Title: Prevent Concurrent Logins Author: Frankie Jarrett Published: 2014 年 12 月 31 日 Last modified: 2016 年 8 月 16 日 --- 搜尋外掛 ![](https://ps.w.org/prevent-concurrent-logins/assets/banner-772x250.png?rev=1152517) 這個外掛**並未在最新的 3 個 WordPress 主要版本上進行測試**。開發者可能不再對這個 外掛進行維護或提供技術支援，並可能會與更新版本的 WordPress 產生使用上的相容性問題。 ![](https://ps.w.org/prevent-concurrent-logins/assets/icon-256x256.png?rev=1152517) # Prevent Concurrent Logins 由 [Frankie Jarrett](https://profiles.wordpress.org/fjarrett/) 開發 [下載](https://downloads.wordpress.org/plugin/prevent-concurrent-logins.0.4.0.zip) * [詳細資料](https://tw.wordpress.org/plugins/prevent-concurrent-logins/#description) * [使用者評論](https://tw.wordpress.org/plugins/prevent-concurrent-logins/#reviews) * [開發資訊](https://tw.wordpress.org/plugins/prevent-concurrent-logins/#developers) [技術支援](https://wordpress.org/support/plugin/prevent-concurrent-logins/) ## 外掛說明 **Did you find this plugin helpful? Please consider [leaving a 5-star review](https://wordpress.org/support/view/plugin-reviews/prevent-concurrent-logins).** * Deters members/subscribers from sharing their accounts with others * Hardens security by destoying old sessions automatically * Prompts old sessions to login again if they want to continue * Ideal for membership sites and web applications **Important:** If you plan to network-activate this plugin on a multisite network, please install the [Proper Network Activation](https://wordpress.org/plugins/proper-network-activation/) plugin _beforehand_. **Development of this plugin is done [on GitHub](https://github.com/fjarrett/prevent-concurrent-logins). Pull requests welcome. Please see [issues reported](https://github.com/fjarrett/prevent-concurrent-logins/issues) there before going to the plugin forum.** ## 常見問題集 Where are the options for this plugin? This plugin does not have a settings page. Simply put, I don’t like bloating my plugins with a bunch of options. Instead, I try to develop functionality using the 80/20 principle so that for 80% of use cases you all you need to do is activate the plugin and it “just works”. For the other 20% of you who want things to behave differently there are hooks available in the plugin so you can customize default behaviors. Can I still allow concurrent logins for certain users? Yes, simply add this code to your theme’s `functions.php` file or as an [MU plugin](https://codex.wordpress.org/Must_Use_Plugins): ``` function my_pcl_whitelist_user_ids( $prevent, $user_id ) { $whitelist = array( 1, 2, 3 ); // Provide an array of whitelisted user IDs return in_array( $user_id, $whitelist ) ? false : $prevent; } add_filter( 'pcl_prevent_concurrent_logins', 'my_pcl_whitelist_user_ids', 10, 2 ); ``` Or this code to bypass users with certain roles: ``` function my_pcl_whitelist_roles( $prevent, $user_id ) { $whitelist = array( 'administrator', 'editor' ); // Provide an array of whitelisted user roles $user = get_user_by( 'id', absint( $user_id ) ); $roles = ! empty( $user->roles ) ? $user->roles : array(); return array_intersect( $roles, $whitelist ) ? false : $prevent; } add_filter( 'pcl_prevent_concurrent_logins', 'my_pcl_whitelist_roles', 10, 2 ); ``` ## 使用者評論 ![](https://secure.gravatar.com/avatar/d17c9efc6a6698306da99f672f9f2e2babafdff192b60c68bcc10e02f80355c8? s=60&d=retro&r=g) ### 󠀁[Awesome!!](https://wordpress.org/support/topic/awesome-8521/)󠁿 [mcostam1985](https://profiles.wordpress.org/mcostam1985/) 2021 年 2 月 2 日 Your awesome man! This plugin with your functions.php code works perfectly. Thank you so much for the time spent working on it. ![](https://secure.gravatar.com/avatar/9960a2d68d7837b4efea4bed323193efe05caaa22d0a1843700bf1d2bbbb0cd1? s=60&d=retro&r=g) ### 󠀁[This plugin is great and has not required any update for 4 years](https://wordpress.org/support/topic/great-11871/)󠁿 [nddao](https://profiles.wordpress.org/nddao/) 2020 年 8 月 13 日 THIS PLUGIN IS SIMPLE AND PERFECT THAT THE AUTHOR HAS NOT NEED TO UPDATE ANYTHING SINCE LAST 4 YEARS. I had to create an account just to give this plugin a 5-star rating and let people know that it works perfectly. I was looking for something to prevent users from concurently login and found this plugin. However, the age of this plugin and the number of active installation (1000+ at this time) made me skip it. The information that this plugin was updated 4 years ago further drove me away. I decided to install another plugin, which made me crazy because it kept log me out every