PHP无法从界面扩展？ [英] PHP can't extend from interface?

问题描述

我在下面的单个php文件中写道。

I write below in a single php file.

<?php
interface people
{
    public function take($s);
}

class engineer extends people
{
    public function take($s){
        echo $s;
    }
}
?>

人是一个界面，工程师扩展人。
但是当我运行此代码时，错误：

The people is an interface, the engineer extends people. But when I run this code, the error:

Fatal error: Class engineer cannot extend from interface people in E:\php5\Mywwwroot\b.php on line 12

发生了什么事？我的PHP版本是5.4。

What's happened? My PHP version is 5.4.

推荐答案

你实现接口和扩展课程：

<?php
interface people
{
    public function take($s);
}

class engineer implements people
{
    public function take($s){
        echo $s;
    }
}
?>

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