protected function display_category_form($contexts, $pageurl, $current) {
        echo \html_writer::start_div('choosecategory');
        $catmenu = question_category_options($contexts, true, 0, true);
        echo \html_writer::label(get_string('selectacategory', 'question'), 'id_selectacategory');
        echo \html_writer::select($catmenu, 'category', $current, array(),
                array('class' => 'searchoptions custom-select', 'id' => 'id_selectacategory'));
        echo \html_writer::end_div() . "\n";
    }
protected function display_category_form($contexts, $pageurl, $current) {
        echo \html_writer::start_div('choosecategory');
        $catmenu = question_category_options($contexts, true, 0, true);
        echo \html_writer::label(get_string('selectacategory', 'question'), 'id_selectacategory');
        echo \html_writer::select($catmenu, 'category', $current, array(),
                array('class' => 'searchoptions custom-select', 'id' => 'id_selectacategory'));
        echo \html_writer::end_div() . "\n";
    }
protected function display_category_form ( $ contexts , $ pageurl , $ current ) { echo \ html_writer :: start_div ( 'choosecategory' ) ; $ catmenu = question_category_options ( $ contexts , true , 0 , true ) ; echo \ html_writer :: label ( get_string ( 'selectacategory' , 'question' ) , 'id_selectacategory' ) ; echo \ html_writer :: select ( $ catmenu , 'category' , $ current , array ( ) , array ( 'class' => 'searchoptions custom-select' , 'id' => 'id_selectacategory' ) ) ; echo \ html_writer :: end_div ( ) . "\n" ; }
Display the drop down to select the category.

@param array $contexts of contexts that can be accessed from here.
@param \moodle_url $pageurl the URL of this page.
@param string $current 'categoryID,contextID'.
Display the drop down to select the category .