Hi,

I'm trying to learn how PHP classes work. I'm very familiar with C++
and such, but something that I thought should work is giving me
grief. Basically, this is what I have.

class myclass {
private $somevar;

public __construct($value) {
$this->$somevar = $value;
}
}

Then, in my other code I have:

require("path/to/library.php");

$obj = new $myclass("assign it this");


When I attempt to load this page in my browser, I'm greeted with this
error:

Cannot access empty property in /usr/local/www/data-dist/mch/library/
generic_table.php on line 19

This is coming from the variable assignment in my c-tor in the class
definition. Why isn't this working and how would I make it work?

Andy

Andrew Falanga wrote:
> Hi,
>
> I'm trying to learn how PHP classes work. I'm very familiar with C++
> and such, but something that I thought should work is giving me
> grief. Basically, this is what I have.
>
> class myclass {
> private $somevar;
>
> public __construct($value) {
> $this->$somevar = $value;
> }
> }
>
> Then, in my other code I have:
>
> require("path/to/library.php");
>
> $obj = new $myclass("assign it this");
>
>
> When I attempt to load this page in my browser, I'm greeted with this
> error:
>
> Cannot access empty property in /usr/local/www/data-dist/mch/library/
> generic_table.php on line 19
>
> This is coming from the variable assignment in my c-tor in the class
> definition. Why isn't this working and how would I make it work?
>
> Andy
>

Andy,

Just minor problem - but a common one. It should be

$this->somevar = $value;

--
==================
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attglobal.net
==================

On Feb 23, 2:43 pm, Jerry Stuckle <jstuck...@attglobal.net> wrote:
> Andrew Falanga wrote:
> > Hi,
>
> > I'm trying to learn how PHP classes work. I'm very familiar with C++
> > and such, but something that I thought should work is giving me
> > grief. Basically, this is what I have.
>
> > class myclass {
> > private $somevar;
>
> > public __construct($value) {
> > $this->$somevar = $value;
> > }
> > }
>
> > Then, in my other code I have:
>
> > require("path/to/library.php");
>
> > $obj = new $myclass("assign it this");
>
> > When I attempt to load this page in my browser, I'm greeted with this
> > error:
>
> > Cannot access empty property in /usr/local/www/data-dist/mch/library/
> > generic_table.php on line 19
>
> > This is coming from the variable assignment in my c-tor in the class
> > definition. Why isn't this working and how would I make it work?
>
> > Andy
>
> Andy,
>
> Just minor problem - but a common one. It should be
>
> $this->somevar = $value;
>

WOW! That was minor. Thanks much. I was nearly beginning to pull
out what is left of my hair.

Andy