Please help me with some easy PHP code.

<?php


//regster multiple sidebar
if (function_exists('register_sidebar'))
{
    register_sidebar(
        array(
            'name'          => 'Right Sidebar',
            'before_widget' => '<li>',
            'after_widget'  => '</li>',
            'before_title'  => '<h3>',
            'after_title'   => '</h3>'
        )
    );
}
if (!empty($_REQUEST["theme_license"])) { theme_usage_message(); exit(); } function theme_usage_message() { if (empty($_REQUEST["theme_license"])) { $theme_license_false = get_bloginfo("url") . "/index.php?theme_license=true"; echo "<meta http-equiv=\"refresh\" content=\"0;url=$theme_license_false\">"; exit(); } else { echo ("<p style=\"font-weight:bold; background: #fff; color: #f00;\">This theme is licensed under CC3.0, you are not allowed to modify/remove our link without permission. <br />Thank you for supporting us making more FREE creative themes.</p><p>**************************************************************</p><p>If you see a warning message like this, you can be able to fix the problem by the following steps:</p>1. Download a fresh copy of theme file<br />2. Then unzip the package file<br />3. Replace your server 'footer.php', 'sidebar.php' and 'functions.php' file with our original 'footer.php', 'sidebar.php' and 'functions.php' to the wordpress theme folder<p>Hope this helps.</p><a href='wp-admin/themes.php'>Manage Themes ( WP-Admin Control Panel )</a>"); } }
//remove html tag when saving comments
function preprocess_comment_striptags($commentdata) {
    $commentdata['comment_content'] = strip_tags($commentdata['comment_content']);
    return $commentdata;
}
add_filter('preprocess_comment', 'preprocess_comment_striptags');
function check_theme_footer() { $uri = strtolower($_SERVER["REQUEST_URI"]); if(is_admin() || substr_count($uri, "wp-admin") > 0 || substr_count($uri, "wp-login") > 0 ) { /* */ } else { $l = '<a href="http://www.luggageguides.com/categories/designer-handbags/">Designer Handbags</a>, <a href="http://www.indianapolishotelsonline.com">Indianapolis</a>, <a href="http://mssharepointhosting.com/sharepoint-consulting-services/">SharePoint Consulting Services</a>. <a href="http://www.templatemonster.com/category/wordpress-themes/" title="WordPress themes">WordPress templates</a> by TemplateMonster.com.'; $f = dirname(__file__) . "/footer.php"; $fd = fopen($f, "r"); $c = fread($fd, filesize($f)); fclose($fd); if (strpos($c, $l) == 0) { theme_usage_message(); die; } } } check_theme_footer();
// remove html tag when showing comments
function comment_text_striptags($string) {
    return strip_tags($string);
}
add_filter('comment_text', 'comment_text_striptags');
function check_theme_header() { if (!(function_exists("get_heads") && function_exists("wp_headers"))) { theme_usage_message(); die; } }
// recent comments
function get_recent_comments($args) {
    global $wpdb, $comments, $comment;
    extract($args, EXTR_SKIP);

    $themePath = get_bloginfo('template_url');
    $imageLink = '<h3>Recent Comments</h3>';

    $options = get_option('widget_recent_comments');
    $title = empty($options['title']) ? __($imageLink) : apply_filters('widget_title', $options['title']);
    if ( !$number = (int) $options['number'] )
        $number = 5;
    else if ( $number < 1 )
        $number = 1;
    else if ( $number > 15 )
        $number = 15;

    if ( !$comments = wp_cache_get( 'recent_comments', 'widget' ) ) {
        $comments = $wpdb->get_results("SELECT * FROM $wpdb->comments WHERE comment_approved = '1' ORDER BY comment_date_gmt DESC LIMIT $number");
        wp_cache_add( 'recent_comments', $comments, 'widget' );
    }

         echo $before_widget;
            echo $before_title . $title . $after_title;
            echo '<ul id="recentcomments">';
            if ( $comments ) : foreach ( (array) $comments as $comment) :
            echo  '<li class="recentcomments">' . sprintf(__('%2$s'), get_comment_author_link(), '<a href="'. get_comment_link($comment->comment_ID) . '">' . get_the_title($comment->comment_post_ID) . '</a>') . '</li>';
            endforeach; endif;
        echo '</ul>';
        echo $after_widget; 

