Comparing timestamp from database to last 6 months

Question

I'm using laravel and for some reason my logic here isn't applying correctly.

The if statement here should take the results from the database and see if the created_at timestamp is within the last 6 months. If so, I have a css class for 'newCust' below. If the created_at timestamp is past 6 months, it should not be applied.

I'm using subMonth to get the last 6 months but it seems like it's not applying because now it's applying the CSS class to all rows so I'm wondering if my date comparison is off here.

$d->createdAt = new \DateTime($d->created_at);  // created_at is full timestamp (2011-01-01 00:00:00)
$deadline = Carbon::now()->subMonths(6)->format('Y-m-d H:i:s');
if($d->createdAt > $deadline){  // I'm trying to say here that if the created_at timestamp is within the last 6 months, then apply following logic
$d->call_status = 'newCust';
}

Answer 1

Using just plain old DateTime this will do what you want

$createdAt = new \DateTime('2017-11-17 00:00:00');
echo $createdAt->format('d/m/Y H:i:s') . PHP_EOL;

$deadline = new \DateTime();
$deadline->sub( new DateInterval('P6M') );
echo $deadline->format('d/m/Y H:i:s') . PHP_EOL;

if ($createdAt > $deadline) {
    echo 'YES';
}else{
    echo 'NO';
}

Adjust the date used by $createdAt to test it.