diff --git a/backup/moodle2/backup_format_grid_plugin.class.php b/backup/moodle2/backup_format_grid_plugin.class.php
index 7feafec1..a06a1007 100644
--- a/backup/moodle2/backup_format_grid_plugin.class.php
+++ b/backup/moodle2/backup_format_grid_plugin.class.php
@@ -54,13 +54,13 @@ protected function define_section_plugin_structure() {
         // Create one standard named plugin element (the visible container).
         // The sectionid and courseid not required as populated on restore.
         $recomendedname = $this->get_recommended_name();
-        $section = new backup_nested_element($recomendedname, array('sectionid'), array('image', 'contenthash'));
+        $section = new backup_nested_element($recomendedname, ['sectionid'], ['image', 'contenthash']);
 
         // Connect the visible container ASAP.
         $plugin->add_child($section);
 
         // Set source to populate the data.
-        $section->set_source_table('format_grid_image', array('sectionid' => backup::VAR_SECTIONID));
+        $section->set_source_table('format_grid_image', ['sectionid' => backup::VAR_SECTIONID]);
         $section->annotate_files('format_grid', 'sectionimage', 'sectionid');
 
         return $plugin;
diff --git a/backup/moodle2/restore_format_grid_plugin.class.php b/backup/moodle2/restore_format_grid_plugin.class.php
index 3d31ecda..e91013df 100644
--- a/backup/moodle2/restore_format_grid_plugin.class.php
+++ b/backup/moodle2/restore_format_grid_plugin.class.php
@@ -54,7 +54,7 @@ protected function define_course_plugin_structure() {
             $this->originalnumsections = (int)$maxsection;
         }
 
-        $paths = array();
+        $paths = [];
 
         // Add own format stuff.
         $elename = 'grid'; // This defines the postfix of 'process_*' below.
@@ -80,14 +80,14 @@ public function process_grid($data) {
         $courseid = $this->task->get_courseid();
         /* We only process this information if the course we are restoring to
            has 'grid' format (target format can change depending of restore options). */
-        $format = $DB->get_field('course', 'format', array('id' => $courseid));
+        $format = $DB->get_field('course', 'format', ['id' => $courseid]);
         if ($format !== 'grid') {
             return;
         }
 
         $data->courseid = $courseid;
 
-        if (!($course = $DB->get_record('course', array('id' => $data->courseid)))) {
+        if (!($course = $DB->get_record('course', ['id' => $data->courseid]))) {
             throw new \moodle_exception('invalidcourseid', 'format_grid', '',
                 get_string('invalidcourseid', 'error'));
         } // From /course/view.php.
@@ -107,7 +107,7 @@ public function after_restore_course() {
 
         /* We only process this information if the course we are restoring to
            has 'grid' format (target format can change depending of restore options). */
-        $format = $DB->get_field('course', 'format', array('id' => $courseid));
+        $format = $DB->get_field('course', 'format', ['id' => $courseid]);
         if ($format !== 'grid') {
             return;
         }
@@ -123,7 +123,7 @@ public function after_restore_course() {
                 if (!$file->is_directory()) {
                     $filename = $file->get_filename();
                     $filesectionid = $file->get_itemid();
-                    $gridimage = $DB->get_record('format_grid_image', array('sectionid' => $filesectionid), 'image');
+                    $gridimage = $DB->get_record('format_grid_image', ['sectionid' => $filesectionid], 'image');
                     if (($gridimage) && ($gridimage->image == $filename)) { // Ensure the correct file.
                         $filerecord = new stdClass();
                         $filerecord->contextid = $coursecontext->id;
@@ -134,7 +134,7 @@ public function after_restore_course() {
                         $newfile = $fs->create_file_from_storedfile($filerecord, $file);
                         if ($newfile) {
                             $DB->set_field('format_grid_image', 'contenthash', $newfile->get_contenthash(),
-                                array('sectionid' => $filesectionid));
+                                ['sectionid' => $filesectionid]);
                         }
                     }
                 }
@@ -179,7 +179,7 @@ public function after_restore_course() {
      */
     protected function define_section_plugin_structure() {
 
-        $paths = array();
+        $paths = [];
 
         // Add own format stuff.
         $elepath = $this->get_pathfor('/');  // Note: $this->get_recommended_name() gets! -> section/the name.
@@ -220,7 +220,7 @@ public function process_gridsection($data) {
                 $existinggridimage = false;
                 if (($target == backup::TARGET_CURRENT_ADDING) ||
                     ($target == backup::TARGET_EXISTING_ADDING)) {
-                    $existinggridimage = $DB->get_record('format_grid_image', array('sectionid' => $newsectionid), 'image');
+                    $existinggridimage = $DB->get_record('format_grid_image', ['sectionid' => $newsectionid], 'image');
                 }
                 if (!$existinggridimage) {
                     // No image, so add the one from the backup file.
diff --git a/classes/admin_setting_information.php b/classes/admin_setting_information.php
index f759fb6e..3b2e5ca8 100644
--- a/classes/admin_setting_information.php
+++ b/classes/admin_setting_information.php
@@ -100,19 +100,19 @@ public function output_html($data, $query='') {
         }
 
