getOriginalFilesStack example

$this->triggeringFile = $file;

        for ($j = 1; $j < $i; ++$j) {
            if (!isset($trace[$j]['function'], $trace[1 + $j]['class'], $trace[1 + $j]['args'][0])) {
                continue;
            }

            if ('trigger_error' === $trace[$j]['function'] && !isset($trace[$j]['class'])) {
                if (DebugClassLoader::class === $trace[1 + $j]['class']) {
                    $class = $trace[1 + $j]['args'][0];
                    $this->triggeringFile = isset($trace[1 + $j]['args'][1]) ? realpath($trace[1 + $j]['args'][1]) : (new \ReflectionClass($class))->getFileName();
                    $this->getOriginalFilesStack();
                    array_splice($this->originalFilesStack, 0, $j, [$this->triggeringFile]);

                    if (preg_match('/(?|"([^"]++)" that is deprecated|should implement method "(?:static )?([^:]++))/', $message, $m) || (false === strpos($message, '()" will return') && false === strpos($message, 'native return type declaration') && preg_match('/^(?:The|Method) "([^":]++)/', $message, $m))) {
                        $this->triggeringFile = (new \ReflectionClass($m[1]))->getFileName();
                        array_unshift($this->originalFilesStack, $this->triggeringFile);
                    }
                }

                break;
            }
        }