Adding a feed to WP posts, scraping the featured images when thumbnails missing from feed

wp_rss_feed_add_to_post_w_thumbs.php

//put your feed in post/page with
//[add_rss url = "my feed uri" 
//items = "number of items to retrieve" 
//title = "title for" 
//show_date = "show date or not" 
//show_author "show author or not" 
//show_summary = "whether to show a summary of each item"]
//declare the function
//from the original wp_widget_rss_output
//bit customized
//Some wp feeds miss thumbnails, so
//this version tries to scrape the featured image
//of feeed items, when missing and put them in html
function epy_widget_rss_output( $atts ) {
//where fetch_feed resides
include_once( ABSPATH . WPINC . '/feed.php' );
//here using SImple HTML Dom Parser
//http://simplehtmldom.sourceforge.net/
require_once(TEMPLATEPATH.'/lib/simple_html_dom.php');
// My Attributes with defaults if missing
	$atts=shortcode_atts(
	array(
		'url' => 'http://mysite/feed/rss2',
		'items' => '4',
		'title' => '',
		'show_date' => '1',
		'show_author' => '1',
		'show_summary' => '1'
		), $atts,'add_rss' );

	//[add_rss] will be my shortcode
//parse first attribute
	$feedurl=esc_attr ($atts['url']);
// retrieve the feed with fetch_feed
	$rss = fetch_feed($feedurl);	
//if error
	if ( is_wp_error($rss) ) {
		if ( is_admin() || current_user_can('manage_options') )
		return '<p>' . sprintf( __('<strong>RSS Error</strong>: %s'), $rss->get_error_message() ) . '</p>';
		
	}
//parse items attribute
	$items = (int) $atts[items];
	if ( $items < 1 || 20 < $items )
		$items = 10;
//parse other attributes, title is skipped as not useful in my case
	$show_summary  = (int) $atts[show_summary];
	$show_author   = (int) $atts[show_author];
	$show_date     = (int) $atts[show_date];
//try if feed has some items if not end
	if ( !$rss->get_item_quantity() ) {
	return '<ul><li>' . __( 'An error has occurred, which probably means the feed is down. Try again later.' ) . '</li></ul>';
	$rss->__destruct();
	unset($rss);
	return;
	}

//begin to build my output, remember you can not use echo in shortcode handlers	
	$myout="<ul class='scoop'>";
//parse the items
	foreach ( $rss->get_items(0, $items) as $item ) {
//parse the link
	$link = $item->get_link();
//sanitizing
	while ( stristr($link, 'http') != $link )
		$link = substr($link, 1);
	$link = esc_url(strip_tags($link));
//parse the item title		
	$title = esc_attr(strip_tags($item->get_title()));
	if ( empty($title) )
	$title = __('Untitled');
//parse and sanitize the item summary
	$desc = str_replace( array("\n", "\r"), ' ', esc_attr( strip_tags( @html_entity_decode( $item->get_description(), ENT_QUOTES, get_option('blog_charset') ) ) ) );
		
	$excerpt = wp_html_excerpt( $desc, 170,' [...]' );

// Append ellipsis. Change existing [...] to [&hellip;].
	if ( '[...]' == substr( $excerpt, -5 ) )
		$excerpt = substr( $excerpt, 0, -5 ) . '[&hellip;]';
	elseif ( '[&hellip;]' != substr( $excerpt, -10 ) && $desc != $excerpt )
		$excerpt .= ' [&hellip;]';

		$excerpt = esc_html( $excerpt );
//prepare summary for output
	if ( $show_summary ) {
			
	$summary = "<div class='rssSummary2'><p>$excerpt</p></div>";
	} else {
	$summary = '';
	}
//prepare date for output: you can customize html
	$date = '';
	if ( $show_date ) {
	$date = $item->get_date( 'U' );

		if ( $date ) {
		$date = ' <span class="rss-date"><em>' . date_i18n( get_option( 'date_format' ), $date ) . '</em></span>';
		}
	}
//prepare author for output: you can customize html
	$author = '';
	if ( $show_author ) {
	$author = $item->get_author();
		if ( is_object($author) ) {
		$author = $author->get_name();
		$author = ' <span class="rss-author"><em>by ' . esc_html( strip_tags( $author ) ) . '</em></span>';
		}
	}
//check if an item thumbnail is present
		if ($enclosure = $item->get_enclosure())
        {
		$link_img=$enclosure->get_link();
							
			if ($link_img != '') {
                	$mythumb= '<div><img src="' . $link_img . '" class="feed-thumb" /></div>';
                                  }
                        //if thumb missing in feed
			else {
			$myhtml = file_get_html($link);
			//capture on item's page url
			//image with class=attachment-post-thumbnail
			//usually this is the featured image
			$myelement =  $myhtml->find('img[class=attachment-post-thumbnail]');
			$link_img_parsed=$myelement[0]->src; 
			$mythumb= '<div><img src="' . $link_img_parsed. '" class="feed-thumb" /></div>';
							      }
        } 
//add to output this complete item		
$myout=$myout."<li><h2 class='rss-title'><a class='rsswidget' href='$link' title='$desc' target='_blank'>$title</a></h2><div>{$mythumb}</div><div class='rss-meta'>{$date}{$author}</div><div>{$summary}</div></li>";
		
	}
//close list as items finish	
	$myout=$myout."</ul>";
	
	$rss->__destruct();
	unset($rss);
	return $myout;
}
// Add Shortcode
add_shortcode( 'add_rss', 'epy_widget_rss_output' );