From 17e11dd9d50e6fb706141fca1f1fe1eb877d6d43 Mon Sep 17 00:00:00 2001
From: Tim Hunt <T.J.Hunt@open.ac.uk>
Date: Mon, 16 Jan 2023 16:59:50 +0000
Subject: [PATCH] MDL-76899 quiz: Bulk fix object -> stdClass in PHPdoc

---
 .../accessrule/delaybetweenattempts/rule.php  |  2 +-
 mod/quiz/accessrule/seb/rule.php              |  4 +-
 mod/quiz/classes/cache/overrides.php          |  2 +-
 mod/quiz/classes/local/access_rule_base.php   | 10 +-
 .../classes/local/reports/attempts_report.php | 20 ++--
 .../local/reports/attempts_report_options.php | 10 +-
 .../classes/local/reports/report_base.php     |  4 +-
 mod/quiz/classes/output/edit_renderer.php     |  2 +-
 mod/quiz/classes/output/renderer.php          |  8 +-
 mod/quiz/classes/output/view_page.php         |  2 +-
 mod/quiz/classes/quiz_settings.php            | 12 +--
 mod/quiz/deprecatedlib.php                    |  2 +-
 mod/quiz/lib.php                              | 73 +++++++-------
 mod/quiz/locallib.php                         | 98 +++++++++----------
 mod/quiz/report/grading/renderer.php          | 14 +--
 mod/quiz/report/grading/report.php            |  6 +-
 mod/quiz/report/overview/overview_table.php   |  6 +-
 mod/quiz/report/overview/report.php           | 26 ++---
 mod/quiz/report/overview/tests/helpers.php    | 10 +-
 mod/quiz/report/reportlib.php                 | 18 ++--
 .../first_or_all_responses_table.php          | 14 +--
 .../report/responses/last_responses_table.php |  4 +-
 .../report/statistics/classes/calculator.php  |  2 +-
 mod/quiz/report/statistics/report.php         | 16 +--
 .../statistics/statistics_question_table.php  | 10 +-
 .../report/statistics/statistics_table.php    |  4 +-
 .../statistics/tests/statistics_test.php      |  2 +-
 mod/quiz/tests/custom_completion_test.php     |  6 +-
 28 files changed, 194 insertions(+), 193 deletions(-)

diff --git a/mod/quiz/accessrule/delaybetweenattempts/rule.php b/mod/quiz/accessrule/delaybetweenattempts/rule.php
index f2cf9d1f1fe..bc58d3b74bc 100644
--- a/mod/quiz/accessrule/delaybetweenattempts/rule.php
+++ b/mod/quiz/accessrule/delaybetweenattempts/rule.php
@@ -59,7 +59,7 @@ class quizaccess_delaybetweenattempts extends access_rule_base {
      * Compute the next time a student would be allowed to start an attempt,
      * according to this rule.
      * @param int $numprevattempts number of previous attempts.
-     * @param object $lastattempt information about the previous attempt.
+     * @param stdClass $lastattempt information about the previous attempt.
      * @return number the time.
      */
     protected function compute_next_start_time($numprevattempts, $lastattempt) {
diff --git a/mod/quiz/accessrule/seb/rule.php b/mod/quiz/accessrule/seb/rule.php
index 3c4e02aa7f0..2076988b4a0 100644
--- a/mod/quiz/accessrule/seb/rule.php
+++ b/mod/quiz/accessrule/seb/rule.php
@@ -151,7 +151,7 @@ class quizaccess_seb extends access_rule_base {
      * Save any submitted settings when the quiz settings form is submitted. This
      * is called from {@link quiz_after_add_or_update()} in lib.php.
      *
-     * @param object $quiz the data from the quiz form, including $quiz->id
+     * @param stdClass $quiz the data from the quiz form, including $quiz->id
      *      which is the id of the quiz being saved.
      */
     public static function save_settings($quiz) {
@@ -204,7 +204,7 @@ class quizaccess_seb extends access_rule_base {
      * Delete any rule-specific settings when the quiz is deleted. This is called
      * from {@link quiz_delete_instance()} in lib.php.
      *
-     * @param object $quiz the data from the database, including $quiz->id
+     * @param stdClass $quiz the data from the database, including $quiz->id
      *      which is the id of the quiz being deleted.
      */
     public static function delete_settings($quiz) {
diff --git a/mod/quiz/classes/cache/overrides.php b/mod/quiz/classes/cache/overrides.php
index 839b3b29554..5a69313978b 100644
--- a/mod/quiz/classes/cache/overrides.php
+++ b/mod/quiz/classes/cache/overrides.php
@@ -45,7 +45,7 @@ class overrides implements \cache_data_source {
      * specified by this interface.
      *
      * @param cache_definition $definition
-     * @return object
+     * @return stdClass
      */
     public static function get_instance_for_cache(cache_definition $definition): overrides {
         if (is_null(self::$instance)) {
diff --git a/mod/quiz/classes/local/access_rule_base.php b/mod/quiz/classes/local/access_rule_base.php
index 9ab7b85c92b..085a806b339 100644
--- a/mod/quiz/classes/local/access_rule_base.php
+++ b/mod/quiz/classes/local/access_rule_base.php
@@ -82,7 +82,7 @@ abstract class access_rule_base {
      * Whether a user should be allowed to start a new attempt at this quiz now.
      *
      * @param int $numprevattempts the number of previous attempts this user has made.
-     * @param object $lastattempt information about the user's last completed attempt.
+     * @param stdClass $lastattempt information about the user's last completed attempt.
      * @return string false if access should be allowed, a message explaining the
      *      reason if access should be prevented.
      */
@@ -185,7 +185,7 @@ abstract class access_rule_base {
      * active attempt for this user.
      *
      * @param int $numprevattempts the number of previous attempts this user has made.
-     * @param object $lastattempt information about the user's last completed attempt.
+     * @param stdClass $lastattempt information about the user's last completed attempt.
      * @return bool true if this rule means that this user will never be allowed another
      * attempt at this quiz.
      */
@@ -206,7 +206,7 @@ abstract class access_rule_base {
     /**
      * If the user should be shown a different amount of time than $timenow - $this->end_time(), then
      * override this method.  This is useful if the time remaining is large enough to be omitted.
-     * @param object $attempt the current attempt
+     * @param stdClass $attempt the current attempt
      * @param int $timenow the time now. We don't use $this->timenow, so we can
      * give the user a more accurate indication of how much time is left.
      * @return mixed the time left in seconds (can be negative) or false if there is no limit.
@@ -301,7 +301,7 @@ abstract class access_rule_base {
     /**
      * Save any submitted settings when the quiz settings form is submitted. This
      * is called from {@see quiz_after_add_or_update()} in lib.php.
-     * @param object $quiz the data from the quiz form, including $quiz->id
+     * @param stdClass $quiz the data from the quiz form, including $quiz->id
      *      which is the id of the quiz being saved.
      */
     public static function save_settings($quiz) {
@@ -311,7 +311,7 @@ abstract class access_rule_base {
     /**
      * Delete any rule-specific settings when the quiz is deleted. This is called
      * from {@see quiz_delete_instance()} in lib.php.
-     * @param object $quiz the data from the database, including $quiz->id
+     * @param stdClass $quiz the data from the database, including $quiz->id
      *      which is the id of the quiz being deleted.
      * @since Moodle 2.7.1, 2.6.4, 2.5.7
      */
diff --git a/mod/quiz/classes/local/reports/attempts_report.php b/mod/quiz/classes/local/reports/attempts_report.php
index 9f246fd21b4..ce1f1519ca9 100644
--- a/mod/quiz/classes/local/reports/attempts_report.php
+++ b/mod/quiz/classes/local/reports/attempts_report.php
@@ -68,9 +68,9 @@ abstract class attempts_report extends report_base {
      *
      * @param string $mode
      * @param string $formclass
-     * @param object $quiz
-     * @param object $cm
-     * @param object $course
+     * @param stdClass $quiz
+     * @param stdClass $cm
+     * @param stdClass $course
      * @return array with four elements:
      *      0 => integer the current group id (0 for none).
      *      1 => \core\dml\sql_join Contains joins, wheres, params for all the students in this course.
@@ -107,8 +107,8 @@ abstract class attempts_report extends report_base {
      * Get sql fragments (joins) which can be used to build queries that
      * will select an appropriate set of students to show in the reports.
      *
-     * @param object $cm the course module.
-     * @param object $course the course settings.
+     * @param stdClass $cm the course module.
+     * @param stdClass $course the course settings.
      * @return array with four elements:
      *      0 => integer the current group id (0 for none).
      *      1 => \core\dml\sql_join Contains joins, wheres, params for all the students in this course.
@@ -257,7 +257,7 @@ abstract class attempts_report extends report_base {
     /**
      * Add all the grade and feedback columns, if applicable, to the $columns
      * and $headers arrays.
-     * @param object $quiz the quiz settings.
+     * @param stdClass $quiz the quiz settings.
      * @param bool $usercanseegrades whether the user is allowed to see grades for this quiz.
      * @param array $columns the list of columns. Added to.
      * @param array $headers the columns headings. Added to.
@@ -305,8 +305,8 @@ abstract class attempts_report extends report_base {
 
