Strange default parameters in callback signature for set_error_handler #5436
Description
Affected page
https://www.php.net/manual/en/function.set-error-handler.php
Issue description
In set_error_handler doc what is the point of having default parameters in the callback (for errfile, errline, errcontext) and also what does the question mark mean?
handler( int $errno, string $errstr, string $errfile = ?, int $errline = ?, array $errcontext = ? ): bool
Steps to reproduce
No response
Suggested fix
Remove default parameters