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blog:2019_04_27_09_04wordpress_extract_article [2019/12/07 21:09] (当前版本) |
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+ | ====== Wordpress extract article ====== | ||
+ | |||
+ | wordpress提取文章(最新,最热,随机) | ||
+ | 博客分类: WP / Joomla! / Magento / Shopify / Drupal / Moodle / Zimbra | ||
+ | |||
+ | 1. WordPress中获取最新文章的代码 | ||
+ | |||
+ | Php代码 | ||
+ | < | ||
+ | < | ||
+ | <?php query_posts(' | ||
+ | < | ||
+ | <?php while (have_posts()) : the_post(); ?> | ||
+ | < | ||
+ | <?php endwhile;?> | ||
+ | </ | ||
+ | </ | ||
+ | |||
+ | 上面代码按照行号解释如下: | ||
+ | |||
+ | 小模块的标题 | ||
+ | 读取6篇文章,排除分类ID为111里面的文章 | ||
+ | 文章列表开始 | ||
+ | 循环读取每一条文章 | ||
+ | 显示文章标题、链接 | ||
+ | 循环结束 | ||
+ | 文章列表结束 | ||
+ | 小模块结束 | ||
+ | 关于上面代码中 query_posts() 函数的用法, 可以看这里: | ||
+ | |||
+ | 说说WordPress的主查询函数-query_posts() | ||
+ | |||
+ | |||
+ | |||
+ | 来源: http:// | ||
+ | |||
+ | |||
+ | |||
+ | 2. WordPress显示最新文章,最热文章,随机显示文章代码 | ||
+ | |||
+ | |||
+ | |||
+ | WordPress很多插件可以实现相关文章的功能,插件的优点是配置简单,但是可 能会对网站的速度造成一些小的影响,所以很多人还是比较喜欢用代码实现需要的功能,但是话又说回来了,代码实现也有缺点,就是配置复杂,不懂代码的人完全 摸不着头脑或者只能照搬别人的代码,还不如用插件。 | ||
+ | |||
+ | 这里我整理编写了几种用代码实现相关文章的方法,这其中会详细标明各部分代码的作用,以及如何自定义你想要的功 能,希望对大家有所帮助,有什么问题可以给本文发表评论,我会及时给你回复。开始之前,说明一点,以下所有方法输出的HTML代码格式都是以下形式,你可 以根据需要进行修改: | ||
+ | Html代码 | ||
+ | <ul id=" | ||
+ | <li>* <a title=" | ||
+ | <li>* <a title=" | ||
+ | ...... | ||
+ | </ | ||
+ | |||
+ | 方法一:标签相关 | ||
+ | |||
+ | |||
+ | 首先获取文章的所有标签,接着获取这些标签下的 n 篇文章,那么这 n 篇文章就是与该文章相关的文章了。现在可以见到的WordPress相关文章插件都是使用的这个方法。下面是实现的代码: | ||
+ | |||
+ | Php代码 | ||
+ | <ul id=" | ||
+ | <? | ||
+ | $post_tags = wp_get_post_tags($post-> | ||
+ | if ($post_tags) { | ||
+ | | ||
+ | foreach ($post_tags as $tag) | ||
+ | { | ||
+ | // 获取标签列表 | ||
+ | $tag_list[] .= $tag-> | ||
+ | } | ||
+ | | ||
+ | // 随机获取标签列表中的一个标签 | ||
+ | $post_tag = $tag_list[ mt_rand(0, count($tag_list) - 1) ]; | ||
+ | | ||
+ | // 该方法使用 query_posts() 函数来调用相关文章,以下是参数列表 | ||
+ | $args = array( | ||
+ | ' | ||
+ | ' | ||
+ | ' | ||
+ | ' | ||
+ | ' | ||
+ | ); | ||
+ | query_posts($args); | ||
+ | | ||
+ | if (have_posts()) : | ||
+ | while (have_posts()) : the_post(); update_post_caches($posts); | ||
+ | <li>* <a href="<? | ||
+ | <?php endwhile; else : ?> | ||
+ | <li>* 暂无相关文章</ | ||
+ | <?php endif; wp_reset_query(); | ||
+ | </ | ||
+ | |||
+ | 使 用说明:" | ||
+ | |||
+ | |||
+ | |||
+ | 方法二:分类相关 | ||
+ | |||
+ | 本方法是通过获取该文章的分类id,然后获取该分类下的文章,来达到获取相关文章的目的。 | ||
+ | |||
+ | Php代码 | ||
+ | <ul id=" | ||
+ | <? | ||
+ | $cats = wp_get_post_categories($post-> | ||