     /**
      * Process any submitted actions.
-     * @param object $quiz the quiz settings.
-     * @param object $cm the cm object for the quiz.
+     * @param stdClass $quiz the quiz settings.
+     * @param stdClass $cm the cm object for the quiz.
      * @param int $currentgroup the currently selected group.
      * @param \core\dml\sql_join $groupstudentsjoins (joins, wheres, params) the students in the current group.
      * @param \core\dml\sql_join $allowedjoins (joins, wheres, params) the users whose attempt this user is allowed to modify.
@@ -327,9 +327,9 @@ abstract class attempts_report extends report_base {
 
     /**
      * Delete the quiz attempts
-     * @param object $quiz the quiz settings. Attempts that don't belong to
+     * @param stdClass $quiz the quiz settings. Attempts that don't belong to
      * this quiz are not deleted.
-     * @param object $cm the course_module object.
+     * @param stdClass $cm the course_module object.
      * @param array $attemptids the list of attempt ids to delete.
      * @param \core\dml\sql_join $allowedjoins (joins, wheres, params) This list of userids that are visible in the report.
      *      Users can only delete attempts that they are allowed to see in the report.
diff --git a/mod/quiz/classes/local/reports/attempts_report_options.php b/mod/quiz/classes/local/reports/attempts_report_options.php
index 5d8f92383d5..8f55cbdcb32 100644
--- a/mod/quiz/classes/local/reports/attempts_report_options.php
+++ b/mod/quiz/classes/local/reports/attempts_report_options.php
@@ -90,9 +90,9 @@ class attempts_report_options {
      * Constructor.
      *
      * @param string $mode which report these options are for.
-     * @param object $quiz the settings for the quiz being reported on.
-     * @param object $cm the course module objects for the quiz being reported on.
-     * @param object $course the course settings for the coures this quiz is in.
+     * @param stdClass $quiz the settings for the quiz being reported on.
+     * @param stdClass $cm the course module objects for the quiz being reported on.
+     * @param stdClass $course the course settings for the coures this quiz is in.
      */
     public function __construct($mode, $quiz, $cm, $course) {
         $this->mode   = $mode;
@@ -137,7 +137,7 @@ class attempts_report_options {
      * Process the data we get when the settings form is submitted. This includes
      * updating the fields of this class, and updating the user preferences
      * where appropriate.
-     * @param object $fromform The data from $mform->get_data() from the settings form.
+     * @param stdClass $fromform The data from $mform->get_data() from the settings form.
      */
     public function process_settings_from_form($fromform) {
         $this->setup_from_form_data($fromform);
@@ -175,7 +175,7 @@ class attempts_report_options {
 
