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From: "J.O. Aho" <user@example.net>
Newsgroups: comp.lang.php
Subject: Re: Globalizing vars in class methods doesnt seem to work, var disappears after global, var is inaccessible in other methods/funcs
Date: Sun, 05 Aug 2012 08:28:02 +0200
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On 05/08/12 06:08, J. Frank Parnell wrote:
> On Saturday, August 4, 2012 11:45:35 AM UTC-7, Jerry Stuckle wrote:
>> On 8/4/2012 2:24 PM, Jerry Stuckle wrote:
>
>>
>> An addition option I forgot to mention - you could also use the
>>
>> singleton pattern as M. Strobel referenced.  However, if you do, you
>>
>> should always have a default parameter in the call so you can use
>>
>> something other than the singleton when you need to.
>
> Ok, I read a little on the singleton, that does seem like a good way of doing it.  What I wound up doing, before you guys replied, was just $this->var = 'something' and then doing $t->var where I needed that 'something'.  Which I think make sense for OO? Because it is somewhat logical for 'something' to be part of my class, in my situation.  Although 'something' is a different object, eg, an api class. My class is a child class of a controller in an MVCish framework.
>
> I just found out that this works
> class test{
> 	function __construct(){
> 		$this->makevar();
> 	}
> 	function makevar(){
> 	global $var;
> 		$var = 'something';// actually, $var = new something();
> 	}	
> }//class
>
> $t = new test;
> echo '<hr>outside class: '.$var;//works  And I assume would work in a unrelated function if I globalled it in there.
>
>> always have a default parameter in the call so you can use
>> something other than the singleton when you need to
>
> not sure what this means

class test {
	private $var = null;

	function __construct($invalue = null) {
		$this->var = $invalue;
	}
}

IMHO it's better to have functions if you want to manipulate values in a 
class, there are many ways to do it, but the simplest would just be:

	function getVar() {
		return $this->var;
	}

	function setVar($invalue) {
		// verify that the input is of the right form
		// then update the value
		$this->var = $invalue;
	}

-- 

  //Aho