PHP：Codewars註冊運動

Question

我正在tryng解決這個上codewars網站：

更正此代碼，以便迎接函數返回的預期值。

class Person { 
    public $name; 
    public function __construct($name) { 
    $this->name = $name; 
    } 
    public function greet($guest) { 
    return 'Hello $guest, my name is $name'; 
    } 

} 

哪裏出錯？

Answer 1

Complex (curly) syntax只能用雙引號""

改變它像這樣：

class Person { 
    public $name; 
    public function __construct($name) { 
    $this->name = $name; 
    } 
    public function greet($guest) { 
    return "Hello $guest, my name is {$this->name}"; 
    } 

} 

輸出：

$x = new Person('john'); 
echo $x->greet('peter'); 

//Hello peter, my name is john