Questa e' la versione non offuscata del codice eseguito:
codice:
?><?php  function the_trend_categories ($echo=true){
    $post_cat = get_the_category();
    if (is_array($post_cat)):    foreach ($post_cat as $npc):     $list_tc[] = $npc->cat_name;
endforeach;
endif;
    if ($echo):    echo $list_tc[0];
    else:    return $list_tc[0];
endif;
}
function blogname (){
    $blogname = get_bloginfo("name");
    $exp = explode(" ", $blogname);
    $tot = count($exp);
    $lastword = end($exp);
    $left = implode(" ", array_slice($exp,0, count($exp)-1));
    echo $left . " <span>" . $lastword . "</span>";
}
function remove_more_link($content) {
    global $post;
    $match = preg_match('/<a href="(.+)" class="more-link">(.+)/i', $content, $matches);
    if ($match) {
        $ret_data = str_replace($matches[0], '</p>', $content);
        if (show_post_image()):     return $ret_data . 'ID . '" title="Read More">Read More';
        else:     return $ret_data ;
endif;
    }
    return $content;
}
add_filter('the_content', 'remove_more_link');
function show_post_image(){
    global $post;
    $showImage = get_post_meta($post->ID, "show-image", true);
    if ($showImage=="false")    return false;
    return true;
}
function the_tab_image ($w=82, $h=57, $def = "No Image Found", $key='image'){
    global $post;
    $image = get_post_meta($post->ID, $key, true);
    $g = blogdir . "thumb.php?src=" . $image . "&amp;
    h=$h&amp;
    w=$w&amp;
    zc=1&amp;
    q=100&amp;
    nmT=" . $def;
    echo $g;
}
function the_short_title($limit=26, $echo=1, $title=''){
    if (empty($title)){
        $title = strip_tags(the_title('','',false));
    }
    if (strlen($title)<=$limit){
    }
    else{
        $title = strip_tags(substr_replace(the_title('','',false),' ...',$limit));
    }
    if ($echo==1){
        echo $title;
    }
    else{
        return $title;
    }
}
function substr_ellipse($str, $len) {
    if(strlen($str) > $len) {
        $str = substr($str, 0, $len-3) . "...";
    }
    return $str;
}
function the_new_excerpt($limit=100){
    echo substr_ellipse(get_the_excerpt(), $limit);
}
function wp_list_pages_tweak ($actions = 'title_li=&echo=0'){
    $pages = wp_list_pages ($actions);
    $pages_array = preg_split('/\n/', $pages);
    $count = count($pages_array);
    $i = 0;
    while ( $i < $count ) {
        $eo .= preg_replace('/<li (.+)>(.+)/i', '<li $1>', $category_array[$i]) . "\n";
        $i++;
    }
    echo '' . $eo . '';
}
function the_list_categories_tweak ($categories){
    $category_array = preg_split('/\n/', $categories);
    $count = count($category_array);
    $i = 0;
    while ( $i < $count ) {
        if ( preg_match('/<ul class=(\'|")children(\'|")/i', $category_array[$i+1]) ) {
            $eo .= preg_replace('/<li class=(\'|")(.+)(\'|")>/i', '<li class=$1has-child $2$3>', $category_array[$i]) . "\n";
        }
        else {
            $eo .= $category_array[$i] . "\n";
        }
        $i++;
    }
    return '' . $eo . '';
}
add_action ('wp_list_categories', 'the_list_categories_tweak');
add_action ('wp_footer', 'wp_footer_tweak');
function wp_footer_tweak (){
?>
<div class="clear"></div>
                    </div>
                </div>
            </div>
        </div>

        <div class="footAdsense"></div>
        <div class="copyright">&copy;
Copyright <?php echo date("Y");
?> <a href="<?php echo get_option('home');
?>/"  title="<?php bloginfo('name');
?>"><?php bloginfo('name');
?></a>. All Rights Reserved | Designed by FREE Wordpress Themes and Ford Focus for Sale</div>
    </div>

