如何遍历数据库中的所有用户并应用角色

Question

I am trying to create a loop that loops through each users data in my events table in the database and applies the role of suspended if the amount of rows returned is a multiple of 12.

Here's what I have created but it doesn't seem to work;

<?php
    global $wpdb;

    for( $x = 1; $x < 300; $x++ ){
        $count = $wpdb->get_results( 'SELECT * FROM wp_events WHERE user_id = "'.$x.'"' ); 

        if ($count % 12 == 0){ 
            $user = new WP_User( $x );
            $user->add_role( 'suspended' );
        }
    }
?>

Answer 1

The method get_results returns an array. Therefore, you are using an array to calculate the modulo, so it's always going to return 1 .

To fix this, you can change your condition to:

if (count($count) % 12 == 0) {
    // Your code...
}

For more information: https://developer.wordpress.org/reference/classes/wpdb/get_results/