PHP contact form not sending data to mysql database

I’m a brand new beginner in this… This is my PHP, I’ve got it working to send the email, however, I’m struggling to connect it to the database. I’d welcome any pointers at all! Thanks so much! 🙂

<?php
if(isset($_REQUEST['action']) && $_REQUEST['action'] == 'sendEmail')
{
    $to = 'test@test.co.uk';
    $subject = 'websitecontactform';
    $send_arr = array();    
    
    $headers = "MIME-Version: 1.0" . "\r\n";
    $headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";
    $headers .= "From: <".$_REQUEST['con_email'].">" . "\r\n";
    $headers .= "Cc: ".$_REQUEST['con_email'] . "\r\n";
    
    $message = "First Name : ".$_REQUEST['fname']. "<br />";
    $message .= "Last Name : ".$_REQUEST['lname']. "<br />";
    $message .= "Email : ".$_REQUEST['con_email']. "<br />";
    $message .= "Phone : ".$_REQUEST['con_phone']. "<br />";
    $message .= "Country : ".$_REQUEST['con_country']. "<br />";
    $message .= "Message : ".$_REQUEST['con_message']. "<br />";
    
    if (mail($to,$subject,$message,$headers) ){
        
        $send_arr['response'] = 'success';
        $send_arr['message'] = 'Your message has been sent.';
        
        } else{
            
        $send_arr['response'] = 'error';
        $send_arr['message'] = "You message couldn't be sent. Please try later!";
            
            }
    echo json_encode($send_arr);
    exit;
    
}

?>

>Solution :

you must be clear with your question, i cant see any database query.

• First connect to a database
• Then write insert query to insert data.