Sindbad~EG File Manager

<?php

namespace MailOptin\Core;

final class Core
{
    const campaign_log_table_name = 'mo_campaign_log';
    const optin_campaigns_table_name = 'mo_optin_campaigns';
    const optin_campaign_meta_table_name = 'mo_optin_campaignmeta';
    const campaign_log_meta_table_name = 'mo_campaign_logmeta';
    const conversions_table_name = 'mo_conversions';
    const email_campaigns_table_name = 'mo_email_campaigns';
    const email_campaign_meta_table_name = 'mo_email_campaignmeta';

    public function __construct()
    {
        Base::get_instance();
    }

    public static function get_instance()
    {
        static $instance = null;

        if (is_null($instance)) {
            $instance = new self();
        }

        return $instance;
    }

    public static function init()
    {
        Core::get_instance();

        do_action('mailoptin_loaded');
    }
}