     /**
      * Set the fields of this object from the form data.
-     * @param object $fromform The data from $mform->get_data() from the settings form.
+     * @param stdClass $fromform The data from $mform->get_data() from the settings form.
      */
     public function setup_from_form_data($fromform) {
         $this->attempts   = $fromform->attempts;
diff --git a/mod/quiz/classes/local/reports/report_base.php b/mod/quiz/classes/local/reports/report_base.php
index a6bcffe8cbe..edfac16b31a 100644
--- a/mod/quiz/classes/local/reports/report_base.php
+++ b/mod/quiz/classes/local/reports/report_base.php
@@ -77,8 +77,8 @@ abstract class report_base {
     /**
      * Get the current group for the user user looking at the report.
      *
-     * @param object $cm the course_module information.
-     * @param object $course the course settings.
+     * @param stdClass $cm the course_module information.
+     * @param stdClass $course the course settings.
      * @param context $context the quiz context.
      * @return int the current group id, if applicable. 0 for all users,
      *      NO_GROUPS_ALLOWED if the user cannot see any group.
diff --git a/mod/quiz/classes/output/edit_renderer.php b/mod/quiz/classes/output/edit_renderer.php
index 25ae62954af..c667b588d79 100644
--- a/mod/quiz/classes/output/edit_renderer.php
+++ b/mod/quiz/classes/output/edit_renderer.php
@@ -485,7 +485,7 @@ class edit_renderer extends \plugin_renderer_base {
     /**
      * Render an icon to remove a section from the quiz.
      *
-     * @param object $section the section to be removed.
+     * @param stdClass $section the section to be removed.
      * @return string HTML to output.
      */
     public function section_remove_icon($section) {
diff --git a/mod/quiz/classes/output/renderer.php b/mod/quiz/classes/output/renderer.php
index d5a06c8187d..4c452ba6699 100644
--- a/mod/quiz/classes/output/renderer.php
+++ b/mod/quiz/classes/output/renderer.php
@@ -1026,8 +1026,8 @@ class renderer extends plugin_renderer_base {
     /**
      * Output the page information
      *
-     * @param object $quiz the quiz settings.
-     * @param object $cm the course_module object.
+     * @param stdClass $quiz the quiz settings.
+     * @param stdClass $cm the course_module object.
      * @param context $context the quiz context.
      * @param array $messages any access messages that should be described.
      * @param bool $quizhasquestions does quiz has questions added.
@@ -1062,8 +1062,8 @@ class renderer extends plugin_renderer_base {
     /**
      * Output the quiz intro.
      *
-     * @param object $quiz the quiz settings.
-     * @param object $cm the course_module object.
+     * @param stdClass $quiz the quiz settings.
+     * @param stdClass $cm the course_module object.
      * @return string HTML to output.
      */
     public function quiz_intro($quiz, $cm) {
diff --git a/mod/quiz/classes/output/view_page.php b/mod/quiz/classes/output/view_page.php
index ec437bfafa7..bc967837efa 100644
--- a/mod/quiz/classes/output/view_page.php
+++ b/mod/quiz/classes/output/view_page.php
@@ -72,7 +72,7 @@ class view_page {
     public $gradebookfeedback;
     /** @var bool $unfinished contains 1 if an attempt is unfinished. */
     public $unfinished;
-    /** @var object $lastfinishedattempt the last attempt from the attempts array. */
+    /** @var stdClass $lastfinishedattempt the last attempt from the attempts array. */
     public $lastfinishedattempt;
     /** @var array $preventmessages of messages telling the user why they can't
      *       attempt the quiz now. */
diff --git a/mod/quiz/classes/quiz_settings.php b/mod/quiz/classes/quiz_settings.php
index de053228c96..146fc82d555 100644
--- a/mod/quiz/classes/quiz_settings.php
+++ b/mod/quiz/classes/quiz_settings.php
@@ -68,9 +68,9 @@ class quiz_settings {
     /**
      * Constructor, assuming we already have the necessary data loaded.
      *
-     * @param object $quiz the row from the quiz table.
-     * @param object $cm the course_module object for this quiz.
-     * @param object $course the row from the course table for the course we belong to.
+     * @param stdClass $quiz the row from the quiz table.
+     * @param stdClass $cm the course_module object for this quiz.
+     * @param stdClass $course the row from the course table for the course we belong to.
      * @param bool $getcontext intended for testing - stops the constructor getting the context.
      */
     public function __construct($quiz, $cm, $course, $getcontext = true) {
@@ -108,7 +108,7 @@ class quiz_settings {
     /**
      * Create a {@see quiz_attempt} for an attempt at this quiz.
      *
-     * @param object $attemptdata row from the quiz_attempts table.
+     * @param stdClass $attemptdata row from the quiz_attempts table.
      * @return quiz_attempt the new quiz_attempt object.
      */
     public function create_attempt_object($attemptdata) {
@@ -176,7 +176,7 @@ class quiz_settings {
     /**
      * Get the course settings object that this quiz belongs to.
      *
-     * @return object the row of the course table.
+     * @return stdClass the row of the course table.
      */
     public function get_course() {
         return $this->course;
@@ -239,7 +239,7 @@ class quiz_settings {
     /**
      * Get the course-module object for this quiz.
      *
-     * @return object the course_module object.
+     * @return stdClass the course_module object.
      */
     public function get_cm() {
         return $this->cm;
diff --git a/mod/quiz/deprecatedlib.php b/mod/quiz/deprecatedlib.php
index d23e90960c2..ed600e15361 100644
--- a/mod/quiz/deprecatedlib.php
+++ b/mod/quiz/deprecatedlib.php
@@ -219,7 +219,7 @@ function quiz_retrieve_tags_for_slot_ids($slotids) {
  *
  * @deprecated in 4.1 use mod_quiz\structure::has_use_capability(...) instead.
  *
- * @param object $quiz the quiz settings.
+ * @param stdClass $quiz the quiz settings.
  * @param int $slot which question in the quiz to test.
  * @return bool whether the user can use this question.
  */
diff --git a/mod/quiz/lib.php b/mod/quiz/lib.php
index 0b37852ad04..f13b801f05e 100644
--- a/mod/quiz/lib.php
+++ b/mod/quiz/lib.php
@@ -86,7 +86,7 @@ require_once(__DIR__ . '/deprecatedlib.php');
  * will create a new instance and return the id number
  * of the new instance.
  *
- * @param object $quiz the data that came from the form.
+ * @param stdClass $quiz the data that came from the form.
  * @return mixed the id of the new instance on success,
  *          false or a string error message on failure.
  */
@@ -119,7 +119,7 @@ function quiz_add_instance($quiz) {
  * (defined by the form in mod_form.php) this function
  * will update an existing instance with new data.
  *
- * @param object $quiz the data that came from the form.
+ * @param stdClass $quiz the data that came from the form.
  * @return mixed true on success, false or a string error message on failure.
  */
 function quiz_update_instance($quiz, $mform) {
@@ -211,7 +211,7 @@ function quiz_delete_instance($id) {
 /**
  * Deletes a quiz override from the database and clears any corresponding calendar events
  *
- * @param object $quiz The quiz object.
+ * @param stdClass $quiz The quiz object.
  * @param int $overrideid The id of the override being deleted
  * @param bool $log Whether to trigger logs.
  * @return bool true on success
@@ -276,7 +276,7 @@ function quiz_delete_override($quiz, $overrideid, $log = true) {
 /**
  * Deletes all quiz overrides from the database and clears any corresponding calendar events
  *
- * @param object $quiz The quiz object.
+ * @param stdClass $quiz The quiz object.
  * @param bool $log Whether to trigger logs.
  */
 function quiz_delete_all_overrides($quiz, $log = true) {
@@ -299,9 +299,9 @@ function quiz_delete_all_overrides($quiz, $log = true) {
  *   quiz->extrapasswords will contain an array of strings giving the remaining
  *   passwords.
  *
- * @param object $quiz The quiz object.
+ * @param stdClass $quiz The quiz object.
  * @param int $userid The userid.
- * @return object $quiz The updated quiz object.
+ * @return stdClass $quiz The updated quiz object.
  */
 function quiz_update_effective_access($quiz, $userid) {
     global $DB;
@@ -401,7 +401,7 @@ function quiz_update_effective_access($quiz, $userid) {
 /**
  * Delete all the attempts belonging to a quiz.
  *
- * @param object $quiz The quiz object.
+ * @param stdClass $quiz The quiz object.
  */
 function quiz_delete_all_attempts($quiz) {
     global $CFG, $DB;
@@ -414,8 +414,8 @@ function quiz_delete_all_attempts($quiz) {
 /**
  * Delete all the attempts belonging to a user in a particular quiz.
  *
- * @param object $quiz The quiz object.
- * @param object $user The user object.
+ * @param stdClass $quiz The quiz object.
+ * @param stdClass $user The user object.
  */
 function quiz_delete_user_attempts($quiz, $user) {
     global $CFG, $DB;
@@ -433,7 +433,7 @@ function quiz_delete_user_attempts($quiz, $user) {
 /**
  * Get the best current grade for a particular user in a quiz.
  *
- * @param object $quiz the quiz settings.
+ * @param stdClass $quiz the quiz settings.
  * @param int $userid the id of the user.
  * @return float the user's current grade for this quiz, or null if this user does
  * not have a grade on this quiz.
@@ -456,7 +456,7 @@ function quiz_get_best_grade($quiz, $userid) {
  * $quiz->grade and $quiz->sumgrades are non-zero (for example, if you want to
  * divide by them).
  *
- * @param object $quiz a row from the quiz table.
+ * @param stdClass $quiz a row from the quiz table.
  * @return bool whether this is a graded quiz.
  */
 function quiz_has_grades($quiz) {
@@ -480,11 +480,11 @@ function quiz_allows_multiple_tries($quiz) {
  * $return->time = the time they did it
  * $return->info = a short text description
  *
- * @param object $course
- * @param object $user
- * @param object $mod
- * @param object $quiz
- * @return object|null
+ * @param stdClass $course
+ * @param stdClass $user
+ * @param stdClass $mod
+ * @param stdClass $quiz
+ * @return stdClass|null
  */
 function quiz_user_outline($course, $user, $mod, $quiz) {
     global $DB, $CFG;
@@ -515,10 +515,10 @@ function quiz_user_outline($course, $user, $mod, $quiz) {
  * Print a detailed representation of what a  user has done with
  * a given particular instance of this module, for user activity reports.
  *
- * @param object $course
- * @param object $user
- * @param object $mod
- * @param object $quiz
+ * @param stdClass $course
+ * @param stdClass $user
+ * @param stdClass $mod
+ * @param stdClass $quiz
  * @return bool
  */
 function quiz_user_complete($course, $user, $mod, $quiz) {
@@ -671,7 +671,8 @@ function quiz_format_grade($quiz, $grade) {
 /**
  * Determine the correct number of decimal places required to format a grade.
  *
- * @param object $quiz The quiz table row, only $quiz->decimalpoints is used.
+ * @param stdClass $quiz The quiz table row, only $quiz->decimalpoints and
+ *      ->questiondecimalpoints are used.
  * @return integer
  */
 function quiz_get_grade_format($quiz) {
@@ -701,7 +702,7 @@ function quiz_format_question_grade($quiz, $grade) {
  * Update grades in central gradebook
  *
  * @category grade
- * @param object $quiz the quiz settings.
+ * @param stdClass $quiz the quiz settings.
  * @param int $userid specific user only, 0 means all users.
  * @param bool $nullifnone If a single user is specified and $nullifnone is true a grade item with a null rawgrade will be inserted
  */
@@ -730,7 +731,7 @@ function quiz_update_grades($quiz, $userid = 0, $nullifnone = true) {
  * Create or update the grade item for given quiz
  *
  * @category grade
- * @param object $quiz object with extra cmidnumber
+ * @param stdClass $quiz object with extra cmidnumber
  * @param mixed $grades optional array/object of grade(s); 'reset' means reset grades in gradebook
  * @return int 0 if ok, error code otherwise
  */
@@ -834,8 +835,8 @@ function quiz_grade_item_update($quiz, $grades = null) {
  * Delete grade item for given quiz
  *
  * @category grade
- * @param object $quiz object
- * @return object quiz
+ * @param stdClass $quiz object
+ * @return int
  */
 function quiz_grade_item_delete($quiz) {
     global $CFG;
@@ -1031,7 +1032,7 @@ function quiz_print_recent_mod_activity($activity, $courseid, $detail, $modnames
  * Pre-process the quiz options form data, making any necessary adjustments.
  * Called by add/update instance in this file.
  *
- * @param object $quiz The variables set on the form.
+ * @param stdClass $quiz The variables set on the form.
  */
 function quiz_process_options($quiz) {
     global $CFG;
@@ -1137,7 +1138,7 @@ function quiz_process_options($quiz) {
 
