可以通过以下方式移除所有无效的模型并聚合还存在的用户的名字： $users = App\User::where('active', 1)->get(); $names = $users->reject(function ($user) { return $user->active === false; 本文档由 Laravel 学院（LaravelAcademy.org）提供 intersect isEmpty keyBy keys last map merge pluck pop prepend pull push put random reduce reject reverse 本文档由 Laravel 学院（LaravelAcademy.org）提供 Laravel 学院致力于提供优质 Laravel 中文学习资源 143 search null])->map(function ($name) { return strtoupper($name); })->reject(function ($name) { return empty($name); }); 正如你所看到的，Collection

default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one

default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one

default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one

default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one

default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one

default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one

default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one

default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one

default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one default behavior, the specified domain must include the origin server. Oth- erwise, the user agent will reject the cookie. Note: Cookies do not provide isolation by port, so the domain should not provide one