Want to save only year from timestamp in database

Question

I want to save only year in my database as date_created with type currenttimestamp

I'm getting the value of the year from a select html. After getting the value, i will transfer it to the controller

Here's my code

$registered_year = sanitize($this->input->post('registered_year'));
$registered_year2 =". $registered_year .-00-00 00:00:00";
$app_type = 1;
$ref_no = generate_reference_number();

$this->Model->dealer_renew_save($account_id,$req_id,$ref_no,$app_type,$registered_year2);

$data = [
         'success'=>1,
         'message'=> 'Application Successfully Renewed.'
         ];

generate_json($data);

For example, I chose 2018 then I want it to save 2018-00-00 00:00:00

it saves 0000-00-00 00:00:00

What seems to be the problem?

Answer 1

The problem is your date is this

$registered_year2 =". $registered_year .-00-00 00:00:00"; 

See if $registered_year=2019 then you have . 2019 .-00-00 00:00:00 . 2019 .-00-00 00:00:00 with dots. Your mixing concatenation up with interpolation. And MySQL date time does not recognize that as a valid date.

For example, i chose 2018 then i want to save it 2018-00-00 00:00:00

Well to be sure, 2018-00-00 00:00:00 is not . 2019 .-00-00 00:00:00 . 2019 .-00-00 00:00:00

It's a simple typo.

Further

2018-00-00 00:00:00 is not a valid date. So that wont work. But lets look at this:

want to save year only in my database date_created with type currenttimestamp

Datetime is not a timestamp. And if you need the year from a datetime field you can use YEAR(datetime_field) in both the select and where parts of the query.

If you need it from a timestamp, you can cast the timestamp to a DateTime

   YEAR(FROM_UNIXTIME(timestamp_field))

So if you save the current datetime (NOW()) even though I prefer doing this in PHP because the DB has it's own timezone setting separate from PHP. Then you can just do that when you need the year.

Cheers.

Answer 2

There are two things to chage. 1st as per the ArtisticPhoenix answer

$registered_year2 = $registered_year . "-00-00 00:00:00";

make sure that date is 2018-00-00 00:00:00

Another thing is that change your field type from timestamp to datetime