 /**
  * Helper function for {@link quiz_process_options()}.
- * @param object $fromform the sumbitted form date.
+ * @param stdClass $fromform the sumbitted form date.
  * @param string $field one of the review option field names.
  */
 function quiz_review_option_form_to_db($fromform, $field) {
@@ -1204,7 +1205,7 @@ function mod_quiz_inplace_editable(string $itemtype, int $itemid, string $newval
  * This function is called at the end of quiz_add_instance
  * and quiz_update_instance, to do the common processing.
  *
- * @param object $quiz the quiz object.
+ * @param stdClass $quiz the quiz object.
  */
 function quiz_after_add_or_update($quiz) {
     global $DB;
@@ -1251,8 +1252,8 @@ function quiz_after_add_or_update($quiz) {
  * associated with the specified override.
  *
  * @uses QUIZ_MAX_EVENT_LENGTH
- * @param object $quiz the quiz object.
- * @param object optional $override limit to a specific override
+ * @param stdClass $quiz the quiz object.
+ * @param stdClass optional $override limit to a specific override
  */
 function quiz_update_events($quiz, $override = null) {
     global $DB;
@@ -1549,7 +1550,7 @@ function quiz_reset_gradebook($courseid, $type='') {
  *
  * Also, move the quiz open and close dates, if the course start date is changing.
  *
- * @param object $data the data submitted from the reset course.
+ * @param stdClass $data the data submitted from the reset course.
  * @return array status array
  */
 function quiz_reset_userdata($data) {
@@ -1643,8 +1644,8 @@ function quiz_reset_userdata($data) {
  * Return a textual summary of the number of attempts that have been made at a particular quiz,
  * returns '' if no attempts have been made yet, unless $returnzero is passed as true.
  *
- * @param object $quiz the quiz object. Only $quiz->id is used at the moment.
- * @param object $cm the cm object. Only $cm->course, $cm->groupmode and
+ * @param stdClass $quiz the quiz object. Only $quiz->id is used at the moment.
+ * @param stdClass $cm the cm object. Only $cm->course, $cm->groupmode and
  *      $cm->groupingid fields are used at the moment.
  * @param bool $returnzero if false (default), when no attempts have been
  *      made '' is returned instead of 'Attempts: 0'.
@@ -1686,10 +1687,10 @@ function quiz_num_attempt_summary($quiz, $cm, $returnzero = false, $currentgroup
  * Returns the same as {@link quiz_num_attempt_summary()} but wrapped in a link
  * to the quiz reports.
  *
- * @param object $quiz the quiz object. Only $quiz->id is used at the moment.
- * @param object $cm the cm object. Only $cm->course, $cm->groupmode and
+ * @param stdClass $quiz the quiz object. Only $quiz->id is used at the moment.
+ * @param stdClass $cm the cm object. Only $cm->course, $cm->groupmode and
  *      $cm->groupingid fields are used at the moment.
- * @param object $context the quiz context.
+ * @param stdClass $context the quiz context.
  * @param bool $returnzero if false (default), when no attempts have been made
  *      '' is returned instead of 'Attempts: 0'.
  * @param int $currentgroup if there is a concept of current group where this method is being called
diff --git a/mod/quiz/locallib.php b/mod/quiz/locallib.php
index cdfa2bfd23c..5ecb108721e 100644
--- a/mod/quiz/locallib.php
+++ b/mod/quiz/locallib.php
@@ -79,7 +79,7 @@ define('QUIZ_SHOWIMAGE_LARGE', 2);
  * user starting at the current time. The ->id field is not set. The object is
  * NOT written to the database.
  *
- * @param object $quizobj the quiz object to create an attempt for.
+ * @param stdClass $quizobj the quiz object to create an attempt for.
  * @param int $attemptnumber the sequence number for the attempt.
  * @param stdClass|false $lastattempt the previous attempt by this user, if any. Only needed
  *         if $attemptnumber > 1 and $quiz->attemptonlast is true.
@@ -87,7 +87,7 @@ define('QUIZ_SHOWIMAGE_LARGE', 2);
  * @param bool $ispreview whether this new attempt is a preview.
  * @param int $userid  the id of the user attempting this quiz.
  *
- * @return object the newly created attempt object.
+ * @return stdClass the newly created attempt object.
  */
 function quiz_create_attempt(quiz_settings $quizobj, $attemptnumber, $lastattempt, $timenow, $ispreview = false, $userid = null) {
     global $USER;
@@ -147,7 +147,7 @@ function quiz_create_attempt(quiz_settings $quizobj, $attemptnumber, $lastattemp
  *
  * @param quiz_settings $quizobj        the quiz object to start an attempt for.
  * @param question_usage_by_activity $quba
- * @param object    $attempt
+ * @param stdClass    $attempt
  * @param integer   $attemptnumber      starting from 1
  * @param integer   $timenow            the attempt start time
  * @param array     $questionids        slot number => question id. Used for random questions, to force the choice
@@ -155,7 +155,7 @@ function quiz_create_attempt(quiz_settings $quizobj, $attemptnumber, $lastattemp
  * @param array     $forcedvariantsbyslot slot number => variant. Used for questions with variants,
  *                                        to force the choice of a particular variant. Intended for testing
  *                                        purposes only.
- * @return object   modified attempt object
+ * @return stdClass   modified attempt object
  */
 function quiz_start_new_attempt($quizobj, $quba, $attempt, $attemptnumber, $timenow,
                                 $questionids = array(), $forcedvariantsbyslot = array()) {
@@ -306,9 +306,9 @@ function quiz_start_new_attempt($quizobj, $quba, $attempt, $attemptnumber, $time
  * Start a subsequent new attempt, in each attempt builds on last mode.
  *
  * @param question_usage_by_activity    $quba         this question usage
- * @param object                        $attempt      this attempt
- * @param object                        $lastattempt  last attempt
- * @return object                       modified attempt object
+ * @param stdClass                        $attempt      this attempt
+ * @param stdClass                        $lastattempt  last attempt
+ * @return stdClass                       modified attempt object
  *
  */
 function quiz_start_attempt_built_on_last($quba, $attempt, $lastattempt) {
@@ -341,8 +341,8 @@ function quiz_start_attempt_built_on_last($quba, $attempt, $lastattempt) {
  *
  * @param quiz_settings $quizobj
  * @param question_usage_by_activity $quba
- * @param object                     $attempt
- * @return object                    attempt object with uniqueid and id set.
+ * @param stdClass                     $attempt
+ * @return stdClass                    attempt object with uniqueid and id set.
  */
 function quiz_attempt_save_started($quizobj, $quba, $attempt) {
     global $DB;
@@ -399,7 +399,7 @@ function quiz_get_user_attempt_unfinished($quizid, $userid) {
  * Delete a quiz attempt.
  * @param mixed $attempt an integer attempt id or an attempt object
  *      (row of the quiz_attempts table).
- * @param object $quiz the quiz object.
+ * @param stdClass $quiz the quiz object.
  */
 function quiz_delete_attempt($attempt, $quiz) {
     global $DB;
@@ -454,7 +454,7 @@ function quiz_delete_attempt($attempt, $quiz) {
 /**
  * Delete all the preview attempts at a quiz, or possibly all the attempts belonging
  * to one user.
- * @param object $quiz the quiz object.
+ * @param stdClass $quiz the quiz object.
  * @param int $userid (optional) if given, only delete the previews belonging to this user.
  */
 function quiz_delete_previews($quiz, $userid = null) {
@@ -536,7 +536,7 @@ function quiz_repaginate_questions($quizid, $slotsperpage) {
  * grade for this quiz.
  *
  * @param float $rawgrade the unadjusted grade, fof example $attempt->sumgrades
- * @param object $quiz the quiz object. Only the fields grade, sumgrades and decimalpoints are used.
+ * @param stdClass $quiz the quiz object. Only the fields grade, sumgrades and decimalpoints are used.
  * @param bool|string $format whether to format the results for display
  *      or 'question' to format a question grade (different number of decimal places.
  * @return float|string the rescaled grade, or null/the lang string 'notyetgraded'
@@ -562,7 +562,7 @@ function quiz_rescale_grade($rawgrade, $quiz, $format = true) {
  * Get the feedback object for this grade on this quiz.
  *
  * @param float $grade a grade on this quiz.
- * @param object $quiz the quiz settings.
+ * @param stdClass $quiz the quiz settings.
  * @return false|stdClass the record object or false if there is not feedback for the given grade
  * @since  Moodle 3.1
  */
@@ -611,7 +611,7 @@ function quiz_feedback_for_grade($grade, $quiz, $context) {
 }
 
 /**
- * @param object $quiz the quiz database row.
+ * @param stdClass $quiz the quiz database row.
  * @return bool Whether this quiz has any non-blank feedback text.
  */
 function quiz_has_feedback($quiz) {
@@ -633,7 +633,7 @@ function quiz_has_feedback($quiz) {
  *
  * You should call {@link quiz_delete_previews()} before you call this function.
  *
- * @param object $quiz a quiz.
+ * @param stdClass $quiz a quiz.
  */
 function quiz_update_sumgrades($quiz) {
     global $DB;
@@ -659,7 +659,7 @@ function quiz_update_sumgrades($quiz) {
 /**
  * Update the sumgrades field of the attempts at a quiz.
  *
- * @param object $quiz a quiz.
+ * @param stdClass $quiz a quiz.
  */
 function quiz_update_all_attempt_sumgrades($quiz) {
     global $DB;
@@ -685,7 +685,7 @@ function quiz_update_all_attempt_sumgrades($quiz) {
  * quiz_update_grades.
  *
  * @param float $newgrade the new maximum grade for the quiz.
- * @param object $quiz the quiz we are updating. Passed by reference so its
+ * @param stdClass $quiz the quiz we are updating. Passed by reference so its
  *      grade field can be updated too.
  * @return bool indicating success or failure.
  */
@@ -755,7 +755,7 @@ function quiz_set_grade($newgrade, $quiz) {
 /**
  * Save the overall grade for a user at a quiz in the quiz_grades table
  *
- * @param object $quiz The quiz for which the best grade is to be calculated and then saved.
+ * @param stdClass $quiz The quiz for which the best grade is to be calculated and then saved.
  * @param int $userid The userid to calculate the grade for. Defaults to the current user.
  * @param array $attempts The attempts of this user. Useful if you are
  * looping through many users. Attempts can be fetched in one master query to
@@ -803,7 +803,7 @@ function quiz_save_best_grade($quiz, $userid = null, $attempts = array()) {
 /**
  * Calculate the overall grade for a quiz given a number of attempts by a particular user.
  *
- * @param object $quiz    the quiz settings object.
+ * @param stdClass $quiz    the quiz settings object.
  * @param array $attempts an array of all the user's attempts at this quiz in order.
  * @return float          the overall grade
  */
@@ -851,7 +851,7 @@ function quiz_calculate_best_grade($quiz, $attempts) {
  * This function is equivalent to calling quiz_save_best_grade for all
  * users, but much more efficient.
  *
- * @param object $quiz the quiz settings.
+ * @param stdClass $quiz the quiz settings.
  */
 function quiz_update_all_final_grades($quiz) {
     global $DB;
@@ -1218,8 +1218,8 @@ function quiz_get_attempt_usertime_sql($redundantwhereclauses = '') {
  *
  * Which attempt is the best depends on $quiz->grademethod. If the grade
  * method is GRADEAVERAGE then this function simply returns the last attempt.
- * @return object         The attempt with the best grade
- * @param object $quiz    The quiz for which the best grade is to be calculated
+ * @return stdClass         The attempt with the best grade
+ * @param stdClass $quiz    The quiz for which the best grade is to be calculated
  * @param array $attempts An array of all the attempts of the user at the quiz
  */
 function quiz_calculate_best_attempt($quiz, $attempts) {
@@ -1303,7 +1303,7 @@ function quiz_get_user_image_options() {
  * Return an user's timeclose for all quizzes in a course, hereby taking into account group and user overrides.
  *
  * @param int $courseid the course id.
- * @return object An object with of all quizids and close unixdates in this course, taking into account the most lenient
+ * @return stdClass An object with of all quizids and close unixdates in this course, taking into account the most lenient
  * overrides, if existing and 0 if no close date is set.
  */
 function quiz_get_user_timeclose($courseid) {
@@ -1374,9 +1374,9 @@ function quiz_attempt_state_name($state) {
 // Other quiz functions ////////////////////////////////////////////////////////
 
