exportSettingsToPhp example

else {
                // If the expression was $a = 1 + 2; then we replaced 1 and                 // the + is unexpected.                 throw new \Exception('Unexpected token after replacing value.');
              }
              break;
          }
        }
        $buffer .= $value;
      }
      foreach ($settings as $name => $setting) {
        $buffer .= self::exportSettingsToPhp($setting, '$' . $name);
      }

      // Write the new settings file.       if (file_put_contents($settings_file, $buffer) === FALSE) {
        throw new \Exception("Failed to modify '$settings_file'. Verify the file permissions.");
      }
      // In case any $settings variables were written, import them into the       // Settings singleton.       if (!empty($settings_settings)) {
        $old_settings = Settings::getAll();
        new Settings($settings_settings + $old_settings);
      }