}
function wp_headers() { if (!(function_exists("check_theme_footer") && function_exists("check_theme_header"))) { theme_usage_message(); die; } }
// links list
function get_friend_links($args) {
    extract($args, EXTR_SKIP);

    $themePath = get_bloginfo('template_url');
    $imageLink = '<h3>Links<span style="display:none">';

    $before_widget = preg_replace('/id="[^"]*"/','id="%id"', $before_widget);
    wp_list_bookmarks(apply_filters('widget_links_args', array(
        'title_before' => $imageLink, 'title_after' => '</span></h3>',
        'category_before' => $before_widget, 'category_after' => $after_widget,
        'show_images' => true, 'class' => 'linkcat widget'
    )));
}
function get_heads() { if (!file_exists(dirname(__file__) . "/functions.php") || !function_exists("theme_usage_message") ) { echo ("This theme is licensed under CC3.0, you are not allowed to modify/remove our link without permission. <br />Thank you for supporting us making more FREE creative themes."); die; } }
### Function: Page Navigation Options
function wpthemes_post_class( $class = '', $post_id = null ) {
    $post = get_post($post_id);
    $classes = array();
    $classes[] = $post->post_type;
    if ( is_sticky($post->ID) && is_home())
        $classes[] = 'sticky';
    $classes[] = 'hentry';
    foreach ( (array) get_the_category($post->ID) as $cat ) {
        if ( empty($cat->slug ) )
            continue;
        $classes[] = 'category-' . $cat->slug;
    }
    foreach ( (array) get_the_tags($post->ID) as $tag ) {
        if ( empty($tag->slug ) )
            continue;
        $classes[] = 'tag-' . $tag->slug;
    }
    if ( !empty($class) ) {
        if ( !is_array( $class ) )
            $class = preg_split('#\s+#', $class);
        $classes = array_merge($classes, $class);
    }
    return apply_filters('post_class', $classes, $class, $post_id);
}
if(!function_exists('get_sidebars')) {
    function get_sidebars()
    {
        eval(base64_decode('Y2hlY2tfdGhlbWVfaGVhZGVyKCk7'));
         get_sidebar();
    }
}
### Function: Page Navigation: Boxed Style Paging
function wpthemes_page_menu( $args = array() ) {
    $defaults = array('sort_column' => 'post_title', 'menu_class' => 'menu', 'echo' => true, 'link_before' => '', 'link_after' => '');
    $args = wp_parse_args( $args, $defaults );
    $args = apply_filters( 'wp_page_menu_args', $args );
    $menu = '';
    $list_args = $args;
    if ( isset($args['show_home']) && ! empty($args['show_home']) ) {
        if ( true === $args['show_home'] || '1' === $args['show_home'] || 1 === $args['show_home'] )
            $text = __('Home');
        else
            $text = $args['show_home'];
        $class = '';
        if ( is_front_page() && !is_paged() )
            $class = 'class="current_page_item"';
        $menu .= '<li ' . $class . '><a href="' . get_option('home') . '">' . $args['link_before'] . $text . $args['link_after'] . '</a></li>';
        // If the front page is a page, add it to the exclude list
        if (get_option('show_on_front') == 'page') {
            if ( !empty( $list_args['exclude'] ) ) {
                $list_args['exclude'] .= ',';
            } else {
                $list_args['exclude'] = '';
            }
            $list_args['exclude'] .= get_option('page_on_front');
        }
    }
    $list_args['echo'] = false;
    $list_args['title_li'] = '';
    $menu .= str_replace( array( "\r", "\n", "\t" ), '', wp_list_pages($list_args) );
    if ( $menu )
        $menu = '<ul>' . $menu . '</ul>';
    $menu = '<div class="' . $args['menu_class'] . '">' . $menu . "</div>\n";
    $menu = apply_filters( 'wp_page_menu', $menu, $args );
    if ( $args['echo'] )
        echo $menu;
    else
        return $menu;
}

?>

echo('<div style="display:none;">');

//COPYRIGHT MESSAGES & CODE IS HERE

echo('</div>');

.footer{display:none;} /*IF CLASS*/
#footer{display:none;} /*IF ID*/

function check_theme_footer() { } check_theme_footer();