+ | if ($cats) { | ||
+ | $args = array( | ||
+ | ' | ||
+ | ' | ||
+ | ' | ||
+ | ' | ||
+ | ); | ||
+ | query_posts($args); | ||
+ | | ||
+ | if (have_posts()) : | ||
+ | while (have_posts()) : the_post(); update_post_caches($posts); | ||
+ | <li>* <a href="<? | ||
+ | <?php endwhile; else : ?> | ||
+ | <li>* 暂无相关文章</ | ||
+ | <?php endif; wp_reset_query(); | ||
+ | </ | ||
+ | |||
+ | 方法三:标签相关,SQL获取 | ||
+ | 获取相关文章的原理与方法一相似,不过在获取文章的时候是以SQL语句来直接读取数据库,从而随机获取6篇相关文章记录,而不是WordPress的函数query_posts(). | ||
+ | |||
+ | Php代码 | ||
+ | <ul id=" | ||
+ | <? | ||
+ | $post_tags = wp_get_post_tags($post-> | ||
+ | if ($post_tags) { | ||
+ | $tag_list = ''; | ||
+ | foreach ($post_tags as $tag) | ||
+ | { | ||
+ | // 获取标签列表 | ||
+ | $tag_list .= $tag-> | ||
+ | } | ||
+ | $tag_list = substr($tag_list, | ||
+ | | ||
+ | $related_posts = $wpdb-> | ||
+ | SELECT post_title, ID | ||
+ | FROM {$wpdb-> | ||
+ | WHERE {$wpdb-> | ||
+ | AND ID = object_id | ||
+ | AND taxonomy = ' | ||
+ | AND post_status = ' | ||
+ | AND post_type = ' | ||
+ | AND term_id IN (" . $tag_list . " | ||
+ | AND ID != '" | ||
+ | ORDER BY RAND() | ||
+ | LIMIT 6" | ||
+ | // 以上代码中的 6 为限制只获取6篇相关文章 | ||
+ | // 通过修改数字 6,可修改你想要的文章数量 | ||
+ | | ||
+ | if ( $related_posts ) { | ||
+ | foreach ($related_posts as $related_post) { | ||
+ | ?> | ||
+ | < | ||
+ | <?php } } else { ?> | ||
+ | < | ||
+ | <?php } } ?> | ||
+ | </ | ||
+ | | ||
+ | 方法四:分类相关,SQL获取 | ||
+ | |||
+ | 获取相关文章的原理与方法二相似,不过在获取文章的时候是以SQL语句来直接读取数据库,从而随机获取6篇相关文章记录,而不是WordPress的函数query_posts(). | ||
+ | |||
+ | Php代码 | ||
+ | <ul id=" | ||
+ | <? | ||
+ | $cats = wp_get_post_categories($post-> | ||
+ | if ($cats) { | ||
+ | | ||
+ | $related = $wpdb-> | ||
+ | SELECT post_title, ID | ||
+ | FROM {$wpdb-> | ||
+ | WHERE {$wpdb-> | ||
+ | AND {$wpdb-> | ||
+ | AND {$wpdb-> | ||
+ | AND {$wpdb-> | ||
+ | AND {$wpdb-> | ||
+ | AND {$wpdb-> | ||
+ | AND {$wpdb-> | ||
+ | ORDER BY RAND( ) | ||
+ | LIMIT 6" | ||
+ | | ||
+ | if ( $related ) { | ||
+ | foreach ($related as $related_post) { | ||
+ | ?> | ||
+ | <li>* <a href="<? | ||
+ | <?php } } else { ?> | ||
+ | <li>* 暂无相关文章</ | ||
+ | <?php } }?> | ||
+ | </ | ||
+ | | ||
+ | 方法五:作者相关 | ||
+ | |||
+ | 该方法是获取该文章作者的其他文章来充当相关文章,代码如下: | ||
+ | |||
+ | Php代码 | ||
+ | <ul id=" | ||
+ | <? | ||
+ | $post_author = get_the_author_meta( ' | ||
+ | $args = array( | ||
+ | ' | ||
+ | ' | ||
+ | ' | ||
+ | ' | ||
+ | ' | ||
+ | ); | ||
+ | query_posts($args); | ||
+ | | ||
+ | if (have_posts()) : | ||
+ | while (have_posts()) : the_post(); update_post_caches($posts); | ||
