Laravel Collection集合的contain和containsStrict方法

使用 contains（） 方法

我们将看到如何在集合中使用 contains（）。

假设我们有 SiteController.php /app/Http/Controllers 文件夹中的控制器文件。

代码示例 #1

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $collection = collect([
            "India",
            "Australia",
            "South Africa",
            "Nepal"
        ]);

        $collection->contains('Nepal');  /* true */
        $collection->contains('China');   /* false */
    }
}

概念

$collection->contains('Nepal');  /* true */

代码示例 #2

Laravel 集合包含与键值检查

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $collection = collect([
            ["id" => 1, "name" => "Sanjay", "email" => "sanjay@gmail.com"],
            ["id" => 2, "name" => "Vijay", "email" => "vijay@gmail.com"],
            ["id" => 3, "name" => "Ashish", "email" => "ashish@gmail.com"]
        ]);

        $collection->contains('name', 'Vijay');  /* true */
        $collection->contains('name', 'Dhananjay');   /* false */
    }
}

概念

$collection->contains('name', 'Vijay');  /* true */

代码示例 #3

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Product;

class SiteController extends Controller
{
    public function index()
    {
        Product::create(['name' => 'Science Books', 'price' => 2200]);
        Product::create(['name' => 'Tshirts', 'price' => 1250]);
        Product::create(['name' => 'Jeans', 'price' => 1500]);

        Product::get()->contains('name', 'Jeans'); /* true */

        Product::get()->contains('name', 'Electronic Device');  /* false */

        Product::get()->contains('price', 1500);  /* true */
    }
}

概念

Product::get()->contains('name', 'Jeans'); /* true */

代码示例 #4

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Product;

class SiteController extends Controller
{
    public function index()
    {
        Product::create(['name' => 'Science Books', 'price' => 2200]);
        Product::create(['name' => 'Tshirts', 'price' => 1250]);
        Product::create(['name' => 'Jeans', 'price' => 1500]);

        Product::get()->contains(function ($key, $value) {
            return $value->price > 1000;
        }); // true
    }
}

概念

Product::get()->contains(function ($key, $value) {
     return $value->price > 1000;
}); // true

使用 containsStrict（） 方法

我们将看到如何在集合中使用 containsStrict（）。它还检查值和类型。

<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;

class SiteController extends Controller
{
    public function index()
    {
        $collection = collect([100, 150, 200, 250, 300]);

        $collection->containsStrict('150');  /* false */

        $collection->containsStrict(150);  /* true */
    }
}