Question

如何使用Carbon在PHP中创建日期字符串到日期对象？

$minTime = DB::table('order') 
            ->select('order_creation_date', 'restaurant_id')
            ->where('restaurant_id', '=', '70')
            ->orderBy('order_creation_date', 'asc')
            ->first();

            $m = $orderDay -> month;
            $d = $orderDay -> day;
            $y = $orderDay -> year;

    $y = (int)$y;
    $d = (int)$d;
    $m = (int)$m;

    $orderDay = $minTime -> order_creation_date;
    var_dump($orderDay);

错误：

Trying to get property of non-object

字符串的正常值：

string(19) "2016-02-05 14:51:30"

任何想法如何解决？我想我需要make string to date对象。谢谢。

Answer 1

在$dates模型中使用Order属性：

protected $dates = ['order_creation_date'];

Answer 2

您的错误肯定在第2行

更改代码的顺序：

$minTime = DB::table('order') 
        ->select('order_creation_date', 'restaurant_id')
        ->where('restaurant_id', '=', '70')
        ->orderBy('order_creation_date', 'asc')
        ->first();

$orderDay = $minTime -> order_creation_date;

        $m = $orderDay -> month;
        $d = $orderDay -> day;
        $y = $orderDay -> year;

$y = (int)$y;
$d = (int)$d;
$m = (int)$m;


var_dump($orderDay);

或使用DB facade访问日期时，它可能不会返回Carbon实例。试试......：

$orderDay = Carbon::createFromFormat("Y-m-d H:i:s",$minTime -> order_creation_date);

或者，您更应该在$dates模型中使用Order属性..

protected $dates = ['order_creation_date'];

字符串到日期对象PHP Laravel Carbon

2 个答案: