7.10.3 PHP图形计算器主程序的实现

7.10.3 PHP图形计算器主程序的实现

index.php

    
        
        
    

    
        
            
简单的图形计算器

            矩形 ||
            三角形 
        

        



        ";
            
            }

        ?>
    

rect.class.php

width = $arr['width'];
        $this->height = $arr['height'];
        $this->name = $arr['name'];
    }
    
    function area() {
        return $this->width * $this->height;
    }

    function zhou() {
        return 2*($this->width + $this->height);
    }

    function view() {
        $form = '
';
        $form .= $this->name.'的宽:
';
        $form .= $this->name.'的高:
';
        $form .= '
';
        $form .='';
    }

    function yan($arr) {
        $bg = true;
        if($arr['width'] < 0) {
            echo $this->name."的宽不能为0!
";
            $bg = false;    
        }

        if($arr['height'] < 0) {
            echo $this->name."的高度不能小于0!
";
            $bg = false;
        }

        return $bg;
    }

}

shape.class.php