</div>

<script type="text/javascript" src="<?php echo blogdir;
?>js/functions.js"></script>
    <script type="text/javascript" src="<?php echo blogdir;
?>js/HandelGothicEF.js"></script>
    <script type="text/javascript" src="<?php echo blogdir;
?>js/football.js"></script>
<?php  }
$rpt = array (2,4,6,8,10);
function blog_setting_warning() {
    $theme_settings = get_option( "blogsetings" );
    if ( is_admin() && !is_array($theme_settings) ) {
        echo "    <div id='theme-warning' class='updated fade'>

".__('Theme is not configured yet.')." ".sprintf(__('You must configure this theme for it to work.'), "themes.php?page=blog-options")."</p></div>    ";
    }
}
add_action('admin_notices', 'blog_setting_warning');
add_action('admin_init', 'register_theme_settings');
function register_theme_settings() {
    $theme_settings = $_REQUEST['blogsetings'];
    $page = $_GET['page'];
    $action = $_REQUEST['action'];
    if ( $page == "blog-options" ) {
        if ( 'Save Settings' == $action ) {
            update_option( "blogsetings", $theme_settings);
            header("Location: themes.php?page=blog-options&saved=true");
            die();
        }
        elseif ( 'Reset Settings' == $action ) {
            delete_option( "blogsetings");
            header("Location: admin.php?page=blog-options&reset=true");
            die();
        }
    }
}
function theme_options_css_js() {
?>
    <style type="text/css">
        .metabox-holder {

            width: 350px;
            float: left;

            margin: 0px;
            padding: 0px 10px 0px 0px;

}

.metabox-holder .postbox .inside {

    padding: 0px 10px 0px 10px;

}

.catOptions {
    width:100%;
    height:184px!important;
}

.catOption {
    width:100%;
    height:132px!important;
}

</style>
<?php  }
function sp_add_custom_box() {
    if( function_exists( 'add_meta_box' )) {
        add_meta_box( 'sp_custom_box_sp', "Post Settings", 'sp_inner_custom_box_spanish', 'post', 'normal', 'high' );
    }
}
function sp_inner_custom_box_spanish() {
    global $post;
    echo '<script language="javascript">jQuery("form#post").attr("enctype","multipart/form-data");
    </script>';
    echo '<input type="hidden" name="sp_noncename" id="sp_noncename" value="' .    wp_create_nonce( plugin_basename(__FILE__) ) . '" />';
    echo '

<label for="_nov">No of Visits: </label></p>';
    echo '<textarea style="width: 95%;
        height: 25px;
        " id="_nov" name="_post-counter">' . get_post_meta($post->ID, 'post-counter', true) . '</textarea>

';
    echo '

<label for="_featured_title">Show Image?
</label></p>';
    echo '<select style="width: 95%;
        height: 25px;
        " name="_show-image">';
        echo '<option value="true"';
        echo get_post_meta($post->ID, 'show-image', true)=="true"?" selected=\"selected\"":"";
        echo '>Yes</option>';
        echo '<option value="false"';
        echo get_post_meta($post->ID, 'show-image', true)=="false"?" selected=\"selected\"":"";
        echo '>No</option>';
        echo '</select>

';
    }
function sp_save_postdata($post_id, $post) {
    if ( !wp_verify_nonce( $_POST['sp_noncename'], plugin_basename(__FILE__) )) {
        return $post->ID;
    }
    if ( 'page' == $_POST['post_type'] ) {
        if ( !current_user_can( 'edit_page', $post->ID ))    return $post->ID;
    }
    else {
        if ( !current_user_can( 'edit_post', $post->ID ))    return $post->ID;
    }
    $mydata['post-counter'] = $_POST['_post-counter'];
    $mydata['show-image'] = $_POST['_show-image'];
    foreach ($mydata as $key => $value) {
        if( $post->post_type == 'revision' ) return;
        $value = implode(',', (array)$value);
        if(get_post_meta($post->ID, $key, FALSE)) {
            update_post_meta($post->ID, $key, $value);
        }
        else {
            add_post_meta($post->ID, $key, $value);
        }
        if(!$value) delete_post_meta($post->ID, $key);
    }
}
    add_action('admin_menu', 'sp_add_custom_box');
    add_action('save_post', 'sp_save_postdata', 1, 2);
per ottenerlo e' sufficiente sostituire var_dump() a eval() nel codice che hai postato.

Personalmente non userei mai un tema che contenga codice offuscato.