不用插件的pagenavi

在function.php文件加上以下代码：

//分页导航  
function par_pagenavi($range = 9){
    global $paged, $wp_query;
    $max_page = $wp_query->max_num_pages;
    if($max_page > 1){if(!$paged){$paged = 1;}
    echo "共".$max_page."页";
    previous_posts_link('上一页');
    if($max_page > $range){
        if($paged < $range){for($i = 1; $i <= ($range + 1); $i++){echo "$i";}}
    elseif($paged >= ($max_page - ceil(($range/2)))){
        for($i = $max_page - $range; $i <= $max_page; $i++){echo "$i";}}
    elseif($paged >= $range && $paged < ($max_page - ceil(($range/2)))){
        for($i = ($paged - ceil($range/2)); $i <= ($paged + ceil(($range/2))); $i++){echo "$i";}}}
    else{for($i = 1; $i <= $max_page; $i++){echo "$i";}}
    next_posts_link('下一页');
    if($paged != $max_page){echo "最后一页";}}
}

参考CSS样式：

.page_navi{width:100%;height:20px;line-height:20px;text-align:left;overflow:hidden;padding-top:1em;}
.page_navi a{padding:1px 4px;margin:2px;text-decoration:none;color:#888;border:1px solid #ccf;}
.page_navi a:hover,.page_navi a.current{border:1px solid #356aa0;color:#356aa0;}

演示：
在endwhile和endif之间加上这段代码：

if(function_exists('wp_page_numbers')) {
    wp_page_numbers();
}
elseif(function_exists('wp_pagenavi')) {
    wp_pagenavi();
} else {
    global $wp_query;
    $total_pages = $wp_query->max_num_pages;
    if ( $total_pages > 1 ) {
        par_pagenavi(4);
    }
}