从另一个WordPress网站提取帖子

本文介绍了从另一个WordPress网站提取帖子的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我正在尝试使用以下 http中的代码从我的个人网站上获得2条最新帖子. ://codex.wordpress.org/Function_Reference/fetch_feed#用法

<h2><?php _e( 'Recent news from Some-Other Blog:', 'my-text-domain' ); ?></h2>

<?php // Get RSS Feed(s)
include_once( ABSPATH . WPINC . '/feed.php' );

// Get a SimplePie feed object from the specified feed source.
$rss = fetch_feed( 'THISISWHEREMYURLGOES/' );

$maxitems = 0;

if ( ! is_wp_error( $rss ) ) : // Checks that the object is created correctly

    // Figure out how many total items there are, but limit it to 5.
    $maxitems = $rss->get_item_quantity( 2 );

    // Build an array of all the items, starting with element 0 (first element).
    $rss_items = $rss->get_items( 0, $maxitems );

endif;
?>

<ul>
<?php if ( $maxitems == 0 ) : ?>
    <li><?php _e( 'No items', 'my-text-domain' ); ?></li>
<?php else : ?>
    <?php // Loop through each feed item and display each item as a hyperlink. ?>
    <?php foreach ( $rss_items as $item ) : ?>
        <?php echo esc_html( $item->get_title() );  ?>
        <li>
            <a href="<?php echo esc_url( $item->get_permalink() ); ?>"
                title="<?php printf( __( 'Posted %s', 'my-text-domain' ), $item->get_date('j F Y | g:i a') ); ?>">
                <?php echo esc_html( $item->get_title() ); ?>
                <?php printf( __( 'Posted %s', 'my-text-domain' ), $item->get_date('j F Y | g:i a') ); ?>

            </a>
        </li>
    <?php endforeach; ?>
<?php endif; ?>

使用此代码，我可以获取帖子URL，标题和发布日期，这太好了！

With this code, I can get the Posts URL, the title and the date posted, which is great!

现在，尝试获取图像是另一个问题.我正在尝试使用:

Now, trying to get the image is another issue.I am trying to use :

<?php echo esc_html( $item->the_post_thumbnail() ); ?>

但是我得到了错误:致命错误:调用未定义的方法SimplePie_Item :: the_post_thumbnail()

But I get the error :Fatal error: Call to undefined method SimplePie_Item::the_post_thumbnail()

因此，使用SimplePie，有没有办法获取帖子图像?

So, using SimplePie, is there a way to get the posts image?

主要

这种获取RSS feed的方法不好，它在整个网站上引起了很多问题，因此，如果有人可以向我展示/将我定向到可以从另一个WordPress网站获取4个最新帖子的地方，那太棒了！

This way of getting the RSS feed isn't great, it is causing alot of issues throughout the site, so if anyone could show me/direct me to something where I can get the 4 latest posts from another WordPress site, that'd be awesome!

推荐答案

如您所见，WordPress提要有一些限制.由于您已寻求替代解决方案，因此，我绝对建议您使用 WP REST API .

As you've found, WordPress feeds have some limitations. Since you've asked for an alternative solution, I'd definitely recommend using WP REST API.

由于WP API尚未成为WP Core的一部分，因此您需要执行以下操作:

Since WP API isn't yet part of the WP Core, you'll want to do the following:

转到插件"面板(正在尝试从您的个人网站上提取帖子的网站上)并安装 WP REST API(WP API).
激活插件
获取帖子与访问以下内容一样容易:http://yoursite.com/wp-json/posts

Head to your Plugins panel (on the site you're trying to pull posts from...your personal website) and install WP REST API (WP API).
Activate the plugin
Getting your posts is as easy as going to: http://yoursite.com/wp-json/posts

由于只需要四个帖子，因此可以使用过滤器:

Since you only want four posts, you can use filters:

http://yoursite.com/wp-json/posts?filter[posts_per_page]=4

要使此JSON在PHP中变为可用状态:

To get this JSON into a usable state in PHP:

// Get the JSON
$json = file_get_contents('http://yoursite.com/wp-json/posts?filter[posts_per_page]=4');
// Convert the JSON to an array of posts
$posts = json_decode($json);

现在，您可以根据需要消化此$posts数组(通过遍历它).例如:

You can now digest this $posts array however you want (by looping through it). For example:

foreach ($posts as $p) {
    echo '<p>Title: ' . $p->title . '</p>';
    echo '<p>Date:  ' . date('F jS', strtotime($p->date)) . '</p>';
    // Output the featured image (if there is one)
    echo $p->featured_image ? '<img src="' . $p->featured_image->guid . '">' : '';
}

更多信息在WP API文档中.

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