Using array_push in method in php

Question

The addRecipients use push_array but it does not work. What am I doing wrong here??

In class.emailer.php

class Emailer
{
public $sender;
public $recipien         


        

Answer 1

You need to call the parent's constructor from ExtendedEmailer's constructor.

class ExtendedEmailer extends emailer
{
  function  __construct(){
    parent::__construct(null); 
  }

  // ...
}

otherwise $recipients is never initialized as an array.

Answer 2

You've missed to the call the parent constructor in the child's constructor

class ExtendedEmailer extends emailer
{
    function  __construct(){
        //overwriting __contruct here
        parent::__construct('dummy_sender@sender.com');
    }
}

should fix this issue.

Answer 3

in file "class.emailer.php" just do

public $recipients = array();

instead of just the kinda naked

public $recipients;

That's all, and as a sur-plus, you're free to fill up your constructors as you desire. - What do you think about that?

Regards, M.

Answer 4

The problem is that you're overriding the Email class's constructor and never calling it (parent::__construct()). Either call the parent constructor in the ExtendedEmailer class constructor, or remove the constructor altogether from ExtendedEmailer if you're not actually using it (which in your sample code, you're not).

Answer 5

You are probably not initiating $recipients when you rewrote the constructor.

class Emailer {
    public $recipients = array();

    function __construct($sender)
    {
        $this->sender = $sender;
    }

Should do it. Check your warnings for

Warning: array_push() expects parameter 1 to be array, null given in ...