如何在PHP中的构造函数类中添加方法？

Question

I have a class A which needs a new method if one of its arguments is set up to true.

Class A

Class A{

   private $is_new_method;  

   public function __construct( $is_new_method = false, $new_method_name = "" ){

        $this->is_new_method = $is_new_method;

        if( $this->is_new_method ){
           //TODO : add new method in this class based on $new_method_name 
        }      
   }

}

I saw runkit_method_add but it needs (PECL runkit >= 0.7.0).

Notice: this function will be call inside a core of a framework like this :

$foo = new A();
$foo->myNewFunction();

So what is the best way to do this ?

Answer 1

Thanks @Jared Farrish ! I found my solution based on your recommandation.

Class A{

    private $is_new_method; 

    private $new_method; 

    public function __construct( $is_new_method = false, $new_method_name = "" ){

        $this->is_new_method = $is_new_method;

        if( $this->is_new_method ){
           $new_method = $this->make_my_new_method( $new_method_name ); 
        }      
   }

   private function make_my_new_method( $method_name ){
        $functionName  = "foo_" . $method_name;
        $$functionName = function ( $item ) {
            print_r( $item );
        }
        return $$functionName;
   }

   public function __call( $method, $args){
       if ( isset( $this->new_method ) ) {
           $func = $this->new_method;
           return call_user_func_array( $func, $args );
       }
   }

}