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我尝试使用环境变量来配置我的苗条应用程序。

码头工人-compose.yml

services:
  web:
    build:
      context: .
      dockerfile: Dockerfile
    container_name: web_container
    ports:
    - 8001:80
    volumes:
    - ./:/src/app
    depends_on:
    - mysql
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: db
      MYSQL_USER: user
      MYSQL_PASSWORD: pwd
  mysql:
    image: mysql:5.7
    container_name: mysql_container
    environment:
      MYSQL_ROOT_PASSWORD: root
      MYSQL_DATABASE: db
      MYSQL_USER: user
      MYSQL_PASSWORD: pwd
    ports:
      - 8002:3306
    volumes:
    - ./database/:/docker-entrypoint-initdb.d

在我的 php-di 配置中，我有：

    'db.root-password' => \DI\env("MYSQL_ROOT_PASSWORD","root"),
    'db.username' => \DI\env("MYSQL_USER","root"),
    'db.password' => \DI\env("MYSQL_PASSWORD","root"),
    'db.name' => \DI\env("MYSQL_DATABASE
    PDO::class => function () {
        var_dump(\DI\env("MYSQL_PASSWORD","root"));
        var_dump(\DI\get('db.password'));
        var_dump($_ENV['MYSQL_PASSWORD']);

        return new PDO(...);
    },

我尝试获取在 docker-compose 中声明的环境变量值来设置我的 PDO 对象。问题是 var_dumps 打印：

/srv/app/app/bootstrap.php:56:
object(DI\Definition\EnvironmentVariableDefinition)[84]
  private 'name' => string '' (length=0)
  private 'variableName' => string 'MYSQL_PASSWORD' (length=14)
  private 'isOptional' => boolean true
  private 'defaultValue' => string 'root' (length=4)

/srv/app/app/bootstrap.php:57:
object(DI\Definition\Reference)[84]
  private 'name' => string '' (length=0)
  private 'targetEntryName' => string 'db.password' (length=11)

/srv/app/app/bootstrap.php:58:string 'pwd' (length=9)

我无法使用 PHP-DI 功能获取环境变量值。有人可以帮助我吗？

谢谢

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