bp_core_get_site_path()

function bp_core_get_site_path() {
	global $current_site;

	if ( is_multisite() ) {
		$site_path = $current_site->path;
	} else {
		$site_path = (array) explode( '/', home_url() );

		if ( count( $site_path ) < 2 ) {
			$site_path = '/';
		} else {
			// Unset the first three segments (http(s)://example.com part).
			unset( $site_path[0] );
			unset( $site_path[1] );
			unset( $site_path[2] );

			if ( !count( $site_path ) ) {
				$site_path = '/';
			} else {
				$site_path = '/' . implode( '/', $site_path ) . '/';
			}
		}
	}

	/**
	 * Filters the path of the current site.
	 *
	 * @since BuddyPress 1.2.0
	 *
	 * @param string $site_path URL to the current site.
	 */
	return apply_filters( 'bp_core_get_site_path', $site_path );
}