PHP 教程
PHP 匿名類
PHP 7 新特性PHP 7 支持通過 new class 來實例化一個匿名類，這可以用來替代一些"用后即焚"的完整類定義。
實例
實例
<?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;
//?使用?new?class?創(chuàng)建匿名類
$app->setLogger(new?class?implements?Logger?{
???public?function?log(string?$msg)?{
??????print($msg);
???}
});
$app->getLogger()->log("我的第一條日志");
?>
interface?Logger?{
???public?function?log(string?$msg);
}
class?Application?{
???private?$logger;
???public?function?getLogger():?Logger?{
??????return?$this->logger;
???}
???public?function?setLogger(Logger?$logger)?{
??????$this->logger?=?$logger;
???}??
}
$app?=?new?Application;
//?使用?new?class?創(chuàng)建匿名類
$app->setLogger(new?class?implements?Logger?{
???public?function?log(string?$msg)?{
??????print($msg);
???}
});
$app->getLogger()->log("我的第一條日志");
?>
以上程序執(zhí)行輸出結果為：
我的第一條日志
其他擴展