i am trying to make a array of a object in php - php

Question

I'm trying to make an array of Spells.
My current code
class Spell
{
public $bomb = 0;
public $fire = 0;
function Spell()
{
$this->bomb =0;
$this->fire =0;
}
}
And I declare the object spell on my game class like this
class game
{
public $Spell=array();
function Game()
{
$this->Spell[0] = new Spell();
}
function s()
{
$this->Spell[1]->$bomb = $load($x)
$this->Spell[1]->$fire = $load($x);
$this->Spell[2]->$bomb = $load($y)
$this->Spell[3]->$bomb = $load($z)
}
}
It returns this error -- Warning: Creating default object from empty value in...
I guess this isn't the best way to create an array of objects. How to do it properly?
EDIT:
x y z, just return strings

Answer 1

The problem is that you have not created objects for $this->Spell[1], $this->Spell[2] and $this->Spell[3]. If you change your Game() constructor to this:
function Game()
{
for ($i = 1; $i <= 3; $i++) {
$this->Spell[$i] = new Spell();
}
}
It should probably work fine.

Answer 2

You seem to have more than just one problems in your code.
However, I will discuss the one you have asked the question for.
Instead of
$this->Spell[1]->$bomb = something;
Use
$this->Spell[1]->bomb = something;
Second, What do you intend to do by using $load($y)?
If you're using a function named "load", use load($y)

Answer 3

you must create object, then use it, look:
class Spell
{
public $bomb = 0;
public $fire = 0;
function __construct()
{
$this->bomb =0;
$this->fire =0;
}
}
class game
{
public $Spell=array();
function s()
{
$this->Spell[1] = new Spell();
$this->Spell[1]->bomb = 0 ; //or other value
}
}

Answer 4

<?php
class Spell
{
public $bomb = 0;
public $fire = 0;
function Spell()
{
$this->bomb =0;
$this->fire =0;
}
}
class game
{
public $Spell=array();
function Game($index)
{
$this->Spell[$index] = new Spell();
echo 'constructer called';
}
function s()
{
$this->Spell[1]->bomb = $load($x);
$this->Spell[1]->fire = $load($x);
$this->Spell[2]->bomb = $load($y);
$this->Spell[3]->bomb = $load($z);
}
}
$ob = new game();
//$ob->Game(1); to pass the index for array.
?>

Answer 5

You are using lots of undefined stuff, I would say the half of your script is missing.
I just added the comments down here:
class game
{
public $Spell=array();
function Game()
{
$this->Spell[0] = new Spell();
}
function s()
{
/**
down here you are using these undefined "variables":
$bomb
$load
$x
$y
$z
undefined means, you are using a varible which was not declared. so it´s just null.
I tried to fix it:
**/
$x = 1;
$y = 2;
$z = 3;
$this->Spell[1] = new Spell();
$this->Spell[2] = new Spell();
$this->Spell[3] = new Spell();
$this->Spell[1]->bomb = load($x); // add ;
$this->Spell[1]->fire = load($x);
$this->Spell[2]->bomb = load($y)
$this->Spell[3]->bomb = load($z)
}
}
function load($v)
{
return $v * 2;
}