MDL-74255 quiz: Remove un-needed method question_array_sort

mod/quiz/attemptlib.php

@@ -152,8 +152,8 @@ class quiz {
         if (!empty($questionids)) {
             $questiondata = \mod_quiz\question\bank\qbank_helper::get_question_structure_data($this->quiz->id, $questionids, true);
         }
-        $allquestiondata = \mod_quiz\question\bank\qbank_helper::question_array_sort(
+        $allquestiondata = \mod_quiz\question\bank\qbank_helper::question_load_random_questions(
-            \mod_quiz\question\bank\qbank_helper::question_load_random_questions($this->quiz->id, $questiondata), 'slot');
+                $this->quiz->id, $questiondata);
         $this->questions = $allquestiondata;
     }
 

mod/quiz/classes/question/bank/qbank_helper.php

@@ -68,23 +68,6 @@ class qbank_helper {
         return $DB->get_records_sql($sql, [$questionid]);
     }
 
-    /**
-     * Sort the elements of an array according to a key.
-     *
-     * @param array $arrays
-     * @param string $on
-     * @param int $order
-     * @return array
-     */
-    public static function question_array_sort($arrays, $on, $order = SORT_ASC): array {
-        $element = [];
-        foreach ($arrays as $array) {
-            $element[$array->$on] = $array;
-        }
-        ksort($element, $order);
-        return $element;
-    }
-
     /**
      * Get the question id from slot id.
      *
@@ -204,10 +187,10 @@ class qbank_helper {
     /**
      * Get the question structure data for the given quiz or question ids.
      *
-     * @param null $quizid
+     * @param int $quizid ID of the quiz to load data for.
      * @param array $questionids
-     * @param bool $attempt
+     * @param bool $attempt if false (default) array key is slot number, else array key is question.id.
-     * @return array
+     * @return array the question data, ordered by slot number.
      */
     public static function get_question_structure_data($quizid, $questionids = [], $attempt = false) {
         global $DB;
@@ -245,16 +228,14 @@ class qbank_helper {
              LEFT JOIN {question_categories} qc ON qc.id = qbe.questioncategoryid
              LEFT JOIN {question} q ON q.id = qv.questionid
                  WHERE slot.quizid = :quizid
-             $condition";
+                       $condition
+              ORDER BY slot.slot";
         $questiondatas = $DB->get_records_sql($sql, $params);
         foreach ($questiondatas as $questiondata) {
             $questiondata->_partiallyloaded = true;
         }
-        if (!empty($questiondatas)) {
         return $questiondatas;
     }
-        return [];
-    }
 
     /**
      * Get question structure.
@@ -274,7 +255,9 @@ class qbank_helper {
             }
         }
 
-        return self::question_array_sort(array_merge($firstslotsets, $secondslotsets), 'slot');
+        $data = array_merge($firstslotsets, $secondslotsets);
+        ksort($data);
+        return $data;
     }
 
     /**
@@ -329,7 +312,7 @@ class qbank_helper {
         }
 
         foreach ($randomquestions as $randomquestion) {
-            // Should not add if there is no question found from the ramdom question loader, maybe empty category.
+            // Should not add if there is no question found from the random question loader, maybe empty category.
             if ($randomquestion->questionid === null) {
                 continue;
             }
@@ -346,6 +329,8 @@ class qbank_helper {
             $questiondata[$question->id] = $question;
         }
 
+        uasort($questiondata, function (\stdClass $a, \stdClass $b): int { return ($a->slot <=> $b->slot); });
+
         return $questiondata;
     }
 

mod/quiz/report/reportlib.php

@@ -114,7 +114,7 @@ function quiz_report_get_significant_questions($quiz) {
         }
         $qsbyslot[$slotreport->slot] = $slotreport;
     }
-    $qsbyslot = \mod_quiz\question\bank\qbank_helper::question_array_sort($qsbyslot, 'slot');
+    ksort($qsbyslot);
     $number = 1;
     foreach ($qsbyslot as $question) {
         $question->number = $number;

mod/quiz/report/statistics/report.php

@@ -856,7 +856,8 @@ class quiz_statistics_report extends quiz_default_report {
         foreach ($randomquestions as $randomquestion) {
             $questiondata[$randomquestion->slot] = $randomquestion;
         }
-        return \mod_quiz\question\bank\qbank_helper::question_array_sort($questiondata, 'slot');
+        ksort($questiondata);
+        return $questiondata;
     }
 
     /**

mod/quiz/tests/qbank_helper_test.php

@@ -80,7 +80,6 @@ class qbank_helper_test extends \advanced_testcase {
      * @covers ::get_question_for_redo
      * @covers ::get_always_latest_version_question_ids
      * @covers ::question_load_random_questions
-     * @covers ::question_array_sort
      */
     public function test_reference_records() {
         $this->resetAfterTest();
@@ -130,7 +129,6 @@ class qbank_helper_test extends \advanced_testcase {
      *
      * @covers ::get_question_structure
      * @covers ::get_question_structure_data
-     * @covers ::question_array_sort
      * @covers ::get_always_latest_version_question_ids
      * @covers ::question_load_random_questions
      */