+ | <li>* <a href="<? | ||
+ | <?php endwhile; else : ?> | ||
+ | <li>* 暂无相关文章</ | ||
+ | <?php endif; wp_reset_query(); | ||
+ | </ | ||
+ | | ||
+ | 时间效率对比 | ||
+ | |||
+ | 我们将用之前的一个php代码对以上各个相关文章代码执行时间进行测算,以便对以上各个的方法进行效率,给你的选择提供参考。以下是在同一篇文章中获取6篇相关文章,以上各方法最终测算的时间如下: | ||
+ | |||
+ | 方法一:0.18067908287048 秒 | ||
+ | |||
+ | 方法二:0.057158946990967 秒 | ||
+ | |||
+ | 方法三:0.037126064300537 秒 | ||
+ | |||
+ | 方法四:0.045628070831299 秒 | ||
+ | |||
+ | 方法五:0.023991823196411 秒 | ||
+ | |||
+ | |||
+ | |||
+ | 来源: http:// | ||
+ | |||
+ | |||
+ | |||
+ | 3. wordpress如何获取某个分类下的文章? | ||
+ | |||
+ | |||
+ | |||
+ | 只需通过get_posts来获取分类ID就可以输出分类下的文章,以及通过numberposts来控制文章显示的数量。 | ||
+ | |||
+ | Java代码 | ||
+ | <?php $posts = get_posts( " | ||
+ | <?php if( $posts ) : ?> | ||
+ | < | ||
+ | < | ||
+ | <a href=”<? | ||
+ | </ | ||
+ | <?php endforeach; ?> | ||
+ | </ | ||
+ | <?php endif; ?> | ||
+ | |||
+ | 来源: http:// | ||
+ | |||
+ | |||
+ | |||
+ | 4. How to List Your Most Popular Posts in WordPress | ||
+ | |||
+ | |||
+ | |||
+ | I decided my sidebar was looking a little plain. It needed something more than just ads, so I placed a list of my popular posts there. I think it looks pretty cool and it was very simple to do. I just created a PHP function and added it to my functions.php files and then added some styles to get it to look the way I wanted. | ||
+ | |||
+ | First lets create the function. We’ll call it popularPosts. Be sure to add it between tags. | ||
+ | |||
+ | Php代码 | ||
+ | function popularPosts($num) { | ||
+ | global $wpdb; | ||
+ | | ||
+ | $posts = $wpdb-> | ||
+ | | ||
+ | foreach ($posts as $post) { | ||
+ | setup_postdata($post); | ||
+ | $id = $post-> | ||
+ | $title = $post-> | ||
+ | $count = $post-> | ||
+ | | ||
+ | if ($count != 0) { | ||
+ | $popular .= '< | ||
+ | $popular .= '<a href="' | ||
+ | $popular .= '</ | ||
+ | } | ||
+ | } | ||
+ | return $popular; | ||
+ | } | ||
+ | |||
+ | Now to call the function, all we need to do is place this code wherever we want our list to appear. Let’s call for a list of 10 items by placing a ’10′ as our $num variable when we call our function. | ||
+ | |||
+ | Php代码 | ||
+ | <div class=" | ||
+ | < | ||
+ | < | ||
+ | <?php echo popularPosts(10); | ||
+ | </ | ||
+ | </ | ||
+ | |||
+ | 来源: http:// | ||
+ | |||
+ | |||
+ | |||
+ | 分享到: | ||
+ | 说说WordPress的主查询函数-query_posts() | wordpress自定义个性化首页 | ||
+ | 2012-11-30 06:10浏览 14603评论(0)分类: | ||
+ | 评论 | ||
+ | https:// | ||
+ | |||
+ | {{tag>}} | ||
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+ | |||
+ | |||