         $classes[] = 'fa fa-heart';
-        $attributes = array();
+        $attributes = [];
         $attributes['aria-hidden'] = 'true';
         $attributes['class'] = 'fa fa-heart';
         $attributes['title'] = get_string('love', 'format_grid');
-        $content = \html_writer::tag('span', $attributes['title'], array('class' => 'sr-only'));
+        $content = \html_writer::tag('span', $attributes['title'], ['class' => 'sr-only']);
         $content = \html_writer::tag('span', $content, $attributes);
         $context['versioninfo'] = get_string('versioninfo', 'format_grid',
-            array(
+            [
                 'moodle' => $CFG->release,
                 'release' => $plugininfo->release,
                 'version' => $plugininfo->version,
-                'love' => $content
-            )
+                'love' => $content,
+            ]
         );
 
         if (!empty($plugininfo->maturity)) {
diff --git a/classes/observer.php b/classes/observer.php
index 46838a04..5d058cee 100644
--- a/classes/observer.php
+++ b/classes/observer.php
@@ -55,7 +55,7 @@ public static function course_content_deleted(\core\event\course_content_deleted
      */
     public static function course_restored(\core\event\course_restored $event) {
         global $DB;
-        $format = $DB->get_field('course', 'format', array('id' => $event->objectid));
+        $format = $DB->get_field('course', 'format', ['id' => $event->objectid]);
         // If not in the grid format, then don't need the images etc.
         if ($format != 'grid') {
             // Then delete the images.
diff --git a/classes/output/courseformat/content.php b/classes/output/courseformat/content.php
index e4987dc5..fb1dfee0 100644
--- a/classes/output/courseformat/content.php
+++ b/classes/output/courseformat/content.php
@@ -39,9 +39,9 @@
  */
 class content extends content_base {
 
-    private $sectioncompletionpercentage = array();
-    private $sectioncompletionmarkup = array();
-    private $sectioncompletioncalculated = array();
+    private $sectioncompletionpercentage = [];
+    private $sectioncompletionmarkup = [];
+    private $sectioncompletioncalculated = [];
 
     /**
      * @var bool Grid format does not add section after each topic.
@@ -106,11 +106,11 @@ public function export_for_template(\renderer_base $output) {
             $data->hasnavigation = true;
             $data->singlesection = array_shift($data->sections);
             $data->sectionreturn = $singlesection;
-            $data->maincoursepage = new \moodle_url('/course/view.php', array('id' => $course->id));
+            $data->maincoursepage = new \moodle_url('/course/view.php', ['id' => $course->id]);
         } else {
             $coursesettings = $format->get_settings();
             $toolbox = \format_grid\toolbox::get_instance();
-            $coursesectionimages = $DB->get_records('format_grid_image', array('courseid' => $course->id));
+            $coursesectionimages = $DB->get_records('format_grid_image', ['courseid' => $course->id]);
             if (!empty($coursesectionimages)) {
                 $fs = get_file_storage();
                 $coursecontext = \context_course::instance($course->id);
@@ -128,8 +128,8 @@ public function export_for_template(\renderer_base $output) {
                 $data->popup = false;
                 if ((!empty($coursesettings['popup'])) && ($coursesettings['popup'] == 2)) {
                     $data->popup = true;
-                    $data->popupsections = array();
-                    $potentialpopupsections = array();
+                    $data->popupsections = [];
+                    $potentialpopupsections = [];
                     foreach ($sections as $section) {
                         $potentialpopupsections[$section->id] = $section;
                     }
@@ -137,20 +137,20 @@ public function export_for_template(\renderer_base $output) {
             }
 
             // Suitable array.
-            $sectionimages = array();
+            $sectionimages = [];
             foreach ($coursesectionimages as $coursesectionimage) {
                 $sectionimages[$coursesectionimage->sectionid] = $coursesectionimage;
             }
 
             // Now iterate over the sections.
-            $data->gridsections = array();
+            $data->gridsections = [];
             $sectionsforgrid = $this->get_grid_sections($output, $coursesettings);
             $displayediswebp = (get_config('format_grid', 'defaultdisplayedimagefiletype') == 2);
 
             $completionshown = false;
             $headerimages = false;
             if ($editing) {
-                $datasectionmap = array();
+                $datasectionmap = [];
                 foreach ($data->sections as $datasectionkey => $datasection) {
                     $datasectionmap[$datasection->id] = $datasectionkey;
                 }
@@ -187,7 +187,7 @@ public function export_for_template(\renderer_base $output) {
                     // Section link.
                     $sectionimages[$section->id]->sectionurl = new \moodle_url(
                         '/course/view.php',
-                        array('id' => $course->id, 'section' => $section->num)
+                        ['id' => $course->id, 'section' => $section->num]
                     );
                     $sectionimages[$section->id]->sectionurl = $sectionimages[$section->id]->sectionurl->out(false);
 