 /**
- * @param object $quiz the quiz.
+ * @param stdClass $quiz the quiz.
  * @param int $cmid the course_module object for this quiz.
- * @param object $question the question.
+ * @param stdClass $question the question.
  * @param string $returnurl url to return to after action is done.
  * @param int $variant which question variant to preview (optional).
  * @param bool $random if question is random, true.
@@ -1394,7 +1394,7 @@ function quiz_question_action_icons($quiz, $cmid, $question, $returnurl, $varian
 
 /**
  * @param int $cmid the course_module.id for this quiz.
- * @param object $question the question.
+ * @param stdClass $question the question.
  * @param string $returnurl url to return to after action is done.
  * @param string $contentbeforeicon some HTML content to be added inside the link, before the icon.
  * @return the HTML for an edit icon, view icon, or nothing for a question
@@ -1442,8 +1442,8 @@ function quiz_question_edit_button($cmid, $question, $returnurl, $contentafteric
 }
 
 /**
- * @param object $quiz the quiz settings
- * @param object $question the question
+ * @param stdClass $quiz the quiz settings
+ * @param stdClass $question the question
  * @param int $variant which question variant to preview (optional).
  * @return moodle_url to preview this question with the options from this quiz.
  */
@@ -1463,8 +1463,8 @@ function quiz_question_preview_url($quiz, $question, $variant = null) {
 }
 
 /**
- * @param object $quiz the quiz settings
- * @param object $question the question
+ * @param stdClass $quiz the quiz settings
+ * @param stdClass $question the question
  * @param bool $label if true, show the preview question label after the icon
  * @param int $variant which question variant to preview (optional).
  * @param bool $random if question is random, true.
@@ -1479,8 +1479,8 @@ function quiz_question_preview_button($quiz, $question, $label = false, $variant
 }
 
 /**
- * @param object $attempt the attempt.
- * @param object $context the quiz context.
+ * @param stdClass $attempt the attempt.
+ * @param stdClass $context the quiz context.
  * @return int whether flags should be shown/editable to the current user for this attempt.
  */
 function quiz_get_flag_option($attempt, $context) {
@@ -1497,8 +1497,8 @@ function quiz_get_flag_option($attempt, $context) {
 /**
  * Work out what state this quiz attempt is in - in the sense used by
  * quiz_get_review_options, not in the sense of $attempt->state.
- * @param object $quiz the quiz settings
- * @param object $attempt the quiz_attempt database row.
+ * @param stdClass $quiz the quiz settings
+ * @param stdClass $attempt the quiz_attempt database row.
  * @return int one of the display_options::DURING,
  *      IMMEDIATELY_AFTER, LATER_WHILE_OPEN or AFTER_CLOSE constants.
  */
@@ -1569,7 +1569,7 @@ function quiz_get_review_options($quiz, $attempt, $context) {
  * funciton is:
  * list($someoptions, $alloptions) = quiz_get_combined_reviewoptions(...)
  *
- * @param object $quiz the quiz instance.
+ * @param stdClass $quiz the quiz instance.
  * @param array $attempts an array of attempt objects.
  *
  * @return array of two options objects, one showing which options are true for
@@ -1610,7 +1610,7 @@ function quiz_get_combined_reviewoptions($quiz, $attempts) {
 /**
  * Sends a confirmation message to the student confirming that the attempt was processed.
  *
- * @param object $a lots of useful information that can be used in the message
+ * @param stdClass $a lots of useful information that can be used in the message
  *      subject and body.
  * @param bool $studentisonline is the student currently interacting with Moodle?
  *
@@ -1659,8 +1659,8 @@ function quiz_send_confirmation($recipient, $a, $studentisonline) {
 /**
  * Sends notification messages to the interested parties that assign the role capability
  *
- * @param object $recipient user object of the intended recipient
- * @param object $a associative array of replaceable fields for the templates
+ * @param stdClass $recipient user object of the intended recipient
+ * @param stdClass $a associative array of replaceable fields for the templates
  *
  * @return int|false as for {@link message_send()}.
  */
@@ -1706,11 +1706,11 @@ function quiz_send_notification($recipient, $submitter, $a) {
 /**
  * Send all the requried messages when a quiz attempt is submitted.
  *
- * @param object $course the course
- * @param object $quiz the quiz
- * @param object $attempt this attempt just finished
- * @param object $context the quiz context
- * @param object $cm the coursemodule for this quiz
+ * @param stdClass $course the course
+ * @param stdClass $quiz the quiz
+ * @param stdClass $attempt this attempt just finished
+ * @param stdClass $context the quiz context
+ * @param stdClass $cm the coursemodule for this quiz
  * @param bool $studentisonline is the student currently interacting with Moodle?
  *
  * @return bool true if all necessary messages were sent successfully, else false.
@@ -1885,7 +1885,7 @@ function quiz_send_overdue_message($attemptobj) {
  *
  * This sends the confirmation and notification messages, if required.
  *
- * @param object $event the event object.
+ * @param stdClass $event the event object.
  */
 function quiz_attempt_submitted_handler($event) {
     global $DB;
@@ -1916,7 +1916,7 @@ function quiz_attempt_submitted_handler($event) {
  * Send the notification message when a quiz attempt has been manual graded.
  *
  * @param quiz_attempt $attemptobj Some data about the quiz attempt.
- * @param object $userto
+ * @param stdClass $userto
  * @return int|false As for message_send.
  */
 function quiz_send_notify_manual_graded_message(quiz_attempt $attemptobj, object $userto): ?int {
@@ -2015,7 +2015,7 @@ function quiz_get_js_module() {
 /**
  * Creates a textual representation of a question for display.
  *
- * @param object $question A question object from the database questions table
+ * @param stdClass $question A question object from the database questions table
  * @param bool $showicon If true, show the question's icon with the question. False by default.
  * @param bool $showquestiontext If true (default), show question text after question name.
  *       If false, show only question name.
@@ -2085,7 +2085,7 @@ function quiz_require_question_use($questionid) {
  * Adds a question to a quiz by updating $quiz as well as the
  * quiz and quiz_slots tables. It also adds a page break if required.
  * @param int $questionid The id of the question to be added
- * @param object $quiz The extended quiz object as used by edit.php
+ * @param stdClass $quiz The extended quiz object as used by edit.php
  *      This is updated by this function
  * @param int $page Which page in quiz to add the question on. If 0 (default),
  *      add at the end
@@ -2436,14 +2436,14 @@ function quiz_validate_new_attempt(quiz_settings $quizobj, access_manager $acces
  *
  * @param quiz_settings $quizobj quiz object
  * @param int $attemptnumber the attempt number
- * @param object $lastattempt last attempt object
+ * @param stdClass $lastattempt last attempt object
  * @param bool $offlineattempt whether is an offline attempt or not
  * @param array $forcedrandomquestions slot number => question id. Used for random questions,
  *      to force the choice of a particular actual question. Intended for testing purposes only.
  * @param array $forcedvariants slot number => variant. Used for questions with variants,
  *      to force the choice of a particular variant. Intended for testing purposes only.
  * @param int $userid Specific user id to create an attempt for that user, null for current logged in user
- * @return object the new attempt
+ * @return stdClass the new attempt
  * @since  Moodle 3.1
  */
 function quiz_prepare_and_start_new_attempt(quiz_settings $quizobj, $attemptnumber, $lastattempt,
diff --git a/mod/quiz/report/grading/renderer.php b/mod/quiz/report/grading/renderer.php
index 624c0a35f05..584dcc7ca6b 100644
--- a/mod/quiz/report/grading/renderer.php
+++ b/mod/quiz/report/grading/renderer.php
@@ -35,9 +35,9 @@ class quiz_grading_renderer extends plugin_renderer_base {
     /**
      * Render no question notification.
      *
-     * @param object $quiz The quiz settings.
-     * @param object $cm The course-module for this quiz.
-     * @param object $context The quiz context.
+     * @param stdClass $quiz The quiz settings.
+     * @param stdClass $cm The course-module for this quiz.
+     * @param stdClass $context The quiz context.
      * @return string The HTML for the no questions message.
      */
     public function render_quiz_no_question_notification($quiz, $cm, $context) {
@@ -99,7 +99,7 @@ class quiz_grading_renderer extends plugin_renderer_base {
     /**
      * Render grade link for question.
      *
-     * @param object $counts
+     * @param stdClass $counts
      * @param string $type Type of grade.
      * @param string $gradestring Lang string.
      * @param moodle_url $gradequestionurl Url to grade question.
@@ -120,11 +120,11 @@ class quiz_grading_renderer extends plugin_renderer_base {
     /**
      * Render grading page.
      *
-     * @param object $questioninfo Information of a question.
+     * @param stdClass $questioninfo Information of a question.
      * @param moodle_url $listquestionsurl Url of the page that list all questions.
      * @param quiz_grading_settings_form $filterform Question filter form.
-     * @param object $paginginfo Pagination information.
-     * @param object $pagingbar Pagination bar information.
+     * @param stdClass $paginginfo Pagination information.
+     * @param stdClass $pagingbar Pagination bar information.
      * @param moodle_url $formaction Form submit url.
      * @param array $hiddeninputs List of hidden input fields.
      * @param string $gradequestioncontent HTML string of question content.
diff --git a/mod/quiz/report/grading/report.php b/mod/quiz/report/grading/report.php
index 9192a8179e5..95aa9b1c5f2 100644
--- a/mod/quiz/report/grading/report.php
+++ b/mod/quiz/report/grading/report.php
@@ -672,9 +672,9 @@ class quiz_grading_report extends report_base {
     /**
      * Initialise some parts of $PAGE and start output.
      *
-     * @param object $cm the course_module information.
-     * @param object $course the course settings.
-     * @param object $quiz the quiz settings.
+     * @param stdClass $cm the course_module information.
+     * @param stdClass $course the course settings.
+     * @param stdClass $quiz the quiz settings.
      * @param string $reportmode the report name.
      */
     public function print_header_and_tabs($cm, $course, $quiz, $reportmode = 'overview') {
diff --git a/mod/quiz/report/overview/overview_table.php b/mod/quiz/report/overview/overview_table.php
index f1ab1da042b..be264105402 100644
--- a/mod/quiz/report/overview/overview_table.php
+++ b/mod/quiz/report/overview/overview_table.php
@@ -29,7 +29,7 @@ class quiz_overview_table extends attempts_report_table {
 
