Schema::table('posts', function (Blueprint $table) { $table->unsignedBigInteger('user_id'); $table->foreign('user_id')->references('id')->on('users');
});
OR
Schema::table('posts', function (Blueprint $table) { $table->foreignId('user_id')->constrained();
});

To rollback one step:
php artisan migrate:rollback
To rollback multiple steps:
php artisan migrate:rollback --step=[x]
To drop all tables and reload all migrations:
php artisan migrate:fresh

use Carbon\Carbon;
$current_date_time = Carbon::now()->toDateTimeString(); // Produces something like "2019-03-11 12:25:00"

// To drop a column, use the dropColumn method on the schema builder.
// Before dropping columns from a SQLite database, you will need to add
// the doctrine/dbal dependency to your composer.json file and run the
// composer update command in your terminal to install the library:
Schema::table('users', function (Blueprint $table) { $table->dropColumn('votes');
});

use Carbon\Carbon;
$current_timestamp = Carbon::now()->timestamp; // Produces something like 1552296328

$reportDate = date_create(date('Y-m-d'));
$timestamp = strtotime(date_format($reportDate, 'Y-m-d'));

public function getDateStartAttribute($value)
{ return Carbon::parse($value)->format('Y-m-d\TH:i');
}
public function getDateEndAttribute($value)
{ return Carbon::parse($value)->format('Y-m-d\TH:i');
}

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