Evaluate object to a boolean

Question

Consider the following:

class MyClass
{
  private $var1 = \"apple\";
  private $var2 = \"orange\";
}

$obj = new MyClass();

if($obj) { 
  // do this
}
else          


        

Answer 1

The best you can do is using __invoke:

class MyObject {

    private $_state;

    public function __construct($state = false) {
        $this->_state = $state;
    }

    public function __invoke() {
        return $this->_state;
    }

}

$true  = new MyObject(true);
$false = new MyObject(false);

var_dump($true());   // true
var_dump($false());  // false