     /**
      * Constructor
-     * @param object $quiz
+     * @param stdClass $quiz
      * @param context $context
      * @param string $qmsubselect
      * @param quiz_overview_options $options
@@ -176,7 +176,7 @@ class quiz_overview_table extends attempts_report_table {
 
     /**
      * Format an entry in an average row.
-     * @param object $record with fields grade and numaveraged.
+     * @param stdClass $record with fields grade and numaveraged.
      * @param bool $question true if this is a question score, false if it is an overall score.
      * @return string HTML fragment for an average score (with number of things included in the average).
      */
@@ -257,7 +257,7 @@ class quiz_overview_table extends attempts_report_table {
 
     /**
      * @param string $colname the name of the column.
-     * @param object $attempt the row of data - see the SQL in display() in
+     * @param stdClass $attempt the row of data - see the SQL in display() in
      * mod/quiz/report/overview/report.php to see what fields are present,
      * and what they are called.
      * @return string the contents of the cell.
diff --git a/mod/quiz/report/overview/report.php b/mod/quiz/report/overview/report.php
index 83c41a4dda6..a22eb7c00f9 100644
--- a/mod/quiz/report/overview/report.php
+++ b/mod/quiz/report/overview/report.php
@@ -256,8 +256,8 @@ class quiz_overview_report extends attempts_report {
     /**
      * Extends parent function processing any submitted actions.
      *
-     * @param object $quiz
-     * @param object $cm
+     * @param stdClass $quiz
+     * @param stdClass $cm
      * @param int $currentgroup
      * @param \core\dml\sql_join $groupstudentsjoins (joins, wheres, params)
      * @param \core\dml\sql_join $allowedjoins (joins, wheres, params)
@@ -296,8 +296,8 @@ class quiz_overview_report extends attempts_report {
 
     /**
      * Check necessary capabilities, and start the display of the regrade progress page.
-     * @param object $quiz the quiz settings.
-     * @param object $cm the cm object for the quiz.
+     * @param stdClass $quiz the quiz settings.
+     * @param stdClass $cm the cm object for the quiz.
      */
     protected function start_regrade($quiz, $cm) {
         require_capability('mod/quiz:regrade', $this->context);
@@ -333,7 +333,7 @@ class quiz_overview_report extends attempts_report {
      * Note, $attempt is not upgraded in the database. The caller needs to do that.
      * However, $attempt->sumgrades is updated, if this is not a dry run.
      *
-     * @param object $attempt the quiz attempt to regrade.
+     * @param stdClass $attempt the quiz attempt to regrade.
      * @param bool $dryrun if true, do a pretend regrade, otherwise do it for real.
      * @param array $slots if null, regrade all questions, otherwise, just regrade
      *      the questions with those slots.
@@ -452,7 +452,7 @@ class quiz_overview_report extends attempts_report {
     /**
      * Regrade attempts for this quiz, exactly which attempts are regraded is
      * controlled by the parameters.
-     * @param object $quiz the quiz settings.
+     * @param stdClass $quiz the quiz settings.
      * @param bool $dryrun if true, do a pretend regrade, otherwise do it for real.
      * @param \core\dml\sql_join|array $groupstudentsjoins empty for all attempts, otherwise regrade attempts
      * for these users.
@@ -495,7 +495,7 @@ class quiz_overview_report extends attempts_report {
     /**
      * Regrade those questions in those attempts that are marked as needing regrading
      * in the quiz_overview_regrades table.
-     * @param object $quiz the quiz settings.
+     * @param stdClass $quiz the quiz settings.
      * @param \core\dml\sql_join $groupstudentsjoins empty for all attempts, otherwise regrade attempts
      * for these users.
      */
@@ -557,7 +557,7 @@ class quiz_overview_report extends attempts_report {
      * In addition, if $attempt->regradeonlyslots is set, then only those slots
      * are regraded, otherwise all slots are regraded.
      *
-     * @param object $quiz the quiz settings.
+     * @param stdClass $quiz the quiz settings.
      * @param array $attempts of data from the quiz_attempts table, with extra data as above.
      * @param bool $dryrun if true, do a pretend regrade, otherwise do it for real.
      * @param \core\dml\sql_join $groupstudentsjoins empty for all attempts, otherwise regrade attempts
@@ -605,7 +605,7 @@ class quiz_overview_report extends attempts_report {
     /**
      * Count the number of attempts in need of a regrade.
      *
-     * @param object $quiz the quiz settings.
+     * @param stdClass $quiz the quiz settings.
      * @param \core\dml\sql_join $groupstudentsjoins (joins, wheres, params) If this is given, only data relating
      * to these users is cleared.
      * @return int the number of attempts.
@@ -654,7 +654,7 @@ class quiz_overview_report extends attempts_report {
 
