如何从laravel中的数组中获取键名

Question

我想获取我的表的列名。当我使用模型::all();

Users::all();

Illuminate\Database\Eloquent\Collection Object 
(
    [items:protected] => Array
        (
            [0] => Users Object
                (
                    [table:protected] => users
                    [hidden:protected] => Array
                        (
                            [0] => password
                            [1] => remember_token
                        )

                    [fillable] => Array
                        (
                        )

                    [connection:protected] => 
                    [primaryKey:protected] => id
                    [perPage:protected] => 15
                    [incrementing] => 1
                    [timestamps] => 1
                    [attributes:protected] => Array
                        (
                            [id] => 1
                            [first_name] => Mohammed Saqib
                            [last_name] => Rajput
                            [email] => rajput.saqib@hotmail.com
                            [dob] => 2015-06-18 00:00:00
                            [mobile] => 03006710419
                            [status] => inactive
                        )

                    [original:protected] => Array
                        (
                            [id] => 1
                            [first_name] => Mohammed Saqib
                            [last_name] => Rajput
                            [email] => rajput.saqib@hotmail.com
                            [dob] => 2015-06-18 00:00:00
                            [mobile] => 03006710419
                            [status] => inactive
                        )

                    [relations:protected] => Array
                        (
                        )

                    [visible:protected] => Array
                        (
                        )

                    [appends:protected] => Array
                        (
                        )

                    [guarded:protected] => Array
                        (
                            [0] => *
                        )

                    [dates:protected] => Array
                        (
                        )

                    [touches:protected] => Array
                        (
                        )

                    [observables:protected] => Array
                        (
                        )

                    [with:protected] => Array
                        (
                        )

                    [morphClass:protected] => 
                    [exists] => 1
                )

        )

)

Answer 1

您可以使用array_keys 从模型中获取所有属性。

$users = Users::all();
$user = $users->first();
$attributes = array_keys($user->toArray());

或者，您可以使用this approach 从数据库中的某个表中获取列名。

Answer 2

现在您可以只使用集合中的->keys() 方法。

$fruits = collect(['orange' => 15, 'lemon' => 75]);

$keys = $fruits->keys();

// ['orange', 'lemon']

在https://laravel.com/docs/master/collections#method-keys查看更多信息