diff --git a/classes/output/courseformat/content/section/controlmenu.php b/classes/output/courseformat/content/section/controlmenu.php
index a315e36c..caa0f78a 100644
--- a/classes/output/courseformat/content/section/controlmenu.php
+++ b/classes/output/courseformat/content/section/controlmenu.php
@@ -84,7 +84,7 @@ public function section_control_items() {
                     'pixattr' => ['class' => ''],
                     'attr' => [
                         'class' => 'editing_highlight',
-                        'data-action' => 'removemarker'
+                        'data-action' => 'removemarker',
                     ],
                 ];
             } else {
@@ -97,7 +97,7 @@ public function section_control_items() {
                     'pixattr' => ['class' => ''],
                     'attr' => [
                         'class' => 'editing_highlight',
-                        'data-action' => 'setmarker'
+                        'data-action' => 'setmarker',
                     ],
                 ];
             }
diff --git a/classes/output/courseformat/content/section/summary.php b/classes/output/courseformat/content/section/summary.php
index 0108ba16..048cb381 100644
--- a/classes/output/courseformat/content/section/summary.php
+++ b/classes/output/courseformat/content/section/summary.php
@@ -111,7 +111,7 @@ protected function singlepagesummaryimage($summary, $output): string {
                 $sectionid = $this->thesection->id;
                 $coursesectionimage = $DB->get_record(
                     'format_grid_image',
-                    array('courseid' => $courseid, 'sectionid' => $sectionid)
+                    ['courseid' => $courseid, 'sectionid' => $sectionid]
                 );
                 if (!empty($coursesectionimage)) {
                     $fs = get_file_storage();
diff --git a/classes/toolbox.php b/classes/toolbox.php
index 1e9bf95e..fcc0e607 100644
--- a/classes/toolbox.php
+++ b/classes/toolbox.php
@@ -40,11 +40,11 @@ class toolbox {
     protected static $instance = null;
 
     // Width constants - 128, 192, 210, 256, 320, 384, 448, 512, 576, 640, 704 and 768:...
-    private static $imagecontainerwidths = array(128 => '128', 192 => '192', 210 => '210', 256 => '256', 320 => '320',
-        384 => '384', 448 => '448', 512 => '512', 576 => '576', 640 => '640', 704 => '704', 768 => '768');
+    private static $imagecontainerwidths = [128 => '128', 192 => '192', 210 => '210', 256 => '256', 320 => '320',
+        384 => '384', 448 => '448', 512 => '512', 576 => '576', 640 => '640', 704 => '704', 768 => '768', ];
     // Ratio constants - 3-2, 3-1, 3-3, 2-3, 1-3, 4-3 and 3-4:...
-    private static $imagecontainerratios = array(
-        1 => '3-2', 2 => '3-1', 3 => '3-3', 4 => '2-3', 5 => '1-3', 6 => '4-3', 7 => '3-4');
+    private static $imagecontainerratios = [
+        1 => '3-2', 2 => '3-1', 3 => '3-3', 4 => '2-3', 5 => '1-3', 6 => '4-3', 7 => '3-4', ];
 
     /**
      * This is a lonely object.
@@ -221,12 +221,12 @@ public function setup_displayed_image($sectionimage, $sectionfile, $courseid, $s
                 }
             }
 
-            $debugdata = array(
+            $debugdata = [
                 'id' => $sectionfile->get_id(),
                 'itemid' => $sectionfile->get_itemid(),
                 'filename' => $filename,
-                'sectionid' => $sectionid
-            );
+                'sectionid' => $sectionid,
+            ];
             $data = self::generate_image($tmpfilepath, $displayedimageinfo['width'], $displayedimageinfo['height'], $crop, $newmime,
                 $debugdata);
             if (!empty($data)) {
@@ -242,7 +242,7 @@ public function setup_displayed_image($sectionimage, $sectionfile, $courseid, $s
                 }
 
                 $created = time();
-                $displayedimagefilerecord = array(
+                $displayedimagefilerecord = [
                     'contextid' => $coursecontext->id,
                     'component' => 'format_grid',
                     'filearea' => 'displayedsectionimage',
@@ -254,7 +254,8 @@ public function setup_displayed_image($sectionimage, $sectionfile, $courseid, $s
                     'license' => $sectionfile->get_license(),
                     'timecreated' => $created,
                     'timemodified' => $created,
-                    'mimetype' => $mime);
+                    'mimetype' => $mime,
+                ];
 
                 if ($isdisplayedwebponly) { // Displayed WebP image from non-WebP original.
                     // Displayed image is a webp image from the original, so change a few things.
@@ -269,7 +270,7 @@ public function setup_displayed_image($sectionimage, $sectionfile, $courseid, $s
             unlink($tmpfilepath);
 
