WordPressで記事アーカイブページを作成する方法を詳しく解説

<?php/*
 * Template Name: sitemap
 * @author: Ludou  
 * @Blog  : https://www.ludou.org/
 */

<div class="myArchive">
<ul>
<?php
/**
 * WordPress分类存档页面
 * 作者：露兜
 * 博客：https://www.ludou.org/
 * 最后修改：2012年8月27日
 */
    $categoryPosts = $wpdb->get_results("
    SELECT post_title, ID, post_name, slug, {$wpdb->prefix}terms.term_id AS catID, {$wpdb->prefix}terms.name AS categoryname
    FROM {$wpdb->prefix}posts, {$wpdb->prefix}term_relationships, {$wpdb->prefix}term_taxonomy, {$wpdb->prefix}terms
    WHERE {$wpdb->prefix}posts.ID = {$wpdb->prefix}term_relationships.object_id
    AND {$wpdb->prefix}terms.term_id = {$wpdb->prefix}term_taxonomy.term_id
    AND {$wpdb->prefix}term_taxonomy.term_taxonomy_id = {$wpdb->prefix}term_relationships.term_taxonomy_id
    AND {$wpdb->prefix}term_taxonomy.taxonomy = &#39;category&#39;
    AND {$wpdb->prefix}posts.post_status = &#39;publish&#39;
    AND {$wpdb->prefix}posts.post_type = &#39;post&#39;
    ORDER BY {$wpdb->prefix}terms.term_id, {$wpdb->prefix}posts.post_date DESC");

    $postID = 0;
    if ( $categoryPosts ) :
        $category = $categoryPosts[0]->catID;
        foreach ($categoryPosts as $key => $mypost) :
            if($postID == 0) {
                echo &#39;<li><strong>分类:</strong> <a title="&#39;.$mypost->categoryname.&#39;" href="&#39;.get_category_link($mypost->catID).&#39;">&#39;.$mypost->categoryname."</a>\n";
                echo &#39;<ul>&#39;;
            }
           
            if($category == $mypost->catID) {          
?>
    <li><a title="<?php echo $mypost->post_title; ?>" href="<?php echo get_permalink( $mypost->ID ); ?>"><?php echo $mypost->post_title; ?></a></li>
<?php
                $category = $mypost->catID;
                $postID++;
            }
            else {
                echo "</ul>\n</li>";
                echo &#39;<li><strong>分类:</strong> <a title="&#39;.$mypost->categoryname.&#39;" href="&#39;.get_category_link($mypost->catID).&#39;">&#39;.$mypost->categoryname."</a>\n";
                echo &#39;<ul>&#39;;
?>
    <li><a title="<?php echo $mypost->post_title; ?>" href="<?php echo get_permalink( $mypost->ID ); ?>"><?php echo $mypost->post_title; ?></a></li>
<?php
                $category = $mypost->catID;
                $postID = 1;
            }
        endforeach;
    endif;
    echo "</ul>\n</li>";
?>

<li><strong>页面</strong>
<ul>
<?php
    // 读取所有页面
    $mypages = $wpdb->get_results("
        SELECT post_title, post_name, ID
        FROM {$wpdb->prefix}posts
        WHERE post_status = &#39;publish&#39;
        AND post_type = &#39;page&#39;");

    if ( $mypages ) :
        foreach ($mypages as $mypage) :
?>
    <li><a title="<?php echo $mypage->post_title; ?>" href="<?php echo get_permalink( $mypage->ID ); ?>"><?php echo $mypage->post_title; ?></a></li>
    <?php endforeach; echo "</ul>\n</li>"; endif; ?>
</ul>
<p><a href="https://www.ludou.org/sitemap.xml">查看 sitemap.xml</a></p>
</div>

.myArchive {
	line-height:18px;
	margin:1.5em 0;
	color:#555555;
	font-size:14px;
}
.myArchive h2 {
	font-size:16px;
	margin:0 0 10px;
	font-weight:bold;
}
.myArchive ul {
	line-height:21px;
	padding:0 0 0 2em;
}
.myArchive ul li {
	background:none;
	list-style-type:disc;
	margin:0;
	padding-left:10px;
}
.myArchive a {
	color:#2970A6;
	outline:medium none;
	text-decoration:none;
}
.myArchive a:hover {
	text-decoration:underline;
}
.myArchive ul li ul {
	margin:10px 0;
}
.myArchive ul li ul li {
	list-style-type:circle;
}

echo &#39;<ul>&#39;;
wp_get_archives(&#39;type=postbypost&show_post_count=1&#39;);
echo &#39;</ul>&#39;;