqGP
• https://www.php.net/manual/en/function.set-error-handler.php

Expected output

The $errcontext parameter of the callback signature should be conditional depending on the PHP version.

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