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add_feed( string $feedname, callable $function )

Add a new feed type like /atom1/.

Parameters

$feedname

(string) (Required) Feed name.

$function

(callable) (Required) Callback to run on feed display.

Return

(string) Feed action name.

More Information

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

Source

File: wp-includes/rewrite.php 

function add_feed( $feedname, $function ) {
	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, $function, 10, 2 );

	return $hook;
}

Uses

Uses Description
wp-includes/plugin.php: remove_action()

Removes a function from a specified action hook.
wp-includes/plugin.php: add_action()

Hooks a function on to a specific action.

Changelog

Version Description
2.1.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/add_feed