create random ID for Users

@abdullahalsalim

You can try this code snippet:

https://docs.ultimatemember.com/article/1683-how-to-generate-a-unique-account-id

@adrianortiz80

How did you install the code snippet?

@adrianortiz80

I tested the code snippet and it generated a custom ID when a new user registered.
Existing old users have a blank custom ID not being displayed at the Profile page.

@adrianortiz80

You can try this code snippet.
Install into your active theme’s functions.php file.

If you have made any changes to the first code snippet you must do the same changes in this code snippet for this line like the C- or the number 5:

$unique_account_id = 'C-' . str_pad( $user->ID, 5, '0', STR_PAD_LEFT );

After installing this code snippet display one profile page at your site and your new custom ID’s will be generated for your old users.

When the page displays after a while remove the code snippet from functions.php file.

add_action( "init", "um_update_unique_account_id" );

function um_update_unique_account_id() {

    $users = get_users();
    foreach ( $users as $user ) {
        um_fetch_user( $user->ID );
        $unique_account_id = um_user( 'um_unique_account_id' );
        if( empty( $unique_account_id )) {
            $unique_account_id = 'C-' . str_pad( $user->ID, 5, '0', STR_PAD_LEFT );
            update_user_meta( $user->ID, "um_unique_account_id", $unique_account_id );
        }
        UM()->user()->remove_cache( $user->ID );        
    }
}

@adrianortiz80

The second snippet will execute when you display an UM page like a Profile page.
During creation of the page content all old users will be updated with their ID.

@adrianortiz80

Have you got ID for old users now?

@adrianortiz80

1. Install the second code snippet in your active theme’s functions.php file.

2. With your browser display a user profile page.

3. When UM is preparing to display this profile page the second code snippet is also being executed by WordPress.

4. Second code snippet will read all your old users and assign the unique custom ID to them and updating the database.

5. When you get the profile page to your browser display the second code snippet is ready with updating old users.

6. Remove second code snippet, it’s not needed any more.

7. Look at an old user profile where you have included the um_unique_account_id meta-key value in the profile page.