Determines whether a site is the main site of the current network.

Parameters

$site_idintoptional

Site ID to test. Defaults to current site.

Default:null

$network_idintoptional

Network ID of the network to check for.
Defaults to current network.

Default:null

Return

More Information

Replaces function is_main_blog(), deprecated since 3.0.0. (wp-includes/ms-deprecated.php)

Source

function is_main_site( $site_id = null, $network_id = null ) {
	if ( ! is_multisite() ) {
		return true;
	}

	if ( ! $site_id ) {
		$site_id = get_current_blog_id();
	}

	$site_id = (int) $site_id;

	return get_main_site_id( $network_id ) === $site_id;
}

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