从DB1（非wp数据库）获取所有数据并保存到$array.functions.php 用于将用户插入DB2（wordpress数据库）

function cxg_wp_insert_user() {
    foreach ( $array as $arr ) {
        $user_data = array(
        \'ID\' => \'\',
        \'user_pass\' => wp_generate_password(),
        \'user_login\' => $loginName,
        \'user_nicename\' => $nicename,
        \'user_url\' => \'\',
        \'user_email\' => $eMail,
        \'display_name\' => $displayName,
        \'nickname\' => \'$nickname,
        \'first_name\' => $firstName,
        \'role\' => get_option(\'default_role\')
        }
    );
    $user_id = wp_insert_user( $user_data );
}
add_action( \'admin_init\', \'cxg_wp_insert_user\' );
 3. After updating disable this function