Using Namespaces with use

<?php

namespace App\Shop;

class Product
{
    public function __construct(public string $name) {}
}

<?php
require_once __DIR__ . "/src/Shop/Product.php";

use App\Shop\Product;

$p = new Product("Notebook");

echo $p->name;

Notebook

<?php
namespace App;

use DateTimeImmutable;
use InvalidArgumentException;

$date = new DateTimeImmutable("2026-03-01");

try {
    throw new InvalidArgumentException("example");
} catch (InvalidArgumentException $e) {
    echo $date->format("d M Y") . ": " . $e->getMessage();
}

01 Mar 2026: example

<?php
namespace App;

class Logger
{
    public function who(): string { return "App logger"; }
}

namespace Vendor;

class Logger
{
    public function who(): string { return "Vendor logger"; }
}

namespace Main;

use App\Logger;
use Vendor\Logger as VendorLogger;

echo (new Logger())->who() . "\n";
echo (new VendorLogger())->who();

App logger
Vendor logger

<?php
use App\Shop\{Product, Cart, Order};

<?php
namespace Utils {
    const GREETING = "Hello";

    function shout(string $text): string
    {
        return strtoupper($text) . "!";
    }
}

namespace Main {
    use function Utils\shout;
    use const Utils\GREETING;

    echo shout(GREETING);
}

HELLO!