Suppose I have the following class structure:
class Logger {
public function __construct(string $channel) {
// Logger初始化工作
}
}
class UsingLogger {
private Logger $logger;
public function __construct(Logger $logger) {
$this->logger = $logger;
}
}
$logger = new Logger("UsingLogger");
$usingLogger = new UsingLogger($logger);
This code works fine. In this case, the name of the channel is the name of the class. However, I want to use PHP DI (https://php-di.org/doc/php-definitions.html#autowired-objects) to solve this problem. The problem is that it can't resolve the situation because it doesn't know the class name passed to the logger.
Example PhpDI definition
return [
"SomeLoggerInterface" => autowire(Logger::class)->constructorParameter("channel", // 在这里获取类的名称。在这种情况下，它将是 "UsingLogger")
]
Hope this makes it clear. If more context is needed, please let me know.
I have outlined my steps
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
I assume you have the DI package installed.
<?php declare(strict_types=1); require_once 'vendor/autoload.php'; final class Logger { public function __construct(private readonly string $channel) {} } final class UsingLogger { public function __construct(private readonly Logger $logger) {} } $container = new DI\Container([ 'channel' => 'UsingLogger', 'Logger' => DI\create()->constructor(DI\get('channel')), 'UsingLogger' => DI\create()->constructor(DI\get('Logger')), ]); final class TestClass { public function __construct(UsingLogger $usingLogger) { var_dump($usingLogger); } } new TestClass($container->get('UsingLogger'));Running this script will produce the following output:
php index.php path/to/script.php:25: class UsingLogger#20 (1) { private readonly Logger $logger => class Logger#25 (1) { private readonly string $channel => string(11) "UsingLogger" } }Maybe you should also use interfaces. Hope this helps you.