get_network_option( int|null $network_id, string $option, mixed $default_value = false ): mixed

Source

function get_network_option( $network_id, $option, $default_value = false ) {	global $wpdb;	if ( $network_id && ! is_numeric( $network_id ) ) {	return false;	}	$network_id = (int) $network_id;	// Fallback to the current network if a network ID is not specified.	if ( ! $network_id ) {	$network_id = get_current_network_id();	}	/** * Filters the value of an existing network option before it is retrieved. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * Returning a value other than false from the filter will short-circuit retrieval * and return that value instead. * * @since 2.9.0 As 'pre_site_option_' . $key * @since 3.0.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$network_id` parameter was added. * @since 4.9.0 The `$default_value` parameter was added. * * @param mixed $pre_site_option The value to return instead of the option value. This differs from * `$default_value`, which is used as the fallback value in the event * the option doesn't exist elsewhere in get_network_option(). * Default false (to skip past the short-circuit). * @param string $option Option name. * @param int $network_id ID of the network. * @param mixed $default_value The fallback value to return if the option does not exist. * Default false. */	$pre = apply_filters( "pre_site_option_{$option}", false, $option, $network_id, $default_value );	if ( false !== $pre ) {	return $pre;	}	// Prevent non-existent options from triggering multiple queries.	$notoptions_key = "$network_id:notoptions";	$notoptions = wp_cache_get( $notoptions_key, 'site-options' );	if ( is_array( $notoptions ) && isset( $notoptions[ $option ] ) ) {	/** * Filters the value of a specific default network option. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 3.4.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$network_id` parameter was added. * * @param mixed $default_value The value to return if the site option does not exist * in the database. * @param string $option Option name. * @param int $network_id ID of the network. */	return apply_filters( "default_site_option_{$option}", $default_value, $option, $network_id );	}	if ( ! is_multisite() ) {	/** This filter is documented in wp-includes/option.php */	$default_value = apply_filters( 'default_site_option_' . $option, $default_value, $option, $network_id );	$value = get_option( $option, $default_value );	} else {	$cache_key = "$network_id:$option";	$value = wp_cache_get( $cache_key, 'site-options' );	if ( ! isset( $value ) || false === $value ) {	$row = $wpdb->get_row( $wpdb->prepare( "SELECT meta_value FROM $wpdb->sitemeta WHERE meta_key = %s AND site_id = %d", $option, $network_id ) );	// Has to be get_row() instead of get_var() because of funkiness with 0, false, null values.	if ( is_object( $row ) ) {	$value = $row->meta_value;	$value = maybe_unserialize( $value );	wp_cache_set( $cache_key, $value, 'site-options' );	} else {	if ( ! is_array( $notoptions ) ) {	$notoptions = array();	}	$notoptions[ $option ] = true;	wp_cache_set( $notoptions_key, $notoptions, 'site-options' );	/** This filter is documented in wp-includes/option.php */	$value = apply_filters( 'default_site_option_' . $option, $default_value, $option, $network_id );	}	}	}	if ( ! is_array( $notoptions ) ) {	$notoptions = array();	wp_cache_set( $notoptions_key, $notoptions, 'site-options' );	}	/** * Filters the value of an existing network option. * * The dynamic portion of the hook name, `$option`, refers to the option name. * * @since 2.9.0 As 'site_option_' . $key * @since 3.0.0 * @since 4.4.0 The `$option` parameter was added. * @since 4.7.0 The `$network_id` parameter was added. * * @param mixed $value Value of network option. * @param string $option Option name. * @param int $network_id ID of the network. */	return apply_filters( "site_option_{$option}", $value, $option, $network_id ); } 

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