PHP特质：此代码中的逻辑错误是什么

我已经投入了大约4小时的代码，但在代码片段正常运行时没有获得所需的结果。代码如下：PHP特质：此代码中的逻辑错误是什么

trait CircleShape{ 
    public function input($radius){ 
     $this->$radius = $radius; 
    } 
} 

trait AngleShape{ 
    public function input($height, $width){ 
     $this->$height = $height; 
     $this->$width = $height; 
    } 
} 

trait GeneralMethod{ 
    public function get($property){ 
     return $this->$property; 
    } 
} 

class Shape{ 
    private $height, $width, $radius; 
    const PI = 3.1415; 

    use GeneralMethod, AngleShape, CircleShape{ 
     AngleShape::input insteadof CircleShape; 
     CircleShape::input as inputCircle; 
    } 
} 

class Circle extends Shape{ 
    public function area(){ 
     return parent::PI * $this->get('radius') * $this->get('radius'); 
    }  
} 

class Rectangle extends Shape{ 

    use GeneralMethod, AngleShape, CircleShape{ 
     AngleShape::input insteadof CircleShape; 
     CircleShape::input as inputCircle; 
    } 
    public function area(){ 
     return $this->get('height') * $this->get('width'); 
    }  
} 

$rect = new Rectangle; 
$rect->input(12, 2); 
Echo "Area: " . $rect->area() . "\n"; 

$cir = new Circle; 
$cir->inputCircle(10); 
Echo "Circle Area : " . $cir->area() . "\n";

此代码中的逻辑错误是什么？为什么我得到以下输出：