WP_User::__construct( int|string|object $id = 0, string $name = '', int $site_id = 0 )

128	public function __construct( $id = 0, $name = '', $site_id = 0 ) {129		global $wpdb;130 131		if ( ! isset( self::$back_compat_keys ) ) {132			$prefix = $wpdb->prefix;133 134			self::$back_compat_keys = array(135				'user_firstname'             => 'first_name',136				'user_lastname'              => 'last_name',137				'user_description'           => 'description',138				'user_level'                 => $prefix . 'user_level',139				$prefix . 'usersettings'     => $prefix . 'user-settings',140				$prefix . 'usersettingstime' => $prefix . 'user-settings-time',141			);142		}143 144		if ( $id instanceof WP_User ) {145			$this->init( $id->data, $site_id );146			return;147		} elseif ( is_object( $id ) ) {148			$this->init( $id, $site_id );149			return;150		}151 152		if ( ! empty( $id ) && ! is_numeric( $id ) ) {153			$name = $id;154			$id   = 0;155		}156 157		if ( $id ) {158			$data = self::get_data_by( 'id', $id );159		} else {160			$data = self::get_data_by( 'login', $name );161		}162 163		if ( $data ) {164			$this->init( $data, $site_id );165		} else {166			$this->data = new stdClass();167		}168	}