I have a script to process submit, How to recode it (my meand is shorter)

gistfile1.aw

/* facebook */

    if( isset($_POST['facebook_create_item_wpnonce']) ){
        if( wp_verify_nonce($_POST['facebook_create_item_wpnonce'], 'facebook_create_item') ){
            $twitter_user = isset( $_POST['facebook_user'] ) ? $_POST['facebook_user'] : '';
            if( $twitter_user ){

                $wall_social_feed_options['facebook'][$twitter_user] = array(
                    'category' => 1,
                    'limit' => 20,
                    'use_image' => 0
                );
                update_option('wall_social_feed_options', $wall_social_feed_options);
            }
        }
    }

    if( isset($_POST['remove_facebook_item_nonce']) ){
        if( wp_verify_nonce($_POST['remove_facebook_item_nonce'], 'remove_facebook_item') ){
            if( isset( $_POST['facebook_item_remove'] ) ){

                $item_remove = $_POST['facebook_item_remove'];
                unset ( $wall_social_feed_options['facebook'][ $item_remove ] );
                update_option('wall_social_feed_options',$wall_social_feed_options);
            }
        }
    }
    
    if( isset( $_POST['facebook_item_update_nonce'] ) ){
        if( wp_verify_nonce( $_POST['facebook_item_update_nonce'], 'facebook_item_update') ){
            $twitter_item_id = isset( $_POST['facebook_item_id'] ) ? $_POST['facebook_item_id'] : '';
            $twitter_item_category = isset( $_POST['facebook_item_category']) ? $_POST['facebook_item_category'] : 1;
            $twitter_item_limit = isset( $_POST['facebook_item_limit'] ) ? $_POST['facebook_item_limit'] : 20;
            $twitter_item_useimage = isset( $_POST['facebook_item_useimage']) ? $_POST['facebook_item_useimage'] : 0;

            if( !$twitter_item_id ) return false;

            $wall_social_feed_options['facebook'][$twitter_item_id] = array(
                'category' => $twitter_item_category,
                'limit' => $twitter_item_limit,
                'use_image' => $twitter_item_useimage
            );
            update_option('wall_social_feed_options', $wall_social_feed_options);
        }
    }

    /* Twitter */
    if( isset($_POST['twitter_create_item_wpnonce']) ){
        if( wp_verify_nonce($_POST['twitter_create_item_wpnonce'], 'twitter_create_item') ){
            $twitter_user = isset( $_POST['twitter_user'] ) ? $_POST['twitter_user'] : '';
            if( $twitter_user ){

                $wall_social_feed_options['twitter'][$twitter_user] = array(
                    'category' => 1,
                    'limit' => 20,
                    'use_image' => 0
                );
                update_option('wall_social_feed_options', $wall_social_feed_options);
            }
        }
    }

    if( isset($_POST['remove_twitter_item_nonce']) ){
        if( wp_verify_nonce($_POST['remove_twitter_item_nonce'], 'remove_twitter_item') ){
            if( isset( $_POST['twitter_item_remove'] ) ){

                $item_remove = $_POST['twitter_item_remove'];
                unset ( $wall_social_feed_options['twitter'][ $item_remove ] );
                update_option('wall_social_feed_options',$wall_social_feed_options);
            }
        }
    }
    
    if( isset( $_POST['twitter_item_update_nonce'] ) ){
        if( wp_verify_nonce( $_POST['twitter_item_update_nonce'], 'twitter_item_update') ){
            $twitter_item_id = isset( $_POST['twitter_item_id'] ) ? $_POST['twitter_item_id'] : '';
            $twitter_item_category = isset( $_POST['twitter_item_category']) ? $_POST['twitter_item_category'] : 1;
            $twitter_item_limit = isset( $_POST['twitter_item_limit'] ) ? $_POST['twitter_item_limit'] : 20;
            $twitter_item_useimage = isset( $_POST['twitter_item_useimage']) ? $_POST['twitter_item_useimage'] : 0;

            if( !$twitter_item_id ) return false;

            $wall_social_feed_options['twitter'][$twitter_item_id] = array(
                'category' => $twitter_item_category,
                'limit' => $twitter_item_limit,
                'use_image' => $twitter_item_useimage
            );
            update_option('wall_social_feed_options', $wall_social_feed_options);
        }
    }

    /*Youtubbe*/

    if( isset($_POST['youtube_create_item_wpnonce']) ){
        if( wp_verify_nonce($_POST['youtube_create_item_wpnonce'], 'youtube_create_item') ){
            $twitter_user = isset( $_POST['youtube_user'] ) ? $_POST['youtube_user'] : '';
            if( $twitter_user ){

                $wall_social_feed_options['youtube'][$twitter_user] = array(
                    'category' => 1,
                    'limit' => 20,
                    'use_image' => 1
                );
                update_option('wall_social_feed_options', $wall_social_feed_options);
            }
        }
    }

    if( isset($_POST['remove_youtube_item_nonce']) ){
        if( wp_verify_nonce($_POST['remove_youtube_item_nonce'], 'remove_youtube_item') ){
            if( isset( $_POST['youtube_item_remove'] ) ){

