#基本用法$collection= collect(['name' => 'Desk', 'price' => 100]);$collection->contains('Desk');//true$collection->contains('New York');//false#也可以用 contains 方法匹配一对键/值,即判断给定的配对是否存在于集合中$collection=collect([ ['product' => 'Desk', 'price' => 200],['p...
Laravel 的集合 Collection简介Illuminate\Support\Collection 类提供了一个更具可读性的、更便于处理数组数据的封装。具体例子看下面的代码。我们使用了 collect 函数从数组中创建新的集合实例,对其中的每个元素运行 strtoupper 函数之后再移除所有的空元素:$...
如上面的代码示例,Collection 类支持链式调用,一般来说,每一个 Collection 方法会返回一个全新的 Collection 实例,你可以放心地进行链接调用。创建集合如上所述,collect 辅助函数会利用传入的数组生成一个新的 Illuminate\Support\Collection 实例。所以要创建一个集合就这么简单:$collection = collect([1, 2, 3]...
Laravel Version: 7.0.7 PHP Version: 7.3.15 PHPUnit Version: 8.5.2 Expected behavior: Collections toArray() method should convert a collection to a plain array and all of the collection's nested objects that are an instance of Arrayable t...
1$collection = collect([1, 2, 3, 4]); 2 3$collection->count(); 4 5// 4diff()The diff method compares the collection against another collection or a plain PHP array based on its values. This method will return the values in the original collection that are not present in the ...
1$collection = collect([1, 2, 3, 4, 5]); 2 3$collection->contains(function ($key, $value) { 4 return $value > 5; 5}); 6 7// falseThe contains method uses "loose" comparisons when checking item values, meaning a string with an integer value will be considered equal to an...
Route::resource('sessions','SessonsController',['only'=>['create','store','destroy']); Illuminate\Database\Eloquent\Collection and User::first() and User::all()->first() 参考Arrays on Steroids.mp4 User::all()将返回上述Collection对象,该对象又实现了多个interface: ArrayAccess, ArrayableInterfa...
// returns the first & last name meta values $first_name = $collection->where('meta_key', 'first_name')->lists('value')[0]; $last_name = $collection->where('meta_key', 'last_name')->lists('value')[0]; 25.order belongs-to-many by pivot table ...
Laravel Version: 5.3.* PHP Version: 5.6 + 7.0 + 7.1 Database Driver & Version: sqlite (3.14.0) + mysql (5.7.17 Homebrew) Description: There are some issues that might relate to this one, but for me they either seemed like the examples we...
If your parent array has only arrays with values that can be stored in the table, you can do DB::table('Data')->insert($data) https://laravel.com/docs/9.x/queries#insert-statements Level 1 vandOP Posted 2 years ago @MohamedTammami need using query builder like insert with ...