WordPress 禁止多个人同时登录一个账号

对于开放注册的 WordPress 站点来说,尤其是有会员购买服务的站点,可能需要禁止用户共享账号,也就是要禁止多个人同时登录一个账号。今天分享老外的一个方法,大家不妨试试。

将下面的代码到主题的 functions.php 中即可:

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/**
 * Detect if the current user has concurrent sessions
 *
 * @return bool
 */
function pcl_user_has_concurrent_sessions() {
	return ( is_user_logged_in() && count( wp_get_all_sessions() ) > 1 );
}
 
/**
 * Get the user's current session array
 *
 * @return array
 */
function pcl_get_current_session() {
	$sessions = WP_Session_Tokens::get_instance( get_current_user_id() );
 
	return $sessions->get( wp_get_session_token() );
}
 
/**
 * Only allow one session per user
 *
 * If the current user's session has been taken over by a newer
 * session then we will destroy their session automattically and
 * they will have to login again to continue.
 *
 * @action init
 *
 * @return void
 */
function pcl_disallow_account_sharing() {
	if ( ! pcl_user_has_concurrent_sessions() ) {
		return;
	}
 
	$newest  = max( wp_list_pluck( wp_get_all_sessions(), 'login' ) );
	$session = pcl_get_current_session();
 
	if ( $session['login'] === $newest ) {
		wp_destroy_other_sessions();
	} else {
		wp_destroy_current_session();
	}
}
add_action( 'init', 'pcl_disallow_account_sharing' );

/**
* Detect if the current user has concurrent sessions
*
* @return bool
*/
function pcl_user_has_concurrent_sessions() {
return ( is_user_logged_in() && count( wp_get_all_sessions() ) > 1 );
} /**
* Get the user’s current session array
*
* @return array
*/
function pcl_get_current_session() {
$sessions = WP_Session_Tokens::get_instance( get_current_user_id() ); return $sessions->get( wp_get_session_token() );
} /**
* Only allow one session per user
*
* If the current user’s session has been taken over by a newer
* session then we will destroy their session automattically and
* they will have to login again to continue.
*
* @action init
*
* @return void
*/
function pcl_disallow_account_sharing() {
if ( ! pcl_user_has_concurrent_sessions() ) {
return;
} $newest = max( wp_list_pluck( wp_get_all_sessions(), ‘login’ ) );
$session = pcl_get_current_session(); if ( $session[‘login’] === $newest ) {
wp_destroy_other_sessions();
} else {
wp_destroy_current_session();
}
}
add_action( ‘init’, ‘pcl_disallow_account_sharing’ );

如果大家不想折腾代码,可以直接下载插件 Prevent Concurrent Logins 安装启用也是一样的。

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