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Posted by ZeldorBlat on 10/10/07 13:18
On Oct 10, 8:49 am, BoneIdol <leon...@hotmail.com> wrote:
> On 10 Oct, 13:39, Tyno Gendo <tyno.ge...@example.net> wrote:
>
>
>
> > BoneIdol wrote:
> > > Anyway to do it? I know you can use a variable's contents as a
> > > variable name with $$name. With something like this:
>
> > > <?php
> > > function foo($bar)
> > > {
> > > return $bar;
> > > }
>
> > > $name = foo($variable_name);
> > > ?>
>
> > > I'd like the function foo to return a string of the variable name
> > > passed to it, in this case 'variable_name'. A friend of mine who does
> > > C ++ programming says that pointers are the way to go here,
> > > but as far as I know PHP doesn't support them.
>
> > Out of interest, why do you want to do this?
>
> > If there isn't a PHP function (there is get_defined_vars() but I don't
> > think this does what you want) then you could create your own class that
> > manages variables.
>
> > eg.
>
> > class CVar {
> > protected $var_name = '';
> > protected $var_value = '';
> > public function __construct( $name = '', $value = '' ) {
> > $this->var_name = $name;
> > $this->var_value = $value;
> > }
> > public function getName() { return $this->name; }
> > public function getValue() { return $this->value; }
> > public function setName($name) { $this->var_name = $name; }
> > public function setValue($value){ $this->var_value = $value; }
> > }
>
> > function foo($bar) {
> > return $bat->getName();
> > }
>
> > $myvar = new CVar('animal','dog');
> > echo foo( &$myvar );
>
> > OR something like that....
>
> > just curious why ;-)
>
> > ... and now someone will point a really easy way to do it and as well
> > and i'll look a fool... LOL
>
> It's more of a thought experiment than anything else. The idea is to
> be able to define variables in classes on the fly with method
> overloading. (function __get etc.)
>
> So something like...
>
> class foo
> {
> public var $bar;
> private var $_vars = array();
>
> public function __get($var)
> {
> $varname = get_variable_name($var); //Whatever code I need here
> $_vars[$varname] = $var;
> }
>
> }
>
> Note I just made that up off the top of my head and it's not finished
> and doesn't let you work with variables that have already been
> defined.
>
> Really I'm just trying to do it to see if I can. ;)
You don't need this to "define variables in classes on the fly with
method overloading." That's exactly what __get() and __set() are
for. I'm not sure why you need the name of the variable that was
passed to it. In your example above you're using __get() to do what
is supposed to be done with __set().
Don't you really just want something like this:
class Foo {
private $theVars = array();
public function __get($name) {
return $this->theVars[$name];
}
public function __set($name, $val) {
$this->theVars[$name] = $val;
}
}
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