insert query syntax error

include ('../config.php');

if (isset($_POST['submit']))
{
    $fullName =$_POST['fullName'];
    $email = $_POST['email'];
    $mobile = $_POST['mobile'];
    $dob = $_POST['dob'];
    $ddlType = $_POST['ddlType'];    
    $pincode = $_POST['pincode'];
    $address = $_POST['address'];
    $ddlState = $_POST['ddlState'];    
    $query = $_POST['query'];
//    
//    $from = new DateTime($dob);
//    $to   = new DateTime('today');
//    echo "age = ".$from->diff($to)->y; 
//
//    
    
    echo $insertQuery = "INSERT INTO `customerdetail`( fullName, email, dob, mobile, address, state, pincode, InsurenceType, query) VALUES ('$fullName','$email',$dob,$mobile,'$address','$ddlState',$pincode,'$ddlType', '$query')"; 
    
    $insertCmd = $CS->query($insertQuery);
    print_r($insertCmd);
    
    if(!$insertCmd){
        echo 'data is not submited';
    }
 else {
    echo 'data is  submited';
    }
    
    
}