rcp_show_subscription_level

Note: This is part of the developer docs and is considered custom code.
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This filter determines whether or not a subscription level should appear in the selection list in the  [register_form] shortcode.

Parameters:

• $show (bool) - Whether or not to show the level (true or false).
• $level_id (int) - ID of the level currently being tested.
• $user_id (int) - ID of the user who's visiting the registration form (0 if not logged in).

Example:

function ag_rcp_show_subscription_level( $show, $level_id, $user_id ) {
    // Don't show level #1 if the current user is on level #3.
    if ( 1 == $level_id && 3 == rcp_get_subscription_id( $user_id ) ) {
        $show = false;
    }

    return $show;
}

add_filter( 'rcp_show_subscription_level', 'ag_rcp_show_subscription_level', 10, 3 );