weird php or laravel quirk with default array value in func

so i am doing something like:

PHP Code:

# file1.php
function() {  //more a controller
…..code
            return $this->respondFailedValidation(config(‘messages.error.invalid_details’), $validator->errors());
}
# file2.php
public function respondFailedValidation($message = “Validation error”, $errorList = null)
    {
        dd(func_get_args());
        //return $this->setStatusCode(‘400’)->respondWithError($message, $errorList);
    } 

dd() is a laravel […]

Original post by paulh1983