After logging in in WordPress, close the login page and set columns invisible to users, after logging in to WordPress_PHP tutorial

After logging in in WordPress, close the login page and set columns invisible to users. After logging in to WordPress

Close the login page after the user logs in
The default login page of WordPress is: http://WP directory/wp-login.php. After logging in, it will automatically jump to: http://WP directory/wp-admin. Now the question is, if the user has logged in, but it opens the wp-login.php page, what will happen? The answer is that WordPress will not do any processing and will still directly display the login window for you:

Facing such a cold login box, users will be confused. Didn’t I just log in? Why do I need to enter my username and password? Therefore, after the user logs in, we should not let the user see the login box again. There are two ways to solve this problem:

Remove login link

Make sure the link to wp-login.php no longer appears on the page. If the user is not logged in, we can prompt like this on the webpage:

After the user logs in, we will delete the login and registration links above and replace them with:

This not only allows users to know at a glance whether they have logged in, but also prevents them from accidentally clicking wp-login.php to enter the login interface. PHP programming can be implemented by simply using WordPress's is_user_logged_in() function to determine whether the user is logged in.

wp-login.php makes a jump

Sometimes, after logging in, users will accidentally click on the wp-login.php login link, such as the browser's address bar. We should take some remedial measures at this time, and don't let the login box be displayed in front of the user. The method introduced here is that when the user has logged in but opens the wp-login.php link, we will let him jump to the backend homepage wp-admin. The specific method is to add the following php code to the functions.php of the current theme. :

function redirect_logged_user() {
 if(is_user_logged_in() && (empty($_GET['action']) || $_GET['action'] == 'login')) {
  wp_redirect( admin_url() );
  exit;
 }
}
add_action( 'login_init', 'redirect_logged_user' );

Create custom columns that are invisible to users
If you are a plug-in or theme developer, you should often use custom columns (or custom fields) to store relevant parameters of your plug-in or theme. Interestingly, in the article editing page or When using the_meta() template function, WordPress will not display custom columns whose names begin with _ (underscore).

For some custom columns that we don’t want users to see, let alone modify, we can use this technique to not only make the custom columns on the article editing page simpler, but also prevent users from seeing unfamiliar custom columns. I was confused about defining the columns and even modified them randomly. Here is a usage example:

<&#63;php add_post_meta( 68, '_ludou', '露兜博客', true ); &#63;>

In this way, the article with ID 68 is added with the name _ludou and the value is the only custom column of Pandan Blog, and the user cannot see it on the article editing page. Under normal circumstances, we may use it like this, so that the ludou field can be seen in the customized column of the article editing page:

<&#63;php add_post_meta( 68, 'ludou', '露兜博客', true ); &#63;>

In addition, when the value of the custom column is an array, the column is not visible to the user on the article editing page, even if the name of the custom column is not underlined.

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