PHP7 匿名类(页 1) - PHP最新版本 - PHP开发笔记 php|mysql|javascript|thinkphp

xiexie 发表于 2020-12-7 15:05

PHP7 匿名类

<span style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, " helvetica="" neue",="" "pingfang="" sc",="" "microsoft="" yahei",="" "source="" han="" sans="" "noto="" cjk="" "wenquanyi="" micro="" hei",="" sans-serif;="" font-size:="" 15px;"="">现在，您可以在 PHP7 中使用 new class 来定义（实例化）匿名类。匿名类可以用来代替完整的类定义。</span><div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><?php</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>interface Logger {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>public function log(string $msg);</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>}</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>class Application {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>private $logger;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>public function getLogger(): Logger {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>return $this->logger;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>}</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>public function setLogger(Logger $logger) {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>$this->logger = $logger;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>}  </span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><span style="white-space:pre"> </span>}</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">   $app = new Application;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">   $app->setLogger(new class implements Logger {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">      public function log(string $msg) {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">         print($msg);</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">      }</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">   });</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">   $app->getLogger()->log("My first Log Message");</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">?></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">它产生以下浏览器输出：</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">My first Log Message</span></font></div></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><span style="color: rgb(51, 51, 51); font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "WenQuanYi Micro Hei", sans-serif; font-size: 15px;">可以将参数传递到匿名类的构造器，也可以扩展（extend）其他类、实现接口（implement interface），以及像其他普通的类一样使用 trait：</span></div><div style=""><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><?php</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">class SomeClass {}</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">interface SomeInterface {}</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">trait SomeTrait {}</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">var_dump(new class(10) extends SomeClass implements SomeInterface {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    private $num;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    public function __construct($num)</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">        $this->num = $num;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    }</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    use SomeTrait;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"> });</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">?></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">它产生以下浏览器输出：</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">object(class@anonymous)#1 (1) {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">  ["Command line code0x104c5b612":"class@anonymous":private]=></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">  int(10)</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">}</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">匿名类被嵌套进普通 Class 后，不能访问这个外部类（Outer class）的 private（私有）、protected（受保护）方法或者属性。为了访问外部类（Outer class）protected 属性或方法，匿名类可以 extend（扩展）此外部类。为了使用外部类（Outer class）的 private 属性，必须通过构造器传进来：</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><?php</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">class Outer</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">{</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    private $prop = 1;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    protected $prop2 = 2;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    protected function func1()</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">        return 3;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    }</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    public function func2()</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">        return new class($this->prop) extends Outer {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">            private $prop3;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">            public function __construct($prop)</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">            {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">                $this->prop3 = $prop;</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">            }</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;"><br></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">            public function func3()</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">            {</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">                return $this->prop2 + $this->prop3 + $this->func1();</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">            }</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">        };</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">    }</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">}</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">echo (new Outer)->func2()->func3();</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">?></span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">它产生以下浏览器输出：</span></font></div><div style=""><font color="#333333" face="-apple-system, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Microsoft YaHei, Source Han Sans SC, Noto Sans CJK SC, WenQuanYi Micro Hei, sans-serif"><span style="font-size: 15px;">6</span></font></div></div>

[[i] 本帖最后由 xiexie 于 2020-12-7 16:05 编辑 [/i]]

页: [1]

PHP开发笔记's Archiver

PHP7 匿名类