How to eliminate duplicate feed items.

When you have a large set of feed urls which you would like to display, there is a common issue to remove the duplicates based on their urls.

You can use this code snippet to achieve this: 

function tifd_feedzy_remove_duplicates( $items, $feedURL ) {
	$uniques = array();
	foreach ( $items as $item ) {
		if ( isset( $uniques[ strval( md5( $item->get_permalink() ) ) ] ) ) {
		$uniques[ md5( $item->get_permalink() ) ] = $item;
	return array_values( $uniques );
add_filter( 'feedzy_feed_items', 'tifd_feedzy_remove_duplicates', 10, 2 );

Paste the above code snippet into the custom plugin created using the instructions here.

You can create a child theme too and paste the code in the child theme's functions.php.

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