get 方法返回一个 Illuminate\Support\Collection 集合实例,集合里的的每个元素都是一个 PDP StdClass 对象。你可以通过访问对象属性过的对应的字段的值:foreach ( $users as $user){ echo $user->name(); } 获得表格里的一条数据/指定列的值使用first 获得表格里的一条数据,这条数据返回一个 Std...
sum($callback = null) Get the sum of the given values. from EnumeratesValues $this|TWhenEmptyReturnType whenEmpty(callable $callback, callable $default = null) Apply the callback if the collection is empty. from EnumeratesValues $this|TWhenNotEmptyReturnType whenNotEmpty(callable $cal...
phpnamespaceIlluminate\Database\Query;useClosure;useIlluminate\Support\Collection;useIlluminate\Database\ConnectionInterface;useIlluminate\Database\Query\Grammars\Grammar;useIlluminate\Database\Query\Processors\Processor;classBuilder{//methods and variables come here} 如您所见,Eloquent 模型使用一些类,如Database...
在第一个CellValue（D）中，此值将递增最后一个数据，并将其添加到正下方以计算总数。对于下面的E〉A...
For instance, let's use the each higher order message to call a method on each object within a collection:$users = User::where('votes', '>', 500)->get(); $users->each->markAsVip();Likewise, we can use the sum higher order message to gather the total number of "votes" for a ...
工作表事件的实现可能会相当混乱，很难找到例子，所以当我看到这样的帖子时，我试着伸出援手。首先，我...
first($conditions, $column)null|modelRetrieve a single model get($conditions, $column)CollectionRetrieve the collection Statistical query method namereturn valuedescription count($conditions, $column = '*')intThe number of statistical max($conditions, $column)mixedThe maximum ...
App\User::first(['name']);=> App\User {#704name: "cnwedd",}//注意这个操作会执行数据库查询,并且只获取name字段 我们也可以使用laravel的collection support helper类来使得任意数组变成一个方便操作的collection: myusers=newIlluminate\Support\Collection(myuser...
use Jenssegers\Mongodb\Eloquent\Model as Eloquent; class User extends Eloquent { protected $collection = 'users_collection'; }NOTE: Eloquent will also assume that each collection has a primary key column named id. You may define a primaryKey property to override this convention. Likewise, you ...
For instance, let's use the each higher order message to call a method on each object within a collection:$users = User::where('votes', '>', 500)->get(); $users->each->markAsVip();CopyLikewise, we can use the sum higher order message to gather the total number of "votes" for...