Is it possible to modify core class in PHP?

Asked Jan 25 '21 at 12:28

Active Jan 26 '21 at 23:53

Viewed 72 times

I have to work with low-quality legacy PHP code. Because of poor architecture and exception handling, often happens, that an error (core \Exception or \RuntimeException or \TypeError) is thrown and caught at some moment, but ignored and instead replaced with hardcoded result, which hides original error. Because of high code duplication, it is hard to check all catch-blocks. Also, I can not just refactor all catch-blocks because of codebase size and VCS policy.

Thus, to debug errors, I'd like to replace core \Exception::__construct (and \Error::__construct) for runtime session on my local machine, so that every time any exception is created, my custom code was called (f.e. trigger error and use my error_handler). I do not want to simply override them in child classes, but replace in original core classes (maybe with ReflectionAPI?).

Please note: this is not about common question "how to convert errors to exceptions", but exactly vice versa.

Is it possible for PHP7.1 and higher?

edited Jan 26 '21 at 23:53

asked Jan 25 '21 at 12:28

Oleksandr Boiko

1

You might want to try to [set a custom error handler](https://www.php.net/manual/en/function.set-error-handler.php) – M. Eriksson Jan 25 '21 at 12:31
1

When exception is created, thrown and catched, the error is not triggered, so I can not handle it – Oleksandr Boiko Jan 25 '21 at 12:33

Is it possible to modify core class in PHP?

0 Answers0