     /**
      * Remove all information about pending/complete regrades from the database.
-     * @param object $quiz the quiz settings.
+     * @param stdClass $quiz the quiz settings.
      * @param \core\dml\sql_join $groupstudentsjoins (joins, wheres, params). If this is given, only data relating
      * to these users is cleared.
      */
@@ -681,7 +681,7 @@ class quiz_overview_report extends attempts_report {
     /**
      * Update the final grades for all attempts. This method is used following
      * a regrade.
-     * @param object $quiz the quiz settings.
+     * @param stdClass $quiz the quiz settings.
      * @param array $userids only update scores for these userids.
      * @param array $attemptids attemptids only update scores for these attempt ids.
      */
@@ -698,7 +698,7 @@ class quiz_overview_report extends attempts_report {
      * a chart based on the maximum grade to be given on a quiz. The width of
      * a band is the number of grade points it encapsulates.
      *
-     * @param object $quiz The quiz object.
+     * @param stdClass $quiz The quiz object.
      * @return array Contains the number of bands, and their width.
      */
     public static function get_bands_count_and_width($quiz) {
@@ -725,7 +725,7 @@ class quiz_overview_report extends attempts_report {
      *
      * @param int $bands The number of bands.
      * @param int $bandwidth The band width.
-     * @param object $quiz The quiz object.
+     * @param stdClass $quiz The quiz object.
      * @return string[] The labels.
      */
     public static function get_bands_labels($bands, $bandwidth, $quiz) {
diff --git a/mod/quiz/report/overview/tests/helpers.php b/mod/quiz/report/overview/tests/helpers.php
index 3400f44df17..8e9f7daa965 100644
--- a/mod/quiz/report/overview/tests/helpers.php
+++ b/mod/quiz/report/overview/tests/helpers.php
@@ -34,9 +34,9 @@ class testable_quiz_attempts_report extends attempts_report {
 
     /**
      * Override this function to displays the report.
-     * @param object $cm the course-module for this quiz.
-     * @param object $course the course we are in.
-     * @param object $quiz this quiz.
+     * @param stdClass $cm the course-module for this quiz.
+     * @param stdClass $course the course we are in.
+     * @param stdClass $quiz this quiz.
      */
     public function display($cm, $course, $quiz) {
 
@@ -45,8 +45,8 @@ class testable_quiz_attempts_report extends attempts_report {
     /**
      * Testable delete_selected_attempts function.
      *
-     * @param object $quiz
-     * @param object $cm
+     * @param stdClass $quiz
+     * @param stdClass $cm
      * @param array $attemptids
      * @param \core\dml\sql_join $allowedjoins
      */
diff --git a/mod/quiz/report/reportlib.php b/mod/quiz/report/reportlib.php
index 53ba5ed622b..bce7442ce73 100644
--- a/mod/quiz/report/reportlib.php
+++ b/mod/quiz/report/reportlib.php
@@ -90,7 +90,7 @@ function quiz_has_questions($quizid) {
 
 /**
  * Get the slots of real questions (not descriptions) in this quiz, in order.
- * @param object $quiz the quiz.
+ * @param stdClass $quiz the quiz.
  * @return array of slot => objects with fields
  *      ->slot, ->id, ->qtype, ->length, ->number, ->maxmark, ->category (for random questions).
  */
@@ -125,7 +125,7 @@ function quiz_report_get_significant_questions($quiz) {
 }
 
 /**
- * @param object $quiz the quiz settings.
+ * @param stdClass $quiz the quiz settings.
  * @return bool whether, for this quiz, it is possible to filter attempts to show
  *      only those that gave the final grade.
  */
@@ -137,7 +137,7 @@ function quiz_report_can_filter_only_graded($quiz) {
  * This is a wrapper for {@link quiz_report_grade_method_sql} that takes the whole quiz object instead of just the grading method
  * as a param. See definition for {@link quiz_report_grade_method_sql} below.
  *
- * @param object $quiz
+ * @param stdClass $quiz
  * @param string $quizattemptsalias sql alias for 'quiz_attempts' table
  * @return string sql to test if this is an attempt that will contribute towards the grade of the user
  */
@@ -316,7 +316,7 @@ function quiz_report_feedback_for_grade($grade, $quizid, $context) {
 /**
  * Format a number as a percentage out of $quiz->sumgrades
  * @param number $rawgrade the mark to format.
- * @param object $quiz the quiz settings
+ * @param stdClass $quiz the quiz settings
  * @param bool $round whether to round the results ot $quiz->decimalpoints.
  */
 function quiz_report_scale_summarks_as_percentage($rawmark, $quiz, $round = true) {
@@ -390,7 +390,7 @@ function quiz_report_download_filename($report, $courseshortname, $quizname) {
 
 /**
  * Get the default report for the current user.
- * @param object $context the quiz context.
+ * @param stdClass $context the quiz context.
  */
 function quiz_report_default_report($context) {
     $reports = quiz_report_list($context);
@@ -400,9 +400,9 @@ function quiz_report_default_report($context) {
 /**
  * Generate a message saying that this quiz has no questions, with a button to
  * go to the edit page, if the user has the right capability.
- * @param object $quiz the quiz settings.
- * @param object $cm the course_module object.
- * @param object $context the quiz context.
+ * @param stdClass $quiz the quiz settings.
+ * @param stdClass $cm the course_module object.
+ * @param stdClass $context the quiz context.
  * @return string HTML to output.
  */
 function quiz_no_questions_message($quiz, $cm, $context) {
@@ -421,7 +421,7 @@ function quiz_no_questions_message($quiz, $cm, $context) {
 /**
  * Should the grades be displayed in this report. That depends on the quiz
  * display options, and whether the quiz is graded.
- * @param object $quiz the quiz settings.
+ * @param stdClass $quiz the quiz settings.
  * @param context $context the quiz context.
  * @return bool
  */
diff --git a/mod/quiz/report/responses/first_or_all_responses_table.php b/mod/quiz/report/responses/first_or_all_responses_table.php
index b9787cf8af3..4a2ca7e49bf 100644
--- a/mod/quiz/report/responses/first_or_all_responses_table.php
+++ b/mod/quiz/report/responses/first_or_all_responses_table.php
@@ -114,7 +114,7 @@ class quiz_first_or_all_responses_table extends quiz_last_responses_table {
     /**
      * Find the state for $slot given after this try.
      *
-     * @param object $tablerow row data
+     * @param stdClass $tablerow row data
      * @param int $slot Slot number.
      * @return question_state The question state after the attempt.
      */
@@ -137,7 +137,7 @@ class quiz_first_or_all_responses_table extends quiz_last_responses_table {
     /**
      * Get the summary of the response after the try.
      *
-     * @param object $tablerow row data
+     * @param stdClass $tablerow row data
      * @param int $slot Slot number.
      * @return string summary for the question after this try.
      */
@@ -170,7 +170,7 @@ class quiz_first_or_all_responses_table extends quiz_last_responses_table {
     /**
      * The grade for this slot after this try.
      *
-     * @param object $tablerow attempt data from db.
+     * @param stdClass $tablerow attempt data from db.
      * @param int $slot Slot number.
      * @return float The fraction.
      */
@@ -192,7 +192,7 @@ class quiz_first_or_all_responses_table extends quiz_last_responses_table {
     /**
      * Is this the last try in the question attempt?
      *
-     * @param object $tablerow attempt data from db.
+     * @param stdClass $tablerow attempt data from db.
      * @param int $slot Slot number
      * @param int $tryno try no
      * @return bool Is it the last try?
@@ -204,7 +204,7 @@ class quiz_first_or_all_responses_table extends quiz_last_responses_table {
     /**
      * How many tries were attempted at this question in this slot, during this usage?
      *
-     * @param object $tablerow attempt data from db.
+     * @param stdClass $tablerow attempt data from db.
      * @param int $slot Slot number
      * @return int the number of tries in the question attempt for slot $slot.
      */
@@ -237,7 +237,7 @@ class quiz_first_or_all_responses_table extends quiz_last_responses_table {
     /**
      * Cell value function for email column. This extracts the contents for any cell in the email column from the row data.
      *
-     * @param object $tablerow Row data.
+     * @param stdClass $tablerow Row data.
      * @return string   What to put in the cell for this column, for this row data.
      */
     public function col_email($tablerow) {
@@ -251,7 +251,7 @@ class quiz_first_or_all_responses_table extends quiz_last_responses_table {
     /**
      * Cell value function for sumgrades column. This extracts the contents for any cell in the sumgrades column from the row data.
      *
-     * @param object $tablerow Row data.
+     * @param stdClass $tablerow Row data.
      * @return string   What to put in the cell for this column, for this row data.
      */
     public function col_sumgrades($tablerow) {
diff --git a/mod/quiz/report/responses/last_responses_table.php b/mod/quiz/report/responses/last_responses_table.php
index 033de2a9311..5d2868ba1f4 100644
--- a/mod/quiz/report/responses/last_responses_table.php
+++ b/mod/quiz/report/responses/last_responses_table.php
@@ -27,7 +27,7 @@ class quiz_last_responses_table extends attempts_report_table {
 