             $DB->set_field('format_grid_image', 'displayedimagestate', $sectionimage->displayedimagestate,
-                array('sectionid' => $sectionid));
+                ['sectionid' => $sectionid]);
             if ($sectionimage->displayedimagestate == -1) {
                 throw new \moodle_exception('cannotconvertuploadedimagetodisplayedimage', 'format_grid', '',
                     get_string('cannotconvertuploadedimagetodisplayedimage', 'format_grid',
@@ -290,8 +291,8 @@ public function setup_displayed_image($sectionimage, $sectionfile, $courseid, $s
      * @return array with the key => value of 'height' and 'width' for the container.
      */
     public function get_displayed_image_container_properties($settings) {
-        return array('height' => self::calculate_height($settings['imagecontainerwidth'], $settings['imagecontainerratio']),
-            'width' => $settings['imagecontainerwidth']);
+        return ['height' => self::calculate_height($settings['imagecontainerwidth'], $settings['imagecontainerratio']),
+            'width' => $settings['imagecontainerwidth'], ];
     }
 
     /**
@@ -401,9 +402,9 @@ private static function generate_image($filepath, $requestedwidth, $requestedhei
 
         $original = imagecreatefromstring(file_get_contents($filepath)); // Need to alter / check for webp support.
 
-        $imageargs = array(
-            1 => null // File.
-        );
+        $imageargs = [
+            1 => null, // File.
+        ];
         switch ($mime) {
             case 'image/png':
                 if (function_exists('imagepng')) {
@@ -607,7 +608,7 @@ private static function update_the_displayed_images($courseid = null) {
         global $DB;
 
         if (!empty($courseid)) {
-            $coursesectionimages = $DB->get_records('format_grid_image', array('courseid' => $courseid));
+            $coursesectionimages = $DB->get_records('format_grid_image', ['courseid' => $courseid]);
         } else {
             $coursesectionimages = $DB->get_records('format_grid_image');
         }
@@ -681,7 +682,7 @@ public static function delete_images($courseid) {
             $displayedimage->delete();
         }
 
-        $DB->delete_records("format_grid_image", array('courseid' => $courseid));
+        $DB->delete_records("format_grid_image", ['courseid' => $courseid]);
     }
 
     /**
@@ -693,7 +694,7 @@ public static function delete_images($courseid) {
     public static function delete_image($sectionid, $courseid) {
         global $DB;
 
-        $coursesectionimage = $DB->get_record('format_grid_image', array('courseid' => $courseid, 'sectionid' => $sectionid));
+        $coursesectionimage = $DB->get_record('format_grid_image', ['courseid' => $courseid, 'sectionid' => $sectionid]);
         if (!empty($coursesectionimage)) {
             $fs = get_file_storage();
 
@@ -732,7 +733,7 @@ public static function delete_image($sectionid, $courseid) {
                     get_string('cannotgetmanagesectionimagelock', 'format_grid')
                 );
             }
-            $DB->delete_records("format_grid_image", array('courseid' => $courseid, 'sectionid' => $sectionid));
+            $DB->delete_records("format_grid_image", ['courseid' => $courseid, 'sectionid' => $sectionid]);
         }
     }
 }
diff --git a/db/events.php b/db/events.php
index d120fb59..aab0061d 100644
--- a/db/events.php
+++ b/db/events.php
@@ -30,14 +30,13 @@
 defined('MOODLE_INTERNAL') || die();
 
 // List of observers.
-$observers = array(
-
-    array(
+$observers = [
+    [
         'eventname' => '\core\event\course_content_deleted',
         'callback' => 'format_grid_observer::course_content_deleted',
-    ),
-    array(
+    ],
+    [
         'eventname' => '\core\event\course_restored',
         'callback' => 'format_grid_observer::course_restored',
-    )
-);
+    ],
+];
diff --git a/db/upgrade.php b/db/upgrade.php
index 38d21838..14e5ed21 100644
--- a/db/upgrade.php
+++ b/db/upgrade.php
@@ -72,7 +72,7 @@ function xmldb_format_grid_upgrade($oldversion = 0) {
                     // Upgrade from old images.
                     $oldimages = $DB->get_records('format_grid_icon');
                     if (!empty($oldimages)) {
-                        $newimages = array();
+                        $newimages = [];
                         foreach ($oldimages as $oldimage) {
                             if (!empty($oldimage->image)) {
                                 try {
@@ -90,7 +90,7 @@ function xmldb_format_grid_upgrade($oldversion = 0) {
                                 // Contenthash later!
                                 $DB->insert_record('format_grid_image', $newimagecontainer, true);
                                 if (!array_key_exists($newimagecontainer->courseid, $newimages)) {
-                                    $newimages[$newimagecontainer->courseid] = array();
+                                    $newimages[$newimagecontainer->courseid] = [];
                                 }
                                 $newimages[$newimagecontainer->courseid][$newimagecontainer->sectionid] = $newimagecontainer;
                             }
@@ -133,7 +133,7 @@ function xmldb_format_grid_upgrade($oldversion = 0) {
                                                 }
                                                 if ($thefile !== false) {
                                                     $DB->set_field('format_grid_image', 'contenthash',
-                                                        $thefile->get_contenthash(), array('sectionid' => $filesectionid));
+                                                        $thefile->get_contenthash(), ['sectionid' => $filesectionid]);
                                                     // Don't delete the section file in case used in the summary.
                                                 }
                                             }
@@ -169,15 +169,15 @@ function xmldb_format_grid_upgrade($oldversion = 0) {
 
     if ($oldversion < 2022112605) {
         $records = $DB->get_records('course_format_options',
-            array(
+            [
                 'format' => 'grid',
-                'name' => 'numsections'
-            ), '', 'id'
+                'name' => 'numsections',
+            ], '', 'id'
         );
 
