OO help

[moon 111]

Can someone please explain to me why the following isn't working?

 

<?php

Class Nested {

    public $narray = array();
    public $text;

    public function __construct($text) {
    
        $this->text = $text;
    }
    
    public function add(Nested $nested) {
    
        $array[] = $nested;
    }
    
    public function display() {
    
        echo $this->text;
    }
}

$nested = new Nested('First1');
$nested->add(new Nested('Second1'));
$nested->add(new Nested('Second2'));

$nested->narray[0]->display();

?>

 

This is the error:

 

Fatal error: Call to a member function display() on a non-object in C:\wamp\www\nested.php on line 28

 

Thanks!

[DarkWater]

<?php
class Nested {
    public $nest = array();
    private $text;

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

    public function add(Nested $nested) {
        $this->nest[] = $nested;
    }

    public function getText() {
        return $this->text;
    }
}

$n = new Nested('foo');
$n->add(new Nested('one'));
$n->add(new Nested('two'));
echo $n->nest[0]->getText();

 

There you go.

[Daniel0]

Since when did explaining something become the same as giving a solution?

 

Teacher: Find x in: 5x=10

Student: How do you do that?

Teacher: 2

 

[DarkWater]

Since when did explaining something become the same as giving a solution?

 

Teacher: Find x in: 5x=10

Student: How do you do that?

Teacher: 2

 

 

To be honest, I had to write up the code anyway to test it out, but I see your point.  Here's an explanation:

 

When you used the add() method, you were giving a local function variable named $array a new element.  In order for the object to actually have it, you'd need to use $this->narray instead of $array.

[moon 111]

Ah, yes, I just noticed that. Thanks.