这是我对象的print_r;
Array
(
[country] => Illuminate\Database\Eloquent\Collection Object
(
[items:protected] => Array
(
[0] => App\Models\Location Object
(
[connection:protected] =>
[table:protected] =>
[primaryKey:protected] => id
[perPage:protected] => 15
[incrementing] => 1
[timestamps] => 1
[attributes:protected] => Array
(
[country] => Scotland
)
[original:protected] => Array
(
[country] => Scotland
)
[relations:protected] => Array
(
)
[hidden:protected] => Array
(
)
[visible:protected] => Array
(
)
[appends:protected] => Array
(
)
[fillable:protected] => Array
(
)
[guarded:protected] => Array
(
[0] => *
)
[dates:protected] => Array
(
)
[casts:protected] => Array
(
)
[touches:protected] => Array
(
)
[observables:protected] => Array
(
)
[with:protected] => Array
(
)
[morphClass:protected] =>
[exists] => 1
)
[1] => App\Models\Location Object
(
[connection:protected] =>
[table:protected] =>
[primaryKey:protected] => id
[perPage:protected] => 15
[incrementing] => 1
[timestamps] => 1
[attributes:protected] => Array
(
[country] => England
)
[original:protected] => Array
(
[country] => England
)
[relations:protected] => Array
(
)
[hidden:protected] => Array
(
)
[visible:protected] => Array
(
)
[appends:protected] => Array
(
)
[fillable:protected] => Array
(
)
[guarded:protected] => Array
(
[0] => *
)
[dates:protected] => Array
(
)
[casts:protected] => Array
(
)
[touches:protected] => Array
(
)
[observables:protected] => Array
(
)
[with:protected] => Array
(
)
[morphClass:protected] =>
[exists] => 1
)
[2] => App\Models\Location Object
(
[connection:protected] =>
[table:protected] =>
[primaryKey:protected] => id
[perPage:protected] => 15
[incrementing] => 1
[timestamps] => 1
[attributes:protected] => Array
(
[country] => Wales
)
[original:protected] => Array
(
[country] => Wales
)
[relations:protected] => Array
(
)
[hidden:protected] => Array
(
)
[visible:protected] => Array
(
)
[appends:protected] => Array
(
)
[fillable:protected] => Array
(
)
[guarded:protected] => Array
(
[0] => *
)
[dates:protected] => Array
(
)
[casts:protected] => Array
(
)
[touches:protected] => Array
(
)
[observables:protected] => Array
(
)
[with:protected] => Array
(
)
[morphClass:protected] =>
[exists] => 1
)
[3] => App\Models\Location Object
(
[connection:protected] =>
[table:protected] =>
[primaryKey:protected] => id
[perPage:protected] => 15
[incrementing] => 1
[timestamps] => 1
[attributes:protected] => Array
(
[country] =>
)
[original:protected] => Array
(
[country] =>
)
[relations:protected] => Array
(
)
[hidden:protected] => Array
(
)
[visible:protected] => Array
(
)
[appends:protected] => Array
(
)
[fillable:protected] => Array
(
)
[guarded:protected] => Array
(
[0] => *
)
[dates:protected] => Array
(
)
[casts:protected] => Array
(
)
[touches:protected] => Array
(
)
[observables:protected] => Array
(
)
[with:protected] => Array
(
)
[morphClass:protected] =>
[exists] => 1
)
)
)
)
我想要一个foreach循环打印出country阵列中的三个国家 - （英格兰，威尔士，苏格兰）。
我尝试过循环，例如;
@foreach ($locations['country'] as $country)
{{ $country }}
@endforeach
我尝试过其他变种，但无济于事。什么是正确的语法？此外，有人可以解释我如何解释这一点，以便将来更好地了解foreach与数组？我通常只是猜测，直到我得到正确的结果 - 但是为了改变我真的想知道如果把它放在一起，如果这是有道理的。
如果有帮助，我正在使用Laravel ......
答案 0 :(得分：7)
你正在循环的不是一个数组。它是Laravel系列。但它的行为就像一个数组，所以它并不重要。循环本身实际上看起来正确。但是，您不必仅输出$country，而是必须实际访问名为$country的{{1}}上的属性：
country通常，@foreach($locations['country'] as $location)
{{ $location->country }}
@endforeach
循环遍历数组或集合中的每个项目，并将该项目放入foreach之后定义的变量中。也许this explanation也有帮助。
稍微多一点：Laravel有一个很好的as函数，可以从集合中每个模型的属性构建一个数组。
lists()会导致类似：
$countries = $locations['country']->lists('country');
然后您可以使用['England', 'Wales', 'Scotland']
之类的函数生成以逗号分隔的列表：
implode()答案 1 :(得分：-1)