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【WordPress】他のブログ記事をRSSで取得する

Last updated at 2015-11-10Posted at 2014-07-12

WordPressにRSSを取得するfetch_feedという関数があるので、これを使う。
こんな感じ

hoge.php

<?php
	include_once(ABSPATH . WPINC . '/feed.php');
	$rss_url = array(
	  'RSS_url'
	);

	$rss = fetch_feed($rss_url);
	if (!is_wp_error($rss)){
	  $maxitems = $rss->get_item_quantity(5);
	  $rss_items = $rss->get_items(0, $maxitems);
	}

	foreach($rss_items as $key => $value){
	  $first_img = '';
	  if ( preg_match( '/<img.+?src=[\'"]([^\'"]+?)[\'"].*?>/msi', $value->get_content(), $matches ) ) {
	    $first_img = $matches[1];
	  }

	  echo '
	  <li style="margin-bottom: 20px;">
	    <img src="'.esc_attr( $first_img ).'" width="100" height="100">
	    <a href="'.$value->get_permalink().'" target="_blank">'.$value->get_title().'</a>
	  </li>
	  ';
	}
?>

取得件数を変えるにはget_item_quantity(5)の数字を変更する

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