original_string: public static function get_instance_info($instanceid) {
          global $DB;
  
          $params = self::validate_parameters(self::get_instance_info_parameters(), array('instanceid' => $instanceid));
          $warnings = array();
  
          // Retrieve guest enrolment plugin.
          $enrolplugin = enrol_get_plugin('guest');
          if (empty($enrolplugin)) {
              throw new moodle_exception('invaliddata', 'error');
          }
  
          self::validate_context(context_system::instance());
          $enrolinstance = $DB->get_record('enrol', array('id' => $params['instanceid']), '*', MUST_EXIST);
  
          $course = $DB->get_record('course', array('id' => $enrolinstance->courseid), '*', MUST_EXIST);
          if (!core_course_category::can_view_course_info($course) && !can_access_course($course)) {
              throw new moodle_exception('coursehidden');
          }
  
          $instanceinfo = $enrolplugin->get_enrol_info($enrolinstance);
          // Specific instance information.
          $instanceinfo->passwordrequired = $instanceinfo->requiredparam->passwordrequired;
  
          unset($instanceinfo->requiredparam);
  
          $result = array();
          $result['instanceinfo'] = $instanceinfo;
          $result['warnings'] = $warnings;
          return $result;
      }
code: public static function get_instance_info($instanceid) {
          global $DB;
  
          $params = self::validate_parameters(self::get_instance_info_parameters(), array('instanceid' => $instanceid));
          $warnings = array();
  
          // Retrieve guest enrolment plugin.
          $enrolplugin = enrol_get_plugin('guest');
          if (empty($enrolplugin)) {
              throw new moodle_exception('invaliddata', 'error');
          }
  
          self::validate_context(context_system::instance());
          $enrolinstance = $DB->get_record('enrol', array('id' => $params['instanceid']), '*', MUST_EXIST);
  
          $course = $DB->get_record('course', array('id' => $enrolinstance->courseid), '*', MUST_EXIST);
          if (!core_course_category::can_view_course_info($course) && !can_access_course($course)) {
              throw new moodle_exception('coursehidden');
          }
  
          $instanceinfo = $enrolplugin->get_enrol_info($enrolinstance);
          // Specific instance information.
          $instanceinfo->passwordrequired = $instanceinfo->requiredparam->passwordrequired;
  
          unset($instanceinfo->requiredparam);
  
          $result = array();
          $result['instanceinfo'] = $instanceinfo;
          $result['warnings'] = $warnings;
          return $result;
      }
code_tokens: public static function get_instance_info ( $ instanceid ) { global $ DB ; $ params = self :: validate_parameters ( self :: get_instance_info_parameters ( ) , array ( 'instanceid' => $ instanceid ) ) ; $ warnings = array ( ) ; // Retrieve guest enrolment plugin. $ enrolplugin = enrol_get_plugin ( 'guest' ) ; if ( empty ( $ enrolplugin ) ) { throw new moodle_exception ( 'invaliddata' , 'error' ) ; } self :: validate_context ( context_system :: instance ( ) ) ; $ enrolinstance = $ DB -> get_record ( 'enrol' , array ( 'id' => $ params [ 'instanceid' ] ) , '*' , MUST_EXIST ) ; $ course = $ DB -> get_record ( 'course' , array ( 'id' => $ enrolinstance -> courseid ) , '*' , MUST_EXIST ) ; if ( ! core_course_category :: can_view_course_info ( $ course ) && ! can_access_course ( $ course ) ) { throw new moodle_exception ( 'coursehidden' ) ; } $ instanceinfo = $ enrolplugin -> get_enrol_info ( $ enrolinstance ) ; // Specific instance information. $ instanceinfo -> passwordrequired = $ instanceinfo -> requiredparam -> passwordrequired ; unset ( $ instanceinfo -> requiredparam ) ; $ result = array ( ) ; $ result [ 'instanceinfo' ] = $ instanceinfo ; $ result [ 'warnings' ] = $ warnings ; return $ result ; }
docstring: Return guest enrolment instance information.
  
  @param int $instanceid instance id of guest enrolment plugin.
  @return array warnings and instance information.
  @since Moodle 3.1
docstring_tokens: Return guest enrolment instance information .