Adds a new feed type like /atom1/.

Parameters

$feednamestringrequired

Feed name. Should not start with '_'.

$callbackcallablerequired

Callback to run on feed display.

Return

More Information

Requires one-time use of flush_rules() to take effect.

$feedname parameter should not start with ‘_‘. Please refer #59945.

Source

function add_feed( $feedname, $callback ) {
	global $wp_rewrite;

	if ( ! in_array( $feedname, $wp_rewrite->feeds, true ) ) {
		$wp_rewrite->feeds[] = $feedname;
	}

	$hook = 'do_feed_' . $feedname;

	// Remove default function hook.
	remove_action( $hook, $hook );

	add_action( $hook, $callback, 10, 2 );

	return $hook;
}

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