yellow_pus

$.ajax({
  method: "POST",
  url: "some.php",
  data: { name: "John", location: "Boston" }
})
  .done(function( msg ) {
    alert( "Data Saved: " + msg );
});

$name = $_POST["name"];
$location = $_POST["location"];
var_dump($name, $location);

fetch ("some.php",{
body: "name=" + encodeURIComponent("John") + "&location=" + encodeURIComponent("Boston")
cache: "default",
headers: {'Content-type': 'application/x-www-form-urlencoded; charset=utf-8'},
method: "POST",
mode: "cors"
}).then( (response) => {
  if (response.status !== 200) {           
    return Promise.reject();
  }
  return response["text"]();
}).then(msg=>{
alert( "Data Saved: " + msg );
})

папочки vendor и node_modules отсутсуют, точно так же, как и файл .env

return response('Something went wrong', 500)->header('Content-Type', 'text/plain');

class A
{
    private static array $instances = [];
    public readonly int $value;
  
    public function __construct(?int $value = null)
    {
        if ($value !== null) {
            $this->value = $value;
            static::$instances[] = $this;
        }
    }

    public function summ(): int
    {
        return array_reduce(
            static::$instances,
            fn($acc, $cur) => $acc + $cur->value,
            0
        );
    }
}

new A(2);
new A(3);
$summ = (new A())->summ();
print $summ; // 5

class Single
{
    public array $data = [];
    public static $instance;

    PRIVATE function __construct()
    {
    }

    public static function getInstance()
    {
        if (empty(self::$instance)) {
            self::$instance = new Single();
        }
        return self::$instance;
    }

    public function __get(string $key)
    {
        return $this->data[$key]??null;
    }

    public function __set(string $key, $value)
    {
        $this->data[$key] = $value;
    }
}

class A
{
    public static function tryW()
    {
        Single::getInstance()->some = 1;
    }
}

class B
{
    public static function tryR()
    {
        var_dump(Single::getInstance()->some);
    }
}

$a = new A();
$a->tryW();

$b = new B();
$b->tryR();

public function products(): BelongsToMany
{
    return $this->belongsToMany(Product::class, 'category_product', 'category_id', 'product_id');
}

Schema::create('category_product', function (Blueprint $table) {
    $table->primary(['category_id', 'product_id']);
    $table->foreignId('category_id')->nullable();
    $table->foreignId('product_id')->nullable();
});