Question

How i can run method $this->ob->getVar() inside class B function C here ? I get no. Did i must transfer string to constructor ?

<?php 


class A{

  public $tabb = array('1'=>'one', '2'=>'two');
  public $index;

  public function setVar($v){

    $this->index = $v;

  }

  public function getVar(){

    return $this->index;

  }

  public function arr(){

    return $this->tabb;

  }

}


class B{

  public $tab;

  public function __construct($var){

    $this->ob=new A;

    $this->tab = $var;

  }

    public function C(){

     return $this->D($this->tab, $this->ob->getVar());

      }

  public function D($l, $j){

    if(is_array($l) && isset($j)){

      print 'yes';

  } else { 

    print 'no';

  }

  }

}

$obb = new A;
$obb->setVar('onetwo');
$k = $obb->arr();
$obbb = new B($k);
$obbb->C();


?>

Answer 1

First, for the sake of convention your B class should declare a private variable of $obj, but that is not necessary in PHP.

Second, your B class is just creating a new instance of A in its constructor. So you have two different A classes. The once inside B never has its index property populated.

If you wanted to have the A object created outside the B object you’ll have to pass it in like this:

$obbb = new B($k, $obb);

So now your new B constructor is something like this:

public function __construct($var, $someObject){

    if (!empty($someObject)) {
        $this->ob = $someObject;
    }
    else {
        $this->ob=new A;
    }

    $this->tab = $var;

}