         $records = array_keys($records);
         foreach ($records as $id) {
-            $DB->set_field('course_format_options', 'name', 'gnumsections', array('id' => $id));
+            $DB->set_field('course_format_options', 'name', 'gnumsections', ['id' => $id]);
         }
 
         // Grid savepoint reached.
diff --git a/lib.php b/lib.php
index 19b1f214..caeb7e2e 100755
--- a/lib.php
+++ b/lib.php
@@ -169,7 +169,7 @@ public function page_title(): string {
      *     'sr' (int) used by multipage formats to specify to which section to return
      * @return null|moodle_url
      */
-    public function get_view_url($section, $options = array()) {
+    public function get_view_url($section, $options = []) {
         global $CFG;
         $course = $this->get_course();
         $url = new moodle_url('/course/view.php', ['id' => $course->id]);
@@ -312,162 +312,162 @@ public function course_format_options($foreditform = false) {
             } else { // Existing course that may not have 'numsections' - see get_last_section().
                 global $DB;
                 $defaultnumsections = $DB->get_field_sql('SELECT max(section) from {course_sections}
-                    WHERE course = ?', array($courseid));
+                    WHERE course = ?', [$courseid]);
             }
-            $courseformatoptions = array(
-                'gnumsections' => array(
+            $courseformatoptions = [
+                'gnumsections' => [
                     'default' => $defaultnumsections,
                     'type' => PARAM_INT,
-                ),
-                'hiddensections' => array(
+                ],
+                'hiddensections' => [
                     'default' => $courseconfig->hiddensections,
-                    'type' => PARAM_INT
-                ),
-                'popup' => array(
+                    'type' => PARAM_INT,
+                ],
+                'popup' => [
                     'default' => 0,
-                    'type' => PARAM_INT
-                ),
-                'imagecontainerwidth' => array(
+                    'type' => PARAM_INT,
+                ],
+                'imagecontainerwidth' => [
                     'default' => 0,
-                    'type' => PARAM_INT
-                ),
-                'imagecontainerratio' => array(
+                    'type' => PARAM_INT,
+                ],
+                'imagecontainerratio' => [
                     'default' => '-',
-                    'type' => PARAM_ALPHANUMEXT
-                ),
-                'imageresizemethod' => array(
+                    'type' => PARAM_ALPHANUMEXT,
+                ],
+                'imageresizemethod' => [
                     'default' => 0,
-                    'type' => PARAM_INT
-                ),
-                'showcompletion' => array(
+                    'type' => PARAM_INT,
+                ],
+                'showcompletion' => [
                     'default' => 0,
-                    'type' => PARAM_INT
-                ),
-                'singlepagesummaryimage' => array(
+                    'type' => PARAM_INT,
+                ],
+                'singlepagesummaryimage' => [
                     'default' => 0,
-                    'type' => PARAM_INT
-                )
-            );
+                    'type' => PARAM_INT,
+                ],
+            ];
         }
         if ($foreditform && !isset($courseformatoptions['gnumsections']['label'])) {
             if (is_null($courseconfig)) {
                 $courseconfig = get_config('moodlecourse');
             }
-            $sectionmenu = array();
+            $sectionmenu = [];
             for ($i = 0; $i <= $courseconfig->maxsections; $i++) {
                 $sectionmenu[$i] = "$i";
             }
-            $courseformatoptionsedit = array(
-                'gnumsections' => array(
+            $courseformatoptionsedit = [
+                'gnumsections' => [
                     'label' => new lang_string('numbersections', 'format_grid'),
                     'element_type' => 'select',
-                    'element_attributes' => array($sectionmenu),
-                ),
-                'hiddensections' => array(
+                    'element_attributes' => [$sectionmenu],
+                ],
+                'hiddensections' => [
                     'label' => new lang_string('hiddensections'),
                     'help' => 'hiddensections',
                     'help_component' => 'moodle',
                     'element_type' => 'select',
-                    'element_attributes' => array(
-                        array(
+                    'element_attributes' => [
+                        [
                             0 => new lang_string('hiddensectionscollapsed'),
-                            1 => new lang_string('hiddensectionsinvisible')
-                        )
-                    ),
-                )
-            );
+                            1 => new lang_string('hiddensectionsinvisible'),
+                        ],
+                    ],
+                ],
+            ];
 