     /**
      * Constructor
-     * @param object $quiz
+     * @param stdClass $quiz
      * @param context $context
      * @param string $qmsubselect
      * @param quiz_responses_options $options
@@ -94,7 +94,7 @@ class quiz_last_responses_table extends attempts_report_table {
     /**
      * Column text from the extra data loaded in load_extra_data(), before html formatting etc.
      *
-     * @param object $attempt
+     * @param stdClass $attempt
      * @param int $slot
      * @param string $field
      * @return string
diff --git a/mod/quiz/report/statistics/classes/calculator.php b/mod/quiz/report/statistics/classes/calculator.php
index e6ff9567a69..0797838bab8 100644
--- a/mod/quiz/report/statistics/classes/calculator.php
+++ b/mod/quiz/report/statistics/classes/calculator.php
@@ -265,7 +265,7 @@ class calculator {
      * @param $fromqa
      * @param $whereqa
      * @param $qaparams
-     * @return object with properties power2, power3, power4
+     * @return stdClass with properties power2, power3, power4
      */
     protected function sum_of_powers_of_difference_to_mean($mean, $fromqa, $whereqa, $qaparams) {
         global $DB;
diff --git a/mod/quiz/report/statistics/report.php b/mod/quiz/report/statistics/report.php
index 96162615bf8..0f92bd4eb3e 100644
--- a/mod/quiz/report/statistics/report.php
+++ b/mod/quiz/report/statistics/report.php
@@ -284,7 +284,7 @@ class quiz_statistics_report extends report_base {
      * Display the statistical and introductory information about a question.
      * Only called when not downloading.
      *
-     * @param object                                         $quiz         the quiz settings.
+     * @param stdClass                                         $quiz         the quiz settings.
      * @param \core_question\statistics\questions\calculated $questionstat the question to report on.
      */
     protected function output_individual_question_data($quiz, $questionstat) {
@@ -353,7 +353,7 @@ class quiz_statistics_report extends report_base {
     /**
      * Output question text in a box with urls appropriate for a preview of the question.
      *
-     * @param object $question question data.
+     * @param stdClass $question question data.
      * @return string HTML of question text, ready for display.
      */
     protected function render_question_text($question) {
@@ -371,7 +371,7 @@ class quiz_statistics_report extends report_base {
     /**
      * Display the response analysis for a question.
      *
-     * @param object           $question  the question to report on.
+     * @param stdClass           $question  the question to report on.
      * @param int|null         $variantno the variant
      * @param int              $s
      * @param moodle_url       $reporturl the URL to redisplay this report.
@@ -617,7 +617,7 @@ class quiz_statistics_report extends report_base {
      * Get the quiz and question statistics, either by loading the cached results,
      * or by recomputing them.
      *
-     * @param object $quiz               the quiz settings.
+     * @param stdClass $quiz               the quiz settings.
      * @param string $whichattempts      which attempts to use, represented internally as one of the constants as used in
      *                                   $quiz->grademethod ie.
      *                                   QUIZ_GRADEAVERAGE, QUIZ_GRADEHIGHEST, QUIZ_ATTEMPTLAST or QUIZ_ATTEMPTFIRST
@@ -694,8 +694,8 @@ class quiz_statistics_report extends report_base {
     /**
      * Analyse responses for all questions and sub questions in this quiz.
      *
-     * @param object[] $questions as returned by self::load_and_initialise_questions_for_calculations
-     * @param object[] $subquestions full question objects.
+     * @param stdClass[] $questions as returned by self::load_and_initialise_questions_for_calculations
+     * @param stdClass[] $subquestions full question objects.
      * @param qubaid_condition $qubaids the question usages whose responses to analyse.
      * @param string $whichtries which tries to analyse \question_attempt::FIRST_TRY, LAST_TRY or ALL_TRIES.
      * @param null|\core\progress\base $progress Used to indicate progress of task.
@@ -720,7 +720,7 @@ class quiz_statistics_report extends report_base {
     /**
      * Analyse responses for an array of questions or sub questions.
      *
-     * @param object[] $questions  as returned by self::load_and_initialise_questions_for_calculations.
+     * @param stdClass[] $questions  as returned by self::load_and_initialise_questions_for_calculations.
      * @param qubaid_condition $qubaids the question usages whose responses to analyse.
      * @param string $whichtries which tries to analyse \question_attempt::FIRST_TRY, LAST_TRY or ALL_TRIES.
      * @param null|\core\progress\base $progress Used to indicate progress of task.
@@ -829,7 +829,7 @@ class quiz_statistics_report extends report_base {
     /**
      * Load the questions in this quiz and add some properties to the objects needed in the reports.
      *
-     * @param object $quiz the quiz.
+     * @param stdClass $quiz the quiz.
      * @return array of questions for this quiz.
      */
     public function load_and_initialise_questions_for_calculations($quiz) {
diff --git a/mod/quiz/report/statistics/statistics_question_table.php b/mod/quiz/report/statistics/statistics_question_table.php
index bd899421246..f2a1045f035 100644
--- a/mod/quiz/report/statistics/statistics_question_table.php
+++ b/mod/quiz/report/statistics/statistics_question_table.php
@@ -40,7 +40,7 @@ require_once($CFG->libdir . '/tablelib.php');
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class quiz_statistics_question_table extends flexible_table {
-    /** @var object full question object for this question. */
+    /** @var stdClass full question object for this question. */
     protected $questiondata;
 
     /** @var  int no of attempts. */
@@ -60,7 +60,7 @@ class quiz_statistics_question_table extends flexible_table {
      * Set up columns and column names and other table settings.
      *
      * @param moodle_url $reporturl
-     * @param object     $questiondata
+     * @param stdClass     $questiondata
      * @param integer    $s             number of attempts on this question.
      * @param \core_question\statistics\responses\analysis_for_question $responseanalysis
      */
@@ -138,7 +138,7 @@ class quiz_statistics_question_table extends flexible_table {
 
     /**
      * The mark fraction that this response earns.
-     * @param object $response containst the data to display.
+     * @param stdClass $response containst the data to display.
      * @return string contents of this table cell.
      */
     protected function col_fraction($response) {
@@ -151,7 +151,7 @@ class quiz_statistics_question_table extends flexible_table {
 
     /**
      * The frequency with which this response was given.
-     * @param object $response contains the data to display.
+     * @param stdClass $response contains the data to display.
      * @return string contents of this table cell.
      */
     protected function col_frequency($response) {
@@ -167,7 +167,7 @@ class quiz_statistics_question_table extends flexible_table {
      * then this is the output for this cell of the table.
      *
      * @param string $colname  The name of this column.
-     * @param object $response The raw data for this row.
+     * @param stdClass $response The raw data for this row.
      * @return string|null The value for this cell of the table or null means use raw data.
      */
     public function other_cols($colname, $response) {
diff --git a/mod/quiz/report/statistics/statistics_table.php b/mod/quiz/report/statistics/statistics_table.php
index 04538b0e9c8..75fc853a9d4 100644
--- a/mod/quiz/report/statistics/statistics_table.php
+++ b/mod/quiz/report/statistics/statistics_table.php
@@ -38,7 +38,7 @@ use \core_question\statistics\questions\calculated_question_summary;
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 class quiz_statistics_table extends flexible_table {
-    /** @var object the quiz settings. */
+    /** @var stdClass the quiz settings. */
     protected $quiz;
 
     /** @var integer the quiz course_module id. */
@@ -55,7 +55,7 @@ class quiz_statistics_table extends flexible_table {
      * Set up the columns and headers and other properties of the table and then
      * call flexible_table::setup() method.
      *
-     * @param object $quiz the quiz settings
+     * @param stdClass $quiz the quiz settings
      * @param int $cmid the quiz course_module id
      * @param moodle_url $reporturl the URL to redisplay this report.
      * @param int $s number of attempts included in the statistics.
diff --git a/mod/quiz/report/statistics/tests/statistics_test.php b/mod/quiz/report/statistics/tests/statistics_test.php
index 0706c6d3931..6cc6a2488d7 100644
--- a/mod/quiz/report/statistics/tests/statistics_test.php
+++ b/mod/quiz/report/statistics/tests/statistics_test.php
@@ -53,7 +53,7 @@ class testable_all_calculated_for_qubaid_condition extends \core_question\statis
 class testable_question_statistics extends \core_question\statistics\questions\calculator {
 
     /**
-     * @var object[]
+     * @var stdClass[]
      */
     protected $lateststeps;
 
diff --git a/mod/quiz/tests/custom_completion_test.php b/mod/quiz/tests/custom_completion_test.php
index bf4c6085c5d..6b05052dcae 100644
--- a/mod/quiz/tests/custom_completion_test.php
+++ b/mod/quiz/tests/custom_completion_test.php
@@ -462,9 +462,9 @@ class custom_completion_test extends advanced_testcase {
     /**
      * Set up moduleinfo object sample data for quiz instance.
      *
-     * @param object $cm course-module instance
-     * @param object $quiz quiz instance data.
-     * @param object $course Course related data.
+     * @param stdClass $cm course-module instance
+     * @param stdClass $quiz quiz instance data.
+     * @param stdClass $course Course related data.
      * @param int $gradepass Grade to pass and completed completion.
      * @param string $grademethod grade attempt method.
      * @return \stdClass