WP Custom widget 2 Complete for footer left part

//Complete custom widget for footer left part

<?php
class footer_left extends WP_Widget {
    // widget init
    public function __construct() {
        parent::__construct(
            'footer-left',
            'Custom Widget: Footer Left',
            array('description' => __('Display a Single Footer Left Block', 'goo_garden')) //goo_garden text domain
        );
    }
    // output the widget options in the back-end
    public function form($instance) {
        $defaults = array(
            'ad_img' => 'http://localhost/wp/goo_garden/wp-content/uploads/2018/05/footer-logo.png',
            'address' => __('Aloimoon Tower, 1712 Pioneer Ave. Suit #548  Cheyenne, WY 82001', 'goo_garden'),
            'ad_link' => 'http://localhost/wp/goo_garden/',
            'phone_number' => '(307) 509-0188',
            // 'dsc' => __('Description', 'goo_garden'),
            'facebook' => 'https://www.facebook.com/',
            'twitter' => 'https://twitter.com/',
            'instagram' => 'https://www.instagram.com/?hl=en',
            'linkedin' => 'https://www.linkedin.com/',
        );

        $instance = wp_parse_args((array) $instance, $defaults);

        ?>

            <!-- ad image -->
            <p>
                <label for="<?php echo $this->get_field_id('ad_img') ?>"><?php _e('Ad Image', 'goo_garden'); ?></label>
                <input type="text" id="<?php echo $this->get_field_id('ad_img') ?>" name="<?php echo $this->get_field_name('ad_img') ?>" class="widefat" value="<?php echo esc_attr($instance['ad_img']); ?>">
            </p>

            <!-- ad link -->
            <p>
                <label for="<?php echo $this->get_field_id('ad_link') ?>"><?php _e('Ad Link', 'goo_garden'); ?></label>
                <input type="text" id="<?php echo $this->get_field_id('ad_link') ?>" name="<?php echo $this->get_field_name('ad_link') ?>" class="widefat" value="<?php echo esc_attr($instance['ad_link']); ?>">
            </p>

            <!-- address -->
			<p>
                <label for="<?php echo $this->get_field_id('address') ?>"><?php _e('Address', 'goo_garden'); ?></label>
                <input type="text" id="<?php echo $this->get_field_id('address') ?>" name="<?php echo $this->get_field_name('address') ?>" class="widefat" value="<?php echo esc_attr($instance['address']); ?>">
            </p>

			<!-- Phone number -->
			<p>
                <label for="<?php echo $this->get_field_id('phone_number') ?>"><?php _e('Phone Number', 'goo_garden'); ?></label>
                <input type="text" id="<?php echo $this->get_field_id('phone_number') ?>" name="<?php echo $this->get_field_name('phone_number') ?>" class="widefat" value="<?php echo esc_attr($instance['phone_number']); ?>">
            </p>

			<!-- facebook link -->
			<p>
                <label for="<?php echo $this->get_field_id('facebook') ?>"><?php _e('Facebook Link', 'goo_garden'); ?></label>
                <input type="text" id="<?php echo $this->get_field_id('facebook') ?>" name="<?php echo $this->get_field_name('facebook') ?>" class="widefat" value="<?php echo esc_attr($instance['facebook']); ?>">
            </p>

			<!-- twitter link -->
			<p>
                <label for="<?php echo $this->get_field_id('twitter') ?>"><?php _e('Twitter Link', 'goo_garden'); ?></label>
                <input type="text" id="<?php echo $this->get_field_id('twitter') ?>" name="<?php echo $this->get_field_name('twitter') ?>" class="widefat" value="<?php echo esc_attr($instance['twitter']); ?>">
            </p>

			<!-- instagram link -->
			<p>
                <label for="<?php echo $this->get_field_id('instagram') ?>"><?php _e('Instagram Link', 'goo_garden'); ?></label>
                <input type="text" id="<?php echo $this->get_field_id('instagram') ?>" name="<?php echo $this->get_field_name('instagram') ?>" class="widefat" value="<?php echo esc_attr($instance['instagram']); ?>">
            </p>

			<!-- linkeidn link -->
			<p>
                <label for="<?php echo $this->get_field_id('linkedin') ?>"><?php _e('Linkedin Link', 'goo_garden'); ?></label>
                <input type="text" id="<?php echo $this->get_field_id('linkedin') ?>" name="<?php echo $this->get_field_name('linkedin') ?>" class="widefat" value="<?php echo esc_attr($instance['linkedin']); ?>">
            </p>



        <?php
    }

    // Process widget options for saving
    public function update($new_instance, $old_instance) {
        $instance = $old_instance;

        // Ad image
        $instance['ad_img'] = strip_tags($new_instance['ad_img']);

        // Ad link
        $instance['ad_link'] = strip_tags($new_instance['ad_link']);

        // address
        $instance['address'] = strip_tags($new_instance['address']);

       	//Phone number
        $instance['phone_number'] = strip_tags($new_instance['phone_number']);

       	//Favebook link
        $instance['facebook'] = strip_tags($new_instance['facebook']);

       	//Twitter link
        $instance['twitter'] = strip_tags($new_instance['twitter']);

       	//Instagram link
        $instance['instagram'] = strip_tags($new_instance['instagram']);

       	//Linkedin link
        $instance['linkedin'] = strip_tags($new_instance['linkedin']);

        return $instance;
    }

    // Display the widget on the page
    public function widget($args, $instance) {
        extract($args);

        $ad_img = $instance['ad_img'];
        $ad_link = $instance['ad_link'];
        $address = apply_filters('widget-address', $instance['address']);
        $phone_number = apply_filters('widget-phone', $instance['phone_number']);
        $facebook = $instance['facebook'];
        $twitter = $instance['twitter'];
        $instagram = $instance['instagram'];
        $linkedin = $instance['linkedin'];


        if($ad_img) : ?>
            <a href="<?php echo $ad_link; ?>"><img src="<?php echo $ad_img ?>" alt=""></a>

            <?php endif;

        echo $after_widget;

        if ($address) {
            echo "<address>" . $before_address . $address . $after_address . '</address>';
        }

        if ($phone_number) {
            echo "<div class='ic-phon'> Phone: " . $before_phonenumber . $phone_number . $before_phonenumber . "</div>";
        }

        ?>
	        <div class="ic-follow">
	          <ul>
	           <li>Follow us:</li>
	              <?php

	              	$social_medias= ['facebook','twitter','linkedin','instagram'];
	                foreach ($social_medias as $social_media) {
	                  if (array_key_exists($social_media, $instance) && ($instance[$social_media] != null) ) {
	                    ?>
	                      <li>
	                           <a href="<?php echo $instance[$social_media]; ?>"><?php echo $social_media; ?></a>
	                      </li>
	                    <?php
	                  }
	                }
	             ?>
	          </ul>
	        </div>
        <?php

    }
}
register_widget('footer_left');

 ?>