如何在Laravel中将数组转换为字符串？

Question

我正在使用引导程序形式从数组中的复选框值中获取输入。我正在使用数组存储复选框值。我如何将这个数组转换为string。因为数据库仅采用字符串值。这是我的代码<div class="form-group col-md-12">    <div class="custom-control custom-checkbox custom-control-inline">        <input type="checkbox" id="eduPrimary" name="education[]"         class="custom-control-input" value="primary" />        <label class="custom-control-label" for="eduPrimary">primary</label>    </div></div><div class="form-group col-md-12">    <div class="custom-control custom-checkbox custom-control-inline">        <input type="checkbox" id="eduSecondary" name="education[]"         class="custom-control-input" value="secondary" />        <label class="custom-control-label" for="eduSecondary">secondary</label>    </div></div><div class="form-group col-md-12">    <div class="custom-control custom-checkbox custom-control-inline">        <input type="checkbox" id="eduUniversity" name="education[]"         class="custom-control-input" value="university" />        <label class="custom-control-label"for="eduUniversity">university</label>    </div></div>在后端，我正在使用laravel将值存储到数据库中，但是在mysql中将数组存储为字符串时会运行错误。public function store(Request $request,AdProfile $adprofile){    $adprofile->education = $request->education[];    $adprofile->save();    return redirect()->route('adprofile.profilecomplete');}

Answer 1

 print_r($request->education); //It is an array print

$str_json = json_encode($request->education); //array to json string conversion

echo  $str_json; // printing json string

print_r(json_decode($str_json)); //printing array after convert json string to array

exit; // exiting further execution to check resutls

Answer 2

您可以implode为此使用php ，也可以为此使用laravel集合。继承人

collect([1, 2, 3, 4, 5])->implode('-');

// '1-2-3-4-5'

请参阅此Implode的文档

或者您可以使用php函数内爆

看到这个

$arr = array('Hello','World!','Beautiful','Day!');

echo implode(" ",$arr);

//Hello World! Beautiful Day!

Answer 3

在您的“ AdProfile”模型中添加属性强制转换变量，以便laravel将数组自动转换为json并将json转换为数组，

像这样

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class AdProfile extends Model

{

    /**

     * The attributes that should be casted to native types.

     *

     * @var array

     */

    protected $casts = [

        'education' => 'array',

    ];

}