                $item_remove = $_POST['youtube_item_remove'];
                unset ( $wall_social_feed_options['youtube'][ $item_remove ] );
                update_option('wall_social_feed_options',$wall_social_feed_options);
            }
        }
    }
    
    if( isset( $_POST['youtube_item_update_nonce'] ) ){
        if( wp_verify_nonce( $_POST['youtube_item_update_nonce'], 'youtube_item_update') ){
            $twitter_item_id = isset( $_POST['youtube_item_id'] ) ? $_POST['youtube_item_id'] : '';
            $twitter_item_category = isset( $_POST['youtube_item_category']) ? $_POST['youtube_item_category'] : 1;
            $twitter_item_limit = isset( $_POST['youtube_item_limit'] ) ? $_POST['youtube_item_limit'] : 20;
            $twitter_item_useimage = isset( $_POST['youtube_item_useimage']) ? $_POST['youtube_item_useimage'] : 0;

            if( !$twitter_item_id ) return false;

            $wall_social_feed_options['youtube'][$twitter_item_id] = array(
                'category' => $twitter_item_category,
                'limit' => $twitter_item_limit,
                'use_image' => $twitter_item_useimage
            );
            update_option('wall_social_feed_options', $wall_social_feed_options);
        }
    }

    /*Instagram*/

    if( isset($_POST['instagram_create_item_wpnonce']) ){
        if( wp_verify_nonce($_POST['instagram_create_item_wpnonce'], 'instagram_create_item') ){
            $twitter_user = isset( $_POST['instagram_user'] ) ? $_POST['instagram_user'] : '';
            if( $twitter_user ){

                $wall_social_feed_options['instagram'][$twitter_user] = array(
                    'category' => 1,
                    'limit' => 20,
                    'use_image' => 1
                );
                update_option('wall_social_feed_options', $wall_social_feed_options);
            }
        }
    }

    if( isset($_POST['remove_instagram_item_nonce']) ){
        if( wp_verify_nonce($_POST['remove_instagram_item_nonce'], 'remove_instagram_item') ){
            if( isset( $_POST['instagram_item_remove'] ) ){

                $item_remove = $_POST['instagram_item_remove'];
                unset ( $wall_social_feed_options['instagram'][ $item_remove ] );
                update_option('wall_social_feed_options',$wall_social_feed_options);
            }
        }
    }
    
    if( isset( $_POST['instagram_item_update_nonce'] ) ){
        if( wp_verify_nonce( $_POST['instagram_item_update_nonce'], 'instagram_item_update') ){
            $twitter_item_id = isset( $_POST['instagram_item_id'] ) ? $_POST['instagram_item_id'] : '';
            $twitter_item_category = isset( $_POST['instagram_item_category']) ? $_POST['instagram_item_category'] : 1;
            $twitter_item_limit = isset( $_POST['instagram_item_limit'] ) ? $_POST['instagram_item_limit'] : 20;
            $twitter_item_useimage = isset( $_POST['instagram_item_useimage']) ? $_POST['instagram_item_useimage'] : 0;

            if( !$twitter_item_id ) return false;

            $wall_social_feed_options['instagram'][$twitter_item_id] = array(
                'category' => $twitter_item_category,
                'limit' => $twitter_item_limit,
                'use_image' => $twitter_item_useimage
            );
            update_option('wall_social_feed_options', $wall_social_feed_options);
        }
    }
    /*Flickr*/

    if( isset($_POST['flickr_create_item_wpnonce']) ){
        if( wp_verify_nonce($_POST['flickr_create_item_wpnonce'], 'flickr_create_item') ){
            $twitter_user = isset( $_POST['flickr_user'] ) ? $_POST['flickr_user'] : '';
            if( $twitter_user ){

                $wall_social_feed_options['flickr'][$twitter_user] = array(
                    'category' => 1,
                    'limit' => 20,
                    'use_image' => 1
                );
                update_option('wall_social_feed_options', $wall_social_feed_options);
            }
        }
    }

    if( isset($_POST['remove_flickr_item_nonce']) ){
        if( wp_verify_nonce($_POST['remove_flickr_item_nonce'], 'remove_flickr_item') ){
            if( isset( $_POST['flickr_item_remove'] ) ){

                $item_remove = $_POST['flickr_item_remove'];
                unset ( $wall_social_feed_options['flickr'][ $item_remove ] );
                update_option('wall_social_feed_options',$wall_social_feed_options);
            }
        }
    }
    
    if( isset( $_POST['flickr_item_update_nonce'] ) ){
        if( wp_verify_nonce( $_POST['flickr_item_update_nonce'], 'flickr_item_update') ){
            $twitter_item_id = isset( $_POST['flickr_item_id'] ) ? $_POST['flickr_item_id'] : '';
            $twitter_item_category = isset( $_POST['flickr_item_category']) ? $_POST['flickr_item_category'] : 1;
            $twitter_item_limit = isset( $_POST['flickr_item_limit'] ) ? $_POST['flickr_item_limit'] : 20;
            $twitter_item_useimage = isset( $_POST['flickr_item_useimage']) ? $_POST['flickr_item_useimage'] : 0;

            if( !$twitter_item_id ) return false;

            $wall_social_feed_options['flickr'][$twitter_item_id] = array(
                'category' => $twitter_item_category,
                'limit' => $twitter_item_limit,
                'use_image' => $twitter_item_useimage
            );
            update_option('wall_social_feed_options', $wall_social_feed_options);
        }
    }