在PHP应用中正确获取.htaccess定义的服务器环境变量

RewriteCond %{HTTP_HOST} ^www\.cg\.mywebsite(\.com)?(\:[0-9]+)?$
RewriteRule (.*) $1 [E=COUNTRY:57]

# 示例：在VirtualHost中直接设置环境变量
<VirtualHost *:80>
    ServerName www.cg.mywebsite.com
    DocumentRoot /path/to/your/symfony/public

    <Directory /path/to/your/symfony/public>
        Options Indexes FollowSymLinks
        AllowOverride All # 允许.htaccess生效
        Require all granted
    </Directory>

    # 或者直接在VirtualHost中设置环境变量
    # SetEnv COUNTRY 57
    # 但如果需要根据Host动态设置，则仍需RewriteRule
    RewriteEngine On
    RewriteCond %{HTTP_HOST} ^www\.cg\.mywebsite(\.com)?(\:[0-9]+)?$
    RewriteRule (.*) $1 [E=COUNTRY:57]

    # ... 其他Symfony所需的RewriteRule ...
</VirtualHost>

# 示例：在Nginx配置中根据Host设置环境变量
server {
    listen 80;
    server_name www.cg.mywebsite.com;
    root /path/to/your/symfony/public;

    index index.php index.html;

    location / {
        try_files $uri /index.php$is_args$args;
    }

    location ~ \.php$ {
        fastcgi_pass unix:/var/run/php/php8.0-fpm.sock; # 根据你的PHP-FPM配置调整
        fastcgi_index index.php;
        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
        include fastcgi_params;

        # 根据HTTP_HOST设置COUNTRY环境变量
        if ($host ~* "^www\.cg\.mywebsite(\.com)?(\:[0-9]+)?$") {
            set $country_var "57";
        }
        # 默认值，如果不需要可以省略
        if ($country_var = "") {
            set $country_var "1";
        }
        fastcgi_param COUNTRY $country_var;
    }

    # ... 其他Nginx配置 ...
}

<?php

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

class MyLegacyController extends AbstractController
{
    #[Route('/some/path', name: 'app_legacy_route')]
    public function index(Request $request): Response
    {
        // 从请求对象获取主机名
        $host = $request->getHost(); // 或者 $request->server->get('HTTP_HOST')

        // 默认值，与.htaccess中未匹配时的行为一致
        $country = 1;

        // 根据主机名模式匹配来设置COUNTRY值
        if (preg_match('/^www\.cg\.mywebsite(\.com)?(\:[0-9]+)?$/', $host)) {
            $country = 57;
        }

        // 现在 $country 变量可以在你的应用逻辑中使用了
        // 例如，将其传递给模板或用于业务逻辑
        // $this->doSomethingWithCountry($country);

        return $this->render('my_legacy_template/index.html.twig', [
            'country' => $country,
        ]);
    }

    // 假设这是一个服务方法
    public function getCountryFromHost(Request $request): int
    {
        $host = $request->getHost();
        $country = 1; // Default

        if (preg_match('/^www\.cg\.mywebsite(\.com)?(\:[0-9]+)?$/', $host)) {
            $country = 57;
        }
        return $country;
    }
}