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Posted by Tyno Gendo on 10/10/07 13:40
BoneIdol wrote:
> On 10 Oct, 14:18, ZeldorBlat <zeldorb...@gmail.com> wrote:
>> 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;
>> }
>>
>> }
>
> Heh, looking back I forgot my $this->s. Oops.
>
> Being honest I only just started looking into more advanced class
> handling today, including overloading. Wish the php.net examples were
> a bit clearer, wouldn't look like such an idiot now. ;)
>
> Oh well, kept me entertained for a little while at least.
>
Join the club, I'm trying to learn proper class/pattern usage myself but
there don't appear to be too many easy to understand or full-blown
examples that I could find... I bought a Java Patterns book instead and
started re-working them for PHP instead.
I've still to create a really good class orientated site, I often start
with classes, don't document anything, forget about the stuff I've done
and end up inline coding most of the stuff i want by the end of the
project :-/
Think i need to spent more time designing and look up uml etc./document
stuff better before I begin. hehe.
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