couple minutes. Then I removed the mentioned plugin and gave this plugin a try, and it works as much as I expect. ![](https://secure.gravatar.com/avatar/f6a2a31ab79528bd5b9e45c9f6afbe02de021f073f200270c274de4ea8c60f91? s=60&d=retro&r=g) ### 󠀁[GREAT!](https://wordpress.org/support/topic/great-10557/)󠁿 [César](https://profiles.wordpress.org/easytomake/) 2019 年 12 月 12 日 I tried it on my easytomake online course site, and used 3 browsers. Disconnect the others! Thank you CÉSAR ![](https://secure.gravatar.com/avatar/f892702cbf3052de058ab4d493b8a7423080c1df323c3c9c152b84261d3e77d1? s=60&d=retro&r=g) ### 󠀁[Great!](https://wordpress.org/support/topic/great-8773/)󠁿 [Eder Tuffic](https://profiles.wordpress.org/eder-tuffic/) 2018 年 11 月 12 日 It was exactly what I needed for my course. Thank you! ![](https://secure.gravatar.com/avatar/cc591a741df3cc47bdd270c8e38de35ba572115b455fdf8a080291a7c91d83b6? s=60&d=retro&r=g) ### 󠀁[Muito bom](https://wordpress.org/support/topic/muito-bom-398/)󠁿 [uilianv](https://profiles.wordpress.org/uilianv/) 2017 年 4 月 5 日 1 則留言 Faz o que promete, resolve o problema, sem nenhum requinte desnecessário ![](https://secure.gravatar.com/avatar/0892a203e80a80876d2e78fb0405c8a2cca9154ada06d051706d7af4e41cef63? s=60&d=retro&r=g) ### 󠀁[Super!](https://wordpress.org/support/topic/super-738/)󠁿 [Vasily](https://profiles.wordpress.org/vdvortsov/) 2017 年 3 月 18 日 Love the functionality. Exactly what i need now. Thank you very much! [ 閱讀全部 17 則使用者評論 ](https://wordpress.org/support/plugin/prevent-concurrent-logins/reviews/) ## 參與者及開發者 以下人員參與了開源軟體〈Prevent Concurrent Logins〉的開發相關工作。 參與者 * [ Frankie Jarrett ](https://profiles.wordpress.org/fjarrett/) [將〈Prevent Concurrent Logins〉外掛本地化為台灣繁體中文版](https://translate.wordpress.org/projects/wp-plugins/prevent-concurrent-logins) ### 對開發相關資訊感興趣？ 任何人均可[瀏覽程式碼](https://plugins.trac.wordpress.org/browser/prevent-concurrent-logins/)、 查看 [SVN 存放庫](https://plugins.svn.wordpress.org/prevent-concurrent-logins/)， 或透過 [RSS](https://plugins.trac.wordpress.org/log/prevent-concurrent-logins/?limit=100&mode=stop_on_copy&format=rss) 訂閱[開發記錄](https://plugins.trac.wordpress.org/log/prevent-concurrent-logins/)。 ## 變更記錄 #### 0.4.0 – October 16, 2015 * Official support for WordPress 4.3 Props [fjarrett](https://github.com/fjarrett) #### 0.3.0 – May 4, 2015 * Action hooks now available after sessions are destroyed for logging purposes [(#4)](https://github.com/fjarrett/prevent-concurrent-logins/issues/4) Props [fjarrett](https://github.com/fjarrett) #### 0.2.0 – January 28, 2015 * Destroy old sessions for all users upon activation Props [fjarrett](https://github.com/fjarrett), [chuckreynolds](https://github.com/chuckreynolds) #### 0.1.1 – January 2, 2015 * Added filter to allow certain users to have concurrent sessions when necessary Props [fjarrett](https://github.com/fjarrett), [nutsandbolts](https://github.com/nutsandbolts) #### 0.1.0 – December 31, 2014 * Initial release Props [fjarrett](https://github.com/fjarrett) ## 中繼資料 * 版本 **0.4.0** * 最後更新 **10 年前** * 啟用安裝數 **900+** * WordPress 版本需求 ** 4.1 或更新版本 ** * 已測試相容的 WordPress 版本 **4.6.30** * 語言 * [English (US)](https://wordpress.org/plugins/prevent-concurrent-logins/) * 標籤: * [login](https://tw.wordpress.org/plugins/tags/login/)[membership](https://tw.wordpress.org/plugins/tags/membership/) [security](https://tw.wordpress.org/plugins/tags/security/)[sensei](https://tw.wordpress.org/plugins/tags/sensei/) [users](https://tw.wordpress.org/plugins/tags/users/) * [進階檢視](https://tw.wordpress.org/plugins/prevent-concurrent-logins/advanced/) ## 評分 5 星，滿分為 5 星 * [ 17 個 5 星使用者評論 ](https://wordpress.org/support/plugin/prevent-concurrent-logins/reviews/?filter=5) * [ 0 個 4 星使用者評論 ](https://wordpress.org/support/plugin/prevent-concurrent-logins/reviews/?filter=4) * [ 0 個 3 星使用者評論 ](https://wordpress.org/support/plugin/prevent-concurrent-logins/reviews/?filter=3) * [ 0 個 2 星使用者評論 ](https://wordpress.org/support/plugin/prevent-concurrent-logins/reviews/?filter=2) * [ 0 個 1 星使用者評論 ](https://wordpress.org/support/plugin/prevent-concurrent-logins/reviews/?filter=1) [Your review](https://wordpress.org/support/plugin/prevent-concurrent-logins/reviews/#new-post) [查看全部使用者評論](https://wordpress.org/support/plugin/prevent-concurrent-logins/reviews/) ## 參與者 * [ Frankie Jarrett ](https://profiles.wordpress.org/fjarrett/) ## 技術支援 使用者可在技術支援論壇提出意見反應或使用問題。 [檢視技術支援論壇](https://wordpress.org/support/plugin/prevent-concurrent-logins/)