             // TODO - Use capabilities?
             $popupvalues = $this->generate_default_entry(
                 'popup',
                 0,
-                array(
+                [
                     1 => new lang_string('no'),
-                    2 => new lang_string('yes')
-                )
+                    2 => new lang_string('yes'),
+                ],
             );
-            $courseformatoptionsedit['popup'] = array(
+            $courseformatoptionsedit['popup'] = [
                 'label' => new lang_string('popup', 'format_grid'),
                 'help' => 'popup',
                 'help_component' => 'format_grid',
                 'element_type' => 'select',
-                'element_attributes' => array($popupvalues)
-            );
+                'element_attributes' => [$popupvalues],
+            ];
 
             $imagecontainerwidthvalues = $this->generate_default_entry(
                 'imagecontainerwidth',
                 0,
                 \format_grid\toolbox::get_image_container_widths()
             );
-            $courseformatoptionsedit['imagecontainerwidth'] = array(
+            $courseformatoptionsedit['imagecontainerwidth'] = [
                 'label' => new lang_string('imagecontainerwidth', 'format_grid'),
                 'help' => 'imagecontainerwidth',
                 'help_component' => 'format_grid',
                 'element_type' => 'select',
-                'element_attributes' => array($imagecontainerwidthvalues)
-            );
+                'element_attributes' => [$imagecontainerwidthvalues],
+            ];
             $imagecontainerratiovalues = $this->generate_default_entry(
                 'imagecontainerratio',
                 '-',
                 \format_grid\toolbox::get_image_container_ratios()
             );
-            $courseformatoptionsedit['imagecontainerratio'] = array(
+            $courseformatoptionsedit['imagecontainerratio'] = [
                 'label' => new lang_string('imagecontainerratio', 'format_grid'),
                 'help' => 'imagecontainerratio',
                 'help_component' => 'format_grid',
                 'element_type' => 'select',
-                'element_attributes' => array($imagecontainerratiovalues)
-            );
+                'element_attributes' => [$imagecontainerratiovalues],
+            ];
 
             $imageresizemethodvalues = $this->generate_default_entry(
                 'imageresizemethod',
                 0,
-                array(
+                [
                     1 => new lang_string('scale', 'format_grid'), // Scale.
-                    2 => new lang_string('crop', 'format_grid')   // Crop.
-                )
+                    2 => new lang_string('crop', 'format_grid'),  // Crop.
+                ],
             );
-            $courseformatoptionsedit['imageresizemethod'] = array(
+            $courseformatoptionsedit['imageresizemethod'] = [
                 'label' => new lang_string('imageresizemethod', 'format_grid'),
                 'help' => 'imageresizemethod',
                 'help_component' => 'format_grid',
                 'element_type' => 'select',
-                'element_attributes' => array($imageresizemethodvalues)
-            );
+                'element_attributes' => [$imageresizemethodvalues],
+            ];
 
             $showcompletionvalues = $this->generate_default_entry(
                 'showcompletion',
                 0,
-                array(
+                [
                     1 => new lang_string('no'),
-                    2 => new lang_string('yes')
-                )
+                    2 => new lang_string('yes'),
+                ],
             );
-            $courseformatoptionsedit['showcompletion'] = array(
+            $courseformatoptionsedit['showcompletion'] = [
                 'label' => new lang_string('showcompletion', 'format_grid'),
                 'help' => 'showcompletion',
                 'help_component' => 'format_grid',
                 'element_type' => 'select',
-                'element_attributes' => array($showcompletionvalues)
-            );
+                'element_attributes' => [$showcompletionvalues],
+            ];
 
             $singlepagesummaryimagevalues = $this->generate_default_entry(
                 'singlepagesummaryimage',
                 0,
-                array(
+                [
                     1 => new lang_string('off', 'format_grid'),
                     2 => new lang_string('left', 'format_grid'),
                     3 => new lang_string('centre', 'format_grid'),
-                    4 => new lang_string('right', 'format_grid')
-                )
+                    4 => new lang_string('right', 'format_grid'),
+                ],
             );
-            $courseformatoptionsedit['singlepagesummaryimage'] = array(
+            $courseformatoptionsedit['singlepagesummaryimage'] = [
                 'label' => new lang_string('singlepagesummaryimage', 'format_grid'),
                 'element_type' => 'select',
-                'element_attributes' => array($singlepagesummaryimagevalues),
+                'element_attributes' => [$singlepagesummaryimagevalues],
                 'help' => 'singlepagesummaryimage',
-                'help_component' => 'format_grid'
-            );
+                'help_component' => 'format_grid',
+            ];
 
