Obfuscate WordPress user data

obfuscate-wp-users.php

<?php
/**
 * This script obfuscates WordPress user data for defined user roles.
 */

global $wpdb;

// This example obfuscates all user data for WooCommerce customers.
$roles = [
    'customer',
];

$users = get_users( [ 'role__in' => $roles ] );

foreach ( $users as $idx => $user ) {
        $user_hash   = md5( uniqid( '', true ) );
        $random_email = 'anonymous-' . $user_hash . '@somerandomeemail.com';
        $name         = 'anonymous';
        $user_data = [
            'user_email'    => $random_email,
            'nickname'      => $name . $idx,
            'display_name'  => $name . ' ' . $idx,
            'user_nicename' => $name . $idx,
            'first_name'    => ucfirst( $name ),
            'last_name'     => $idx,
            'user_login' => 'anonymous' . $user_hash,
        ];
        // Update user data.
        $wpdb->update( $wpdb->users, $user_data, [ 'ID' => $user->ID ] );
}

// Flush the cache after direct database manipulations.
wp_cache_flush();

This script obfuscates WordPress user data for defined user roles. Making users anonymous might come handy for development environments or other situations where user data should be obfuscated to follow GDPR privacy and data protection requirements.

Easiest way to execute the script is to run it with WP-CLI:

$ wp eval-file obfuscate-wp-users.php