WordPress settings only registered users can browse specific content

We add a custom field: User_only, if this value is not zero, this log or page is only for registered users to browse, and then through the the_content to control the content display, so simple and flexible settings specific to which article or page is only registered users browsing. The detailed code is as follows:

The code is as follows

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<?php Add_filter (' the_content ', ' post_user_only '); function Post_user_only ($text) { Global $post; $user _only = Get_post_meta ($post->id, ' user_only ', true); if ($user _only) { Global $user _id; if (! $user _id) { $redirect = Get_permalink ($post->id); $text = ' This content is limited to member browsing, please <a href= '. Wp_login_url ($redirect). ' > Login </a>! '; } } return $text; } ?>

Copy the top tape into a file and upload it to the plugin directory, activate it