how to enable timestamp laravel model code example

Example 1: laravel model without timestamps

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Post extends Model
{
    public $timestamps = false;

    //
}

Example 2: timestamp in model laravel

$user = User::find(1);
$user->profile_views_count = 123;
$user->timestamps = false;
$user->save();