[php-src] Issue #18864: ErrorException from error handler static utility method

Issue: https://github.com/php/php-src/issues/18864 Author: uuf6429 ### Description - since PHP is slowly transitioning from errors to exceptions - since it's common for devs to want to handle errors and exception in a uniform way - (also judging by such utility code in the php documentation) It may be beneficial to implement a ErrorException::handleError() (or similar) static method, which can be fed directly to set_error_handler(). So essentially the [example here](https://www.php.net/manual/en/class.errorexception.php#errorexception.examples) would be built into the ErrorException class. ```php // internal code class ErrorException extends Exception { public static function handleError(int $errno, string $errstr, string $errfile, int $errline): void { if (!(error_reporting() & $errno)) { return; } if ($errno === E_DEPRECATED || $errno === E_USER_DEPRECATED) { return; } throw new \ErrorException($errstr, 0, $errno, $errfile, $errline); } } // userland code set_error_handler(ErrorException::handleError(...)); // or array call or whatever ``` Implementation-wise I don't think this would cause any BC issues, nor should it be invasive. Looking at [Symfony's error handler](https://github.com/symfony/error-handler/blob/35b55b166f6752d6aaf21aa042fc5ed280fce235/ErrorHandler.php#L388), there's a lot more going on in there, so this general approach probably won't cut it for Symfony. But there are otherwise many implementations that are similar to the example or simple/poorer: https://github.com/search?q=language%3APHP+set_error_handler+errorexception&type=code (essentially this is what I'd like to tackle mainly)