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is_main_network › WordPress Function

Since3.7.0
Deprecatedn/a
› is_main_network ( $network_id = null )
Parameters:
  • (int) $network_id Optional. Network ID to test. Defaults to current network.
    Required: No
    Default: null
Returns:
  • (bool) True if $network_id is the main network, or if not running Multisite.
Defined at:
Codex:

Determines whether a network is the main network of the Multisite installation.



Related Functions: get_main_network_id, is_main_query, wp_is_large_network, is_main_site, install_network

Source 

function is_main_network( $network_id = null ) {
	if ( ! is_multisite() ) {
		return true;
	}

	if ( null === $network_id ) {
		$network_id = get_current_network_id();
	}

	$network_id = (int) $network_id;

	return ( get_main_network_id() === $network_id );
}