现在可以使用new class定义匿名类。匿名类可以用来代替完整的类定义。
<?php
interface Logger {
public function log(string $msg);
}
class Application {
private $logger;
public function getLogger(): Logger {
return $this->logger;
}
public function setLogger(Logger $logger) {
$this->logger = $logger;
}
}
$app = new Application;
$app->setLogger(new class implements Logger {
public function log(string $msg) {
print($msg);
}
});
$app->getLogger()->log("My first Log Message");
?>它产生以下输出-
My first Log Message