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WP_User::get_site_id()

Gets the ID of the site for which the user’s capabilities are currently initialized.

Return

(int) Site ID.

Source

File: wp-includes/class-wp-user.php 

public function get_site_id() {
		return $this->site_id;
	}

Changelog

Version Description
4.9.0 Introduced.

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