Laravel 5中all()和toArray()之间的区别

问题描述：

当我管理需要转换为数组的集合时，通常使用toArray().但是我也可以使用all().我不知道这两个功能的区别...

When I manage a collection that I need to convert to an array, I usually use toArray(). But I can also use all(). I'm not aware of the diference of those 2 function...

有人知道吗?

答

如果它是Eloquent模型的集合，那么这些模型也将通过 toArray()

If it's a collection of Eloquent models, the models will also be converted to arrays with toArray()

    $col->toArray();

所有这些都将返回一个Eloquent模型数组，而不将其转换为数组.

With all it will return an array of Eloquent models without converting them to arrays.

    $col->all();

toArray方法将集合转换为纯PHP数组.如果集合的值是Eloquent模型，则这些模型也将转换为数组: toArray()

The toArray method converts the collection into a plain PHP array. If the collection's values are Eloquent models, the models will also be converted to arrays: toArray()

all()返回集合中的项目

/**
 * Get all of the items in the collection.
 *
 * @return array
 */
public function all()
{
    return $this->items;
}

toArray()返回集合的项目，并将它们转换为可数组的数组:

toArray() returns the items of the collection and converts them to arrays if Arrayable:

/**
 * Get the collection of items as a plain array.
 *
 * @return array
 */
public function toArray()
{
    return array_map(function ($value) {
        return $value instanceof Arrayable ? $value->toArray() : $value;
    }, $this->items);
}

例如:像这样从数据库中获取所有用户:

For example: Grab all your users from database like this:

$users = User::all();

然后以各种方式丢弃它们，您将看到区别:

Then dump them each way and you will see difference:

dd($users->all());

并使用toArray()

And with toArray()

dd($users->toArray());

Laravel 5中all()和toArray()之间的区别

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