creating an object inside a Class

[jaikar]

Hi,

 

is it possible to create an object inside a class?...

 

say i have 2 class...

 

class a {

  var $val;

   some code

}

 

class b {

$myobject = new a;

$myobject->val=1;

...............

}

 

will the above work ??... first of all .. is it possible to do like above ?....

 

Please advice..... in my code i used something like this but its not working..

 

 

Jaikar

 

[najibk]

Yeah what you have done should definitely work.

 

If it's not working, post some code and maybe we can suggest what may be going wrong.  Also, make sure you PHP version is not something that isn't too old.  I wouldn't necessarily recommend using anything object oriented in PHP 3 or earlier.

[idevlabsdotcom]

it should work fine.  this code outputs "WOOT":

<?php

$test = new bar("WOOT");

class foo
{
var $test;

function foo($test){
	$this->test = $test;
}

function print_object(){
	echo $this->test;
}
}

class bar
{
var $object;

function bar($test){
	$this->object = new foo($test);

	$this->object->print_object();
}
}

?>

post your code so we can give you some guidance.

[jaikar]

Thanks najibk , idevlabsdotcom ....

 

my code was similar to what idevlabsdotcom gave... now i can say i made a mistake....

 

but why $this->test = $test is inside a function ?... why not set outside the function.. what is where i got the error....

 

i set the value outside the function.. like

 

class foo

{

var $test;

 

            $this->test = $test;  ???????????????//

 

function print_object(){

echo $this->test;

}

}

 

why i am getting the error if i do thin.....  ???

[jaikar]

 

can anyone please advice about this..

 

why $this->test=$test .. should in a function .. y not outside the function ?

 

Thanks !..

[jaikar]

 

can anyone explain ... why in a class this declaration $this->test=$test  should be in a fuction .. why not outside the function...

 

Thanks in advance

[trq]

Because it makes no sense outside of a function. You can't really assign anything to it outside of a method.

[ignace]

well actually that is a very good question xD, it probably has something to do with those 0's and 1's called bits xD, and ofcourse the class scope which only allows to declare properties (which represent your variables) or methods (which represent functions)

 

for more information on programming in OOP:

http://www.phpfreaks.com/tutorials/150/0.php