Is there a way to simplify this code?

[imgrooot]

Say I am running multiple contests at the same time. Each contest may have a different end date. One contest might run for a day, while the other one might run for 5 days. Below is the code done my way. I was wondering how you can improve it to make it more efficient?

$current_date = date('Y-m-d H:i:s');

$find_contest = $db->prepare("SELECT days_count, date_started FROM contests WHERE status = :status");
$find_contest->bindValue(':status', 1);
$find_contest->execute();
$result_contest = $find_contest->fetchAll(PDO::FETCH_ASSOC);
if(count($result_contest) > 0) {
  foreach($result_contest as $row) {
    $days_count      =	$row['days_count']; // NUMBER OF DAYS THE CONTEST IS RUNNING
    $date_started    =	$row['date_started']; // START DATE FOR THE CONTEST

    $date_1 = DateTime::createFromFormat('Y-m-d H:i:s',$date_started);
    $date_1->modify('+1 day');
    $end_date_1 = $date_1->format('Y-m-d H:i:s');

    $date_2 = DateTime::createFromFormat('Y-m-d H:i:s',$date_started);
    $date_2->modify('+2 days');
    $end_date_2 = $date_2->format('Y-m-d H:i:s');

    $date_3 = DateTime::createFromFormat('Y-m-d H:i:s',$date_started);
    $date_3->modify('+3 days');
    $end_date_3 = $date_3->format('Y-m-d H:i:s');

    if($days_count == 1) {

      if($current_date > $end_date_1 AND $current_date < $end_date_2) {

        $day            = 1;
        $end_date       = $end_date_1;
        require 'run-contest.php';

      }

    } else if($days_count == 2) {

      if($current_date > $end_date_1 AND $current_date < $end_date_2) {

        $day            = 1;
        $end_date       = $end_date_1;
        require 'run-contest.php';

      } else if($current_date > $end_date_2 AND $current_date < $end_date_3) {

        $day            = 2;
        $end_date       = $end_date_2;
        require 'run-contest.php';

      } else {}

    } else {}

  }
}

 

[benanamen]

A minor comment.

This line

if(count($result_contest) > 0) 

Can simply be

if($result_contest) 

The return value for fetchALL is either an array with results or an empty array, or false on failure. There is no need to count anything. The default truthy check of the if is all you need.

 

 

 

[Barand]

Something like this, perhaps

TEST DATA

+----+-----------+--------------+------------+
| id | name      | date_started | days_count |
+----+-----------+--------------+------------+
|  1 | Contest 1 | 2019-04-16   |          1 |
|  2 | Contest 2 | 2019-04-15   |          3 |
|  3 | Contest 3 | 2019-04-14   |          5 |
|  4 | Contest 4 | 2019-04-14   |          2 |
|  5 | Contest 5 | 2019-04-15   |          1 |
+----+-----------+--------------+------------+

QUERY

SELECT name
     , date_started as startdate
     , date_started + INTERVAL days_count-1 DAY as enddate
     , datediff(curdate(), date_started) + 1 as daynum
FROM contests
WHERE curdate() BETWEEN date_started AND date_started + INTERVAL days_count-1 DAY
ORDER BY date_started;

RESULTS

+-----------+------------+------------+--------+
| name      | startdate  | enddate    | daynum |
+-----------+------------+------------+--------+
| Contest 3 | 2019-04-14 | 2019-04-18 |      3 |
| Contest 2 | 2019-04-15 | 2019-04-17 |      2 |
| Contest 1 | 2019-04-16 | 2019-04-16 |      1 |
+-----------+------------+------------+--------+

 

[imgrooot]

15 hours ago, Barand said:

Something like this, perhaps

TEST DATA

+----+-----------+--------------+------------+
| id | name      | date_started | days_count |
+----+-----------+--------------+------------+
|  1 | Contest 1 | 2019-04-16   |          1 |
|  2 | Contest 2 | 2019-04-15   |          3 |
|  3 | Contest 3 | 2019-04-14   |          5 |
|  4 | Contest 4 | 2019-04-14   |          2 |
|  5 | Contest 5 | 2019-04-15   |          1 |
+----+-----------+--------------+------------+

QUERY

SELECT name
     , date_started as startdate
     , date_started + INTERVAL days_count-1 DAY as enddate
     , datediff(curdate(), date_started) + 1 as daynum
FROM contests
WHERE curdate() BETWEEN date_started AND date_started + INTERVAL days_count-1 DAY
ORDER BY date_started;

RESULTS

+-----------+------------+------------+--------+
| name      | startdate  | enddate    | daynum |
+-----------+------------+------------+--------+
| Contest 3 | 2019-04-14 | 2019-04-18 |      3 |
| Contest 2 | 2019-04-15 | 2019-04-17 |      2 |
| Contest 1 | 2019-04-16 | 2019-04-16 |      1 |
+-----------+------------+------------+--------+

 

 

Yes this is what I was looking for. I'll give it a shot.

Thanks you.