php artisan make:migration add_uuid_to_users_table --table=users

Schema::table('users', function (Blueprint $table) {
    $table->uuid('uuid')->nullable()->after('id');
});

php artisan migrate

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Str;

class User extends Model {
    protected static function booted() {
        static::creating(function ($user) {
            $user->uuid = Str::uuid();
        });
    }
}

User::create([
    'name' => 'Sara',
    'email' => 'sara@example.com',
    'password' => bcrypt('password'),
]);

5f7a1e82-d03a-4b32-b0e6-6a23f542e109

php artisan env:encrypt

php artisan env:encrypt --key=3UVsEgGVK36XN82KKeyLFMhvosbZN1aF

  php artisan env:encrypt --key=ABCDEFGHIJKLMNOPQRSTUVWX123456
  

  php artisan env:encrypt --key=ABCDEFGH12345678 --cipher=AES-128-CBC
  

The key length does not match the requirements of the cipher.

php artisan env:encrypt --cipher=AES-128-CBC

php artisan env:encrypt --env=staging

php artisan env:decrypt

php artisan env:decrypt --key=3UVsEgGVK36XN82KKeyLFMhvosbZN1aF

php artisan env:decrypt --key=qUWuNRdfuImXcKxZ --cipher=AES-128-CBC

php artisan env:decrypt --env=staging

php artisan env:decrypt --force

INSERT INTO products (product_code, price)
VALUES ('Y1J09bGxwM', 100), 
       ('Y1J09bgXwM', 200);

SELECT * FROM products WHERE product_code = 'Y1J09bGxwM';

ALTER TABLE products 
MODIFY product_code VARCHAR(255) COLLATE utf8mb4_bin;

INSERT INTO products (product_code, price)
VALUES ('Y1J09bGxwM', 100), 
       ('Y1J09bgXwM', 200);

SELECT * FROM products WHERE product_code = 'Y1J09bGxwM';

->withRouting(
    web: __DIR__.'/../routes/web.php',
    commands: __DIR__.'/../routes/console.php',
    health: '/up', 
)

->withRouting(
    web: __DIR__.'/../routes/web.php',
    commands: __DIR__.'/../routes/console.php',
    health: '/status', 
)

use Illuminate\Foundation\Events\DiagnosingHealth;

Event::listen(DiagnosingHealth::class, function () {
    try {
        DB::connection()->getPdo();
    } catch (\Exception $e) {
        throw new \Exception('Database connection failed!');
    }
});

$discount = 0.2;  // تخفیف 20 درصد
$productPrice = 100;  // قیمت اولیه محصول

$applyDiscount = function ($price) use ($discount) {
    return $price - ($price * $discount);
};

$finalPrice = $applyDiscount($productPrice);

echo "قیمت نهایی محصول: " . $finalPrice; 

// خروجی: قیمت نهایی محصول: 80

Route::get('greet/{name}', function ($name) {
    return "Hello, {$name}! 👋";
});

use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Log;

public function boot()
{
    DB::listen(function ($query) {
        if ($query->time > 1000) { // یک ثانیه
            Log::warning('🚨 Slow Query Detected: ' . $query->sql, [
                'bindings' => $query->bindings,
                'time' => $query->time
            ]);
        }
    });
}

Route::post('server', [ProvisionServerController::class, 'createServer']);

php artisan make:controller ProvisionServer --invokable

<?php

namespace App\Http\Controllers;

class ProvisionServerController extends Controller
{
    public function __invoke()
    {
        return response()->json(['message' => 'Server provisioned successfully!']);
    }
}

use App\Http\Controllers\ProvisionServerController;

Route::post('/server', ProvisionServerController::class);

curl -X POST http://your-app-url/server

use Illuminate\Support\Facades\Route;

Route::fallback(function () {
    return response()->view('errors.custom-404', [], 404);
});
‍‍‍

Route::fallback([ErrorController::class, 'notFound']);
‍‍‍

Route::get('/challenge', function () {
    $data = collect([1, 2, 3, 4]);

    $result = $data->filter(function ($item) {
        return $item % 2 === 0;
    })->map(function ($item) {
        return $item * 2;
    })->reduce(function ($carry, $item) {
        return $carry + $item;
    });

    return $result;
});

class PhpVersion

{
    private string $version = '8.3';

    public function getVersion(): string
    {

        return $this->version;
    }

    public function increment(): void

    {
        [$major, $minor] = explode('.', $this->version);
        $minor++;
        $this->version = "{$major}.{$minor}";
    }

}

$php = new PhpVersion();

echo $php->getVersion();

class PhpVersion

{

    public private(set) string $version = '8.4';

    public function increment(): void

    {
        [$major, $minor] = explode('.', $this->version);
        $minor++;
        $this->version = "{$major}.{$minor}";
    }

}

$php = new PhpVersion();

echo $php->version;

php
php
$php = new PhpVersion();
$php->version = 8
‍‍‍‍‍‍‍

class OrderService {
    /**
     * @deprecated از applyDiscountWithRules استفاده کن
     */
    public function applyDiscountManually($amount) {
        // منسوخ شده
        return $amount - 10000;
    }

    public function applyDiscountWithRules($amount) {
        // منطقی و امن
        return $amount * 0.9;
    }
}
$order = new OrderService();
echo $order->applyDiscountManually(100000); // اخطاری نمی‌گیری!

class OrderService {
    #[\Deprecated(
        message: "از applyDiscountWithRules استفاده کن",
        since: "8.4"
    )]
    public function applyDiscountManually($amount) {
        return $amount - 10000;
    }

    public function applyDiscountWithRules($amount) {
        return $amount * 0.9;
    }
}
$order = new OrderService();
echo $order->applyDiscountManually(100000);
// ⚠️ Deprecated: Method applyDiscountManually is deprecated since 8.4...