Laravel / Carbon - Return diffForHumans() in the shorter format like instagram

Have my API returning diffForHumans() on my created at date:

public function getCreatedAtAttribute($value)
{
    return \Carbon\Carbon::createFromFormat('Y-m-d H:i:s', $value)->diffForHumans();
}

This creates e.g.

1 day ago
6 days ago
3 weeks ago
1 month ago

But What I wish for is to have the same as Instagram where it returns simply:

1d
6d
3w
1m

Is there a way to do this apart from perhaps splitting the returned value by spaces and taking the first letter of the second word and the number?

EDIT: One of those lovely occasions where typing out a question solves it for you.

This is what I just came up with quick. Seems to work but open to any other solutions.

    public function getCreatedAtAttribute($value)
    {
        $diffForHumans = \Carbon\Carbon::createFromFormat('Y-m-d H:i:s', $value)->diffForHumans();
        $data = explode(" ", $diffForHumans);

        $number = $data[0];
        $denominator = substr($data[1], 0, 1);
        return $data[0] . $denominator;
    }

via Chebli Mohamed