Getting users who registered 360 days from current date

As per the title, what I want to do is run a custom query that (using WP-Cron) will run once a day to check for users who registered exactly 360 days before the current date (don’t need time, just date) and gather their ID. I have this:

global $wpdb;
$sql = $wpdb->prepare(
    "SELECT * FROM {$wpdb->users} 
     WHERE {$wpdb->users}.user_registered = CURRENT-DATE-MINUS-360-DAYS";
);
$userdata = HOW-DO-I-GET-THE-RESULTS-IN-AN-ARRAY

Where the bit in caps represents the bit I have no idea what to do 🙂 Any help much appreciated.

Answers:

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Method 1

I peeked into the WP_User_Query class and it supports a WP_Date_Query query on the user registration date.

So we could use:

$query = new WP_User_Query( $args );

or simply:

$users = get_users( $args );

where:

$args = [
    'fields'     => 'ID',
    'number'     => 8,
    'date_query' => [
        [ 'before' => '359 days ago midnight' ],
        [ 'after'  => '360 days ago midnight', 'inclusive' => true ],
   ] 
];

This generates the following SQL query (expanded view):

SELECT wp_users.ID 
    FROM wp_users 
    WHERE 1=1 
        AND ( 
                wp_users.user_registered >= '2014-08-10 00:00:00' 
            AND       
                wp_users.user_registered < '2014-08-11 00:00:00' 
        ) 
    ORDER BY user_login ASC 
    LIMIT 10;

where today is 2015-08-05.

It looks like we should update the Codex on get_users() function, regarding the date_query argument.

Method 2

Use

$wpdb->get_results("SELECT *, (DATEDIFF(NOW(),user_registered)) AS daydiff FROM {$wpdb->users} WHERE 'daydiff' = 360");

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0