Laravel：从集合数组中删除元素

Laravel : Removing an element from a collection array

提问by Kevin fu

i use a variable called $users to "pluck" only the emails from my users table, using:

我使用一个名为 $users 的变量来“提取”我的用户表中的电子邮件，使用：

$users = user::all()->pluck('email');

$users = user::all()->pluck('email');

when i dd($users), i get this

当我 dd($users) 时，我得到了这个

<pre>
Collection {#214 ▼
  #items: array:8 [▼
    0 => "[email protected]"
    1 => "[email protected]"
    2 => "[email protected]"
    3 => "[email protected]"
    4 => "[email protected]"
    5 => "[email protected]"
    6 => "[email protected]"
    7 => "[email protected]"
  ]
}
</pre>

meaning that $users isn't purely an array, i get various types of errors when i treat it like an array.

这意味着 $users 不是纯粹的数组，当我将它视为数组时，我会遇到各种类型的错误。

my question is, in php (in a Laravel Framework) how do i remove a specific user's email from the variable above? or is there a better way to use "pluck" so that it returns an array instead?

我的问题是，在 php 中（在 Laravel 框架中）如何从上面的变量中删除特定用户的电子邮件？或者有没有更好的方法来使用“pluck”，以便它返回一个数组？

thanks in advance.

提前致谢。

采纳答案by gorgonauta

I had this problem too and i solved it like this:

我也有这个问题，我是这样解决的：

DB::table('user')->pluck('email')->all();

DB::table('user')->pluck('email')->all();

回答by Mayank Pandeyz

Here $usersis an Std Class Object, you can iterate over it and push its properties to an array like:

这$users是一个 Std 类对象，您可以遍历它并将其属性推送到一个数组，如：

$userDetails = array();
foreach($users as $user)
{
  $userDetails[] = (array)$user;
  // or
  $userDetails[] = $user->index;
}

You can also put an Ifblock inside foreach()to check some condition.

你也可以If在里面放一个块foreach()来检查一些条件。

回答by ram pratap singh

If you want to remove email where email id where index is 0 then you follow below query first

如果您想删除电子邮件 ID 索引为 0 的电子邮件，那么您首先要遵循以下查询

   $users = user::all()->pluck('email');
   unset($users['0']);
   $dd($users);

回答by Thiago Fran?a

You would want to use ->forget()

你想用 ->forget()

$collection->forget($key);

Or you can use rejectmethod

或者你可以使用拒绝方法

$newColection = $collection->reject(function($element) {
    return $element === 'emailaddress@';
});