Is this OOD implemented correctly

I am learning OO SOLID principles and design patterns and want some practice on it so I get the one problem from my ongoing project and try to design it. please check is it implemeted correctly or it's over-engineered or I implement it poorly. Your response is most important.

Problem I have to manage the sms and email campaigns in one system. I meant to say storing it in database and retrieving it etc.

So I think there will be something specific to the Campaign like created date status etc. so I have make the class named campaignmodel which is responsible for some common functions releted to campaign

Class CampaignModel
{
    public function save($data)
    {
        // add campaign specific data
        // save the campaign.

    }

    public function get()
    {
        // select the row from database and return it.

    }
}

then I make smscampaign and email campaign

class SMSCampaignModel extends CampaignModel
{
    public function save($data)
    {
        // add sms specific data and
        parent::save($data);
    }

    public function gets()
    {
        //fire the query to get the sms campaigns and returns it.
    }
}

class EmailCampaignModel extends CampaignModel
{
    public function save($data)
    {
        // add email  specific data
        parent::save($data);
    }

    public function gets()
    {
        //fire the query to get the email campaigns and returns it.
    }

}

Now every campaign will have recipents and we have to store each recipents status like he opens mail or mail/sms sent or failed etc. I think we will send the campaigns with many emails or numbers so I decided to create different database table for storing such details such as sms_campaign_log, email_campaign_log etc. I have created the interface for it

interface CampaignLogs
{
    function insert_log();
    function get_details();
}

class SmsCampaignLogs implements CampaignLogs
{
    public function insert_log($data)
    {
        // get the number and status save it into the sms logs table.
    }

    public function get_details($campagin_id)
    {
        // get the logs from campagin table and return it.
    }
}

class EmailCampaignLogs implements CampaignLogs
{
    public function insert_log($data)
    {
        // get the number and status save it into the email logs table.
    }

    public function get_details($campagin_id)
    {
        // get the logs from campagin table and return it.
    }
}

and lastly I think now I should use strategy pattern to implement it(I doesn't know is it correct or not).

class Campaign
{
    private $log;
    private $campaign_type;
    public function __construct($campaign, $logger)
    {
        $this->campaign_type = $campaign;
        $this->log  = $logger;
    }

    public function save($data)
    {
        $this->campagin_type->save();

    }
    public function gets()
    {
        $this->campaign_type->gets();
    }

    public function log($data)
    {
        $this->log->insert_log($data);
    }

    public function get_campaign_details($campaign_id)
    {
        $this->log->get_details($campaign_id);
    }
}

now Implementation code.

$campaign = new SmCampaignModel();
$logger = new SmsCampaignLogs();
$c = new Campaign($campagin,$logger);
$c->save($data);
$c->get($campaign_id);
$c->get_campaing_details();

Then I think is strategy patter needed. simply I can implement

    $campaign = new SmCampaignModel();
    $logger = new SmsCampaignLogs();
    $campaign->save($data);
    $campaign->get($campaign_id);
    $logger->get_campaing_details($campaign_id);

So I am now totally confused. I want to help you to see that is SOLID principles correctly implemented in this design and strategy needed or not.