             $courseformatoptions = array_merge_recursive($courseformatoptions, $courseformatoptionsedit);
         }
@@ -485,7 +485,7 @@ public function course_format_options($foreditform = false) {
      */
     private function generate_default_entry($settingname, $defaultindex, $values) {
         $defaultvalue = get_config('format_grid', 'default'.$settingname);
-        $defarray = array($defaultindex => new lang_string('default', 'format_grid', $values[$defaultvalue]));
+        $defarray = [$defaultindex => new lang_string('default', 'format_grid', $values[$defaultvalue])];
 
         return array_replace($defarray, $values);
     }
@@ -561,7 +561,7 @@ public function update_course_format_options($data, $oldcourse = null) {
                             /* The previous format does not have the field 'numsections' and $data['gnumsections'] is not set,
                                we fill it with the maximum section number from the DB. */
                             $maxsection = $DB->get_field_sql('SELECT max(section) from {course_sections}
-                                WHERE course = ?', array($this->courseid));
+                                WHERE course = ?', [$this->courseid]);
                             if ($maxsection) {
                                 // If there are no sections, or just default 0-section, 'gnumsections' will be set to default.
                                 $data['gnumsections'] = $maxsection;
@@ -576,7 +576,7 @@ public function update_course_format_options($data, $oldcourse = null) {
         if ($changes && array_key_exists('gnumsections', $data)) {
             $numsections = (int)$data['gnumsections'];
             $maxsection = $DB->get_field_sql('SELECT max(section) from {course_sections}
-                WHERE course = ?', array($this->courseid));
+                WHERE course = ?', [$this->courseid]);
             if ($numsections < $maxsection) {
                 // The setting gnumsections has decreased, try to completely delete the orphaned sections (unless they are not empty).
                 for ($sectionnum = $maxsection; $sectionnum > $numsections; $sectionnum--) {
@@ -616,64 +616,64 @@ public function update_course_format_options($data, $oldcourse = null) {
     public function section_format_options($foreditform = false) {
         static $sectionformatoptions = false;
         if ($sectionformatoptions === false) {
-            $sectionformatoptions = array(
-                'sectionimage_filemanager' => array(
+            $sectionformatoptions = [
+                'sectionimage_filemanager' => [
                     'default' => '',
-                    'type' => PARAM_RAW
-                ),
-                'sectionimagealttext' => array(
+                    'type' => PARAM_RAW,
+                ],
+                'sectionimagealttext' => [
                     'default' => '',
-                    'type' => PARAM_TEXT
-                ),
-                'sectionbreak' => array(
+                    'type' => PARAM_TEXT,
+                ],
+                'sectionbreak' => [
                     'default' => 1, // No.
-                    'type' => PARAM_INT
-                ),
-                'sectionbreakheading' => array(
+                    'type' => PARAM_INT,
+                ],
+                'sectionbreakheading' => [
                     'default' => '',
-                    'type' => PARAM_RAW
-                )
-            );
+                    'type' => PARAM_RAW,
+                ],
+            ];
         }
         if ($foreditform && !isset($sectionformatoptions['sectionimage_filemanager']['label'])) {
-            $sectionformatoptionsedit = array(
-                'sectionimage_filemanager' => array(
+            $sectionformatoptionsedit = [
+                'sectionimage_filemanager' => [
                     'label' => new lang_string('sectionimage', 'format_grid'),
                     'help' => 'sectionimage',
                     'help_component' => 'format_grid',
                     'element_type' => 'sectionfilemanager',
-                    'element_attributes' => array(
-                        array(
+                    'element_attributes' => [
+                        [
                             'course' => $this->course,
-                            'sectionid' => optional_param('id', 0, PARAM_INT)
-                        )
-                    )
-                ),
-                'sectionimagealttext' => array(
+                            'sectionid' => optional_param('id', 0, PARAM_INT),
+                        ],
+                    ],
+                ],
+                'sectionimagealttext' => [
                     'label' => new lang_string('sectionimagealttext', 'format_grid'),
                     'help' => 'sectionimagealttext',
                     'help_component' => 'format_grid',
-                    'element_type' => 'text'
-                ),
-                'sectionbreak' => array(
+                    'element_type' => 'text',
+                ],
+                'sectionbreak' => [
                     'label' => new lang_string('sectionbreak', 'format_grid'),
                     'help' => 'sectionbreak',
                     'help_component' => 'format_grid',
                     'element_type' => 'select',
-                    'element_attributes' => array(
-                        array(
+                    'element_attributes' => [
+                        [
                             1 => new lang_string('no'),
-                            2 => new lang_string('yes')
-                        )
-                    ),
-                ),
-                'sectionbreakheading' => array(
+                            2 => new lang_string('yes'),
+                        ],
+                    ],
+                ],
+                'sectionbreakheading' => [
                     'label' => new lang_string('sectionbreakheading', 'format_grid'),
                     'help' => 'sectionbreakheading',
                     'help_component' => 'format_grid',
-                    'element_type' => 'textarea'
-                )
-            );
+                    'element_type' => 'textarea',
+                ],
+            ];
             $sectionformatoptions = array_merge_recursive($sectionformatoptions, $sectionformatoptionsedit);
         }
 
@@ -696,7 +696,7 @@ public function delete_section($section, $forcedeleteifnotempty = false) {
         }
         if (!is_object($section)) {
             global $DB;
-            $section = $DB->get_record('course_sections', array('course' => $this->get_courseid(), 'section' => $section),
+            $section = $DB->get_record('course_sections', ['course' => $this->get_courseid(), 'section' => $section],
                 'id,section,sequence,summary');
         }
         if (!$section || !$section->section) {
@@ -800,7 +800,7 @@ public function section_action($section, $action, $sr) {
      * @param int $numsections The number of sections.
      */
     public function restore_gnumsections($numsections) {
-        $data = array('gnumsections' => $numsections);
+        $data = ['gnumsections' => $numsections];
         $this->update_course_format_options($data);
     }
 
