update_blog_option() WordPress Function

The update_blog_option() function is used to update a blog option for the specified blog. The function takes three arguments: the blog id, the option key, and the option value. The function returns the new option value if the option was updated successfully, or false if the update failed.

update_blog_option( int $id, string $option, mixed $value, mixed $deprecated = null ) #

function update_blog_option( $id, $option, $value, $deprecated = null ) {
	$id = (int) $id;

	if ( null !== $deprecated ) {
		_deprecated_argument( __FUNCTION__, '3.1.0' );
	}

	if ( get_current_blog_id() == $id ) {
		return update_option( $option, $value );
	}

	switch_to_blog( $id );
	$return = update_option( $option, $value );
	restore_current_blog();

	return $return;
}