Question

Assume you have several arbitrary classes like below:

class Foo
{
    $foovar;

    public function __construct()
    {
        $foovar = "Foo";
    }

    public function getFoo()
    {
        return($foovar);
    }
}

class Bar
{
    $F;

    public function __construct()
    {
        $F = new Foo();
    }
}

My question is is it possible to write something like the following

$B = new Bar();
echo($B->F->getFoo());

Like I said in my previous question, I come from a strong Java background know you can link variables together System.out.println() to call other objects methods. I’d like to know if this is possible in PHP

Answer 1

Yes you’re absolutely correct, please see this example.

class Foo {
 public function hello() {
  return 'hello world';
 }
}

class Bar {
 public $driver = NULL;

 public function __construct() {
  $this->driver = new Foo;
 }
}

$test = new Bar;
echo $test->driver->hello();

Some other comments

return($foovar);

• The parens aren’t needed here.
• You must use $this->foovar to work with class members (unless static, in which case it’s self::$foovar

Class members must also have their access type specifed, for example public $foovar;.

Why you’re moving from Java to PHP is beyond me, but good luck 🙂