Multiple Checkbox Widget

 <?php
        error_reporting('E_ALL');
        /**
         * Created by PhpStorm.
         * User: User
         * Date: 12/4/13
         * Time: 5:08 PM
         */
        // Creating the widget
        class wplinkedinFullProfileResumeWidget extends WP_Widget {

            public function __construct() {
                add_action( 'widgets_init', array($this,'wplnFullResume_load_widget' ));
                parent::__construct(
                // Base ID of your widget
                    'wplinkedinFullProfileResumeWidget',

                    // Widget name will appear in UI
                    __('Linkedin Full Profile Info Display', 'wplnFullResume_widget_domain'),

                    // Widget description
                    array( 'description' => __( 'Linkedin Full Profile Info Display in Widget', 'wplnFullResume_widget_domain' ), )
                );
            }

            // Register and load the widget
            public function wplnFullResume_load_widget() {
                register_widget( 'wplinkedinFullProfileResumeWidget' );
            }

            // Creating widget front-end
             //This is where the action happens
            public function widget( $args, $instance ) {
                $title = apply_filters( 'widget_title', $instance['title'] );
                $infotype = $instance['checktype'];
                var_dump($infotype);
                // before and after widget arguments are defined by themes
                echo $args['before_widget'];
                if ( ! empty( $title ) )
                    echo $args['before_title'] . $title . $args['after_title'];

                // This is where you run the code and display the output

                $className = 'linkedinUserDataRendersimple';
                $render_str = 'render_'.$infotype;

                require_once(plugin_dir_path(__DIR__).'/templates/simple.php');

                $wplinkedinUserDataRender = new $className();

                $html = '<div class="cblinkedinwrapper simple">';
                if (method_exists($wplinkedinUserDataRender, $render_str)){
                    $rendered_data = call_user_func(array($wplinkedinUserDataRender, $render_str));
                    $html .= $rendered_data;
                    $html .= '<div class="clear"></div>';
                }
                $html .= '</div>';
                echo $rendered_data;
                echo $args['after_widget'];
            }

            // Widget Backend
            function form($instance) {
                $wplinkedinSortableItem = (array)get_option('wplinkedinresume');
                //var_dump($wplinkedinSortableItem['linkedinSortableItem']);
                $sortable_item  = array(
                    'about'             => 'About Me',
                    'summary'           => 'Summary',
                    'experience'        => 'Experience',
                    'education'         => 'Education',
                    'skills'            => 'Skills',
                    'publications'      => 'Publications',
                    'volunteer'         => 'Volunteer & Causes',
                    'recommendations'   => 'Recommendations',
                    'language'          => 'Languages',
                    'certifications'    => 'Certifications',
                    'linkedinStatus'    => 'Publish Recent Status'
                );

                $defaults = array( 'title' => 'Linkedin Profile', 'checktype' => array() );
                $instance = wp_parse_args( (array) $instance, $defaults );

                $title = $instance['title'];
                $checktype = $instance['checktype'];

                var_dump($checktype);

                $output = '<p>Title:  <input class="widefat" name="'.$this->get_field_name( 'title' ).'" type="text" value="'.esc_attr( $title ).'"/>';
                $output .= '<p class="paragraph_div">';
                foreach($wplinkedinSortableItem['linkedinSortableItem'] as $sortKey => $sortVal){
                    $output .= '<label for="'. $this->get_field_id('checktype').$sortKey .'"> '. $sortable_item[$sortKey] .' </label>';
                    $output .= '<input class="checktype_checkbox" type="checkbox" id="'.$this->get_field_id('checktype').$sortKey .'" name="checktype['.$sortKey.']" value="1"';
                    $output .= checked(1, $checktype[$sortKey]);var_dump($checktype[$sortKey]);
                    //$output .= ($checktype[$sortKey] == 1) ? 'checked="checked"' : '';
                    $output .= ' /><br>';

                }
                $output .= '</ul>';
                $output .= '</p>';
                echo $output;
                echo '<style type="text/css">.checktype_checkbox{float:right;} .paragraph_div{width:150px;}</style>';
            }

            // Updating widget replacing old instances with new
            public function update($new_instance, $old_instance) {
                //var_dump($new_instance);
                $instance = $old_instance;
                $instance['title']      = strip_tags( $new_instance['title'] );
                $instance['checktype']  =  $new_instance['checktype'] ;
//                for($i=0; $i<sizeof($instance['checktype']); $i++) {
//                    $instance['checktype'][$i]['selected'] = (int)$new_instance['checktype'][$i]['selected'];
//              }
                return $instance;
            }
        } // Class wpb_widget ends here