get_user_option( string $option, int $user, string $deprecated = ” )

检索可以是每个站点或每个网络的用户选项。
Retrieve user option that can be either per Site or per Network.

目录锚点：#说明#参数#返回#源码#笔记

说明（Description）

如果没有给出用户ID，则将使用当前用户。如果给定了用户ID，则将检索用户数据。结果的过滤器还将传递原始选项名，最后将用户数据对象作为第三个参数。

该选项将首先检查每个站点名称，然后检查每个网络名称。

参数（Parameters）

返回（Return）

（mixed）成功时的用户选项值，失败时为false。

源码（Source）

/**
 * Retrieve user option that can be either per Site or per Network.
 *
 * If the user ID is not given, then the current user will be used instead. If
 * the user ID is given, then the user data will be retrieved. The filter for
 * the result, will also pass the original option name and finally the user data
 * object as the third parameter.
 *
 * The option will first check for the per site name and then the per Network name.
 *
 * @since 2.0.0
 *
 * @global wpdb $wpdb WordPress database object for queries.
 *
 * @param string $option     User option name.
 * @param int    $user       Optional. User ID.
 * @param string $deprecated Use get_option() to check for an option in the options table.
 * @return mixed User option value on success, false on failure.
 */
function get_user_option( $option, $user = 0, $deprecated = '' ) {
	global $wpdb;

	if ( !empty( $deprecated ) )
		_deprecated_argument( __FUNCTION__, '3.0' );

	if ( empty( $user ) )
		$user = get_current_user_id();

	if ( ! $user = get_userdata( $user ) )
		return false;

	$prefix = $wpdb->get_blog_prefix();
	if ( $user->has_prop( $prefix . $option ) ) // Blog specific
		$result = $user->get( $prefix . $option );
	elseif ( $user->has_prop( $option ) ) // User specific and cross-blog
		$result = $user->get( $option );
	else
		$result = false;

	/**
	 * Filter a specific user option value.
	 *
	 * The dynamic portion of the hook name, `$option`, refers to the user option name.
	 *
	 * @since 2.5.0
	 *
	 * @param mixed   $result Value for the user's option.
	 * @param string  $option Name of the option being retrieved.
	 * @param WP_User $user   WP_User object of the user whose option is being retrieved.
	 */
	return apply_filters( "get_user_option_{$option}", $result, $option, $user );
}

笔记（Notes）

基本示例