Re: [PHP] overloading members. aghhh!!!
Peter Ford wrote:
> Jochem Maas wrote:
>> Kiketom wrote:
>>> Hi all.
>>> Yesterday i have looking for the overloading members
>>>
>>> Member overloading
>>> void __set ( string name, mixed value )
>>> mixed __get ( string name )
>>>
>>> As an example i put this code:
>>>
>>> class foo
>>> {
>>> private $ID;
>>> private $Name;
>>> private $LastName;
>> when you declare these three as 'real' members, __get() and __set()
>> will no longer be called - they are only called for non-existent members.
>>
> Nope, that's not true.
Indeed. I did post back to say I was talking .
If the members are private, or otherwise inaccessible,
I believe that this was not always the case (i.e. that in
older versions private members behaved the same way as public
members with regard to __get()/__set() - I'm not sure but I think so)
> __get() and __set() are called - I've used this in a few places to provide a
> "read-only" member variable, e.g.:
>
> class foo
> {
> private $bar=0;
>
> public function __get($nm)
> {
> return $this->$nm;
> }
>
> public function __set($nm,$val)
> {
> if ($nm != 'bar')
> {
> $this->$nm = $val;
> }
> }
> }
>
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] overloading members. aghhh!!!
Jochem Maas wrote:
> Kiketom wrote:
>> Hi all.
>> Yesterday i have looking for the overloading members
>>
>> Member overloading
>> void __set ( string name, mixed value )
>> mixed __get ( string name )
>>
>> As an example i put this code:
>>
>> class foo
>> {
>> private $ID;
>> private $Name;
>> private $LastName;
>
> when you declare these three as 'real' members, __get() and __set()
> will no longer be called - they are only called for non-existent members.
>
Nope, that's not true. If the members are private, or otherwise inaccessible,
__get() and __set() are called - I've used this in a few places to provide a
"read-only" member variable, e.g.:
class foo
{
private $bar=0;
public function __get($nm)
{
return $this->$nm;
}
public function __set($nm,$val)
{
if ($nm != 'bar')
{
$this->$nm = $val;
}
}
}
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] overloading members. aghhh!!!
Ok, no problem ;) "Jochem Maas" <[EMAIL PROTECTED]> escribió en el mensaje news:[EMAIL PROTECTED] > Kiketom wrote: >> Then if i make this >> >> $foo = new foo(); >> $foo->ID = 12; >> >> what is happening?? >> if __Set and __Get only works if a member isn't exits, >> >> How come I do this? >> $foo->ID = 12; >> if the member $ID is private??? >> >> I thought that this was possible because i have declared the two method >> set >> and get :P >> > > ignore my previous reply - it seems it was completely wrong. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] overloading members. aghhh!!!
Kiketom wrote: > Then if i make this > > $foo = new foo(); > $foo->ID = 12; > > what is happening?? > if __Set and __Get only works if a member isn't exits, > > How come I do this? > $foo->ID = 12; > if the member $ID is private??? > > I thought that this was possible because i have declared the two method set > and get :P > ignore my previous reply - it seems it was completely wrong. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] overloading members. aghhh!!!
Then if i make this
$foo = new foo();
$foo->ID = 12;
what is happening??
if __Set and __Get only works if a member isn't exits,
How come I do this?
$foo->ID = 12;
if the member $ID is private???
I thought that this was possible because i have declared the two method set
and get :P
"Jochem Maas" <[EMAIL PROTECTED]> escribió en el mensaje
news:[EMAIL PROTECTED]
> Kiketom wrote:
>> Hi all.
>> Yesterday i have looking for the overloading members
>>
>> Member overloading
>> void __set ( string name, mixed value )
>> mixed __get ( string name )
>>
>> As an example i put this code:
>>
>> class foo
>> {
>> private $ID;
>> private $Name;
>> private $LastName;
>
> when you declare these three as 'real' members, __get() and __set()
> will no longer be called - they are only called for non-existent members.
>
> so instead dump your data in an array or something
>
> private $data = array(
> 'ID' => null,
> 'Name' => null,
> 'LastName' => null,
> );
>
>>
>> private function __get($var)
>> {
>> return $var;
>
> there is no such thing as 'implicit class scope' $var will not refer to
> $this->var as you seem to expect.
>
> return isset($this->data[$var]) ? $this->data[$var] : null;
>
>> }
>>
>> private function __set($var,$value)
>> {
>