@@ -808,7 +808,7 @@ public function restore_gnumsections($numsections) {
      * A section has been added.  Should only be called from the state actions instance.
      */
     public function section_added() {
-        $data = array('gnumsections' => $this->settings['gnumsections'] + 1);
+        $data = ['gnumsections' => $this->settings['gnumsections'] + 1];
         $this->update_format_options($data);
     }
 
@@ -816,7 +816,7 @@ public function section_added() {
      * A section has been deleted.  Should only be called from the state actions instance.
      */
     public function section_deleted() {
-        $data = array('gnumsections' => $this->settings['gnumsections'] - 1);
+        $data = ['gnumsections' => $this->settings['gnumsections'] - 1];
         $this->update_format_options($data);
     }
 
@@ -856,7 +856,7 @@ public static function update_displayed_images_callback() {
  * @param array $options additional options affecting the file serving
  * @return bool
  */
-function format_grid_pluginfile($course, $birecordorcm, $context, $filearea, $args, $forcedownload, array $options=array()) {
+function format_grid_pluginfile($course, $birecordorcm, $context, $filearea, $args, $forcedownload, array $options=[]) {
     if ($context->contextlevel != CONTEXT_COURSE) {
         send_file_not_found();
     }
diff --git a/settings.php b/settings.php
index 9428307d..bc1ddfc3 100644
--- a/settings.php
+++ b/settings.php
@@ -67,10 +67,10 @@
     $title = get_string('defaultpopup', 'format_grid');
     $description = get_string('defaultpopup_desc', 'format_grid');
     $default = 1;
-    $choices = array(
+    $choices = [
         1 => new lang_string('no'),
-        2 => new lang_string('yes')
-    );
+        2 => new lang_string('yes'),
+    ];
     $page->add(new admin_setting_configselect($name, $title, $description, $default, $choices));
 
     // Icon width.
@@ -98,10 +98,10 @@
     $title = get_string('defaultimageresizemethod', 'format_grid');
     $description = get_string('defaultimageresizemethod_desc', 'format_grid');
     $default = 1; // Scale.
-    $choices = array(
+    $choices = [
         1 => new lang_string('scale', 'format_grid'),
-        2 => new lang_string('crop', 'format_grid')
-    );
+        2 => new lang_string('crop', 'format_grid'),
+    ];
     $setting = new admin_setting_configselect($name, $title, $description, $default, $choices);
     $setting->set_updatedcallback('format_grid::update_displayed_images_callback');
     $page->add($setting);
@@ -111,10 +111,10 @@
     $title = get_string('defaultdisplayedimagefiletype', 'format_grid');
     $description = get_string('defaultdisplayedimagefiletype_desc', 'format_grid');
     $default = 1; // Original.
-    $choices = array(
+    $choices = [
         1 => new lang_string('original', 'format_grid'),
-        2 => new lang_string('webp', 'format_grid')
-    );
+        2 => new lang_string('webp', 'format_grid'),
+    ];
     $setting = new admin_setting_configselect($name, $title, $description, $default, $choices);
     $setting->set_updatedcallback('format_grid::update_displayed_images_callback');
     $page->add($setting);
@@ -124,10 +124,10 @@
     $title = get_string('defaultshowcompletion', 'format_grid');
     $description = get_string('defaultshowcompletion_desc', 'format_grid');
     $default = 1;
-    $choices = array(
+    $choices = [
         1 => new lang_string('no'),
-        2 => new lang_string('yes')
-    );
+        2 => new lang_string('yes'),
+    ];
     $page->add(new admin_setting_configselect($name, $title, $description, $default, $choices));
 
     // Show the grid image in the section summary on a single page.
@@ -135,12 +135,12 @@
     $title = get_string('defaultsinglepagesummaryimage', 'format_grid');
     $description = get_string('defaultsinglepagesummaryimage_desc', 'format_grid');
     $default = 1;
-    $choices = array(
+    $choices = [
         1 => new lang_string('off', 'format_grid'),
         2 => new lang_string('left', 'format_grid'),
         3 => new lang_string('centre', 'format_grid'),
-        4 => new lang_string('right', 'format_grid')
-    );
+        4 => new lang_string('right', 'format_grid'),
+    ];
     $page->add(new admin_setting_configselect($name, $title, $description, $default, $choices));
 }
 $ADMIN->add('format_grid', $page);
diff --git a/version.php b/version.php
index 0fdf7d4a..225962bc 100644
--- a/version.php
+++ b/version.php
@@ -35,7 +35,7 @@
 $plugin->requires = 2022112800.00; // 4.1 (Build: 20221128).
 
 // Supported Moodle version.
-$plugin->supported = array(401, 401);
+$plugin->supported = [401, 401];
 
 // Full name of the plugin.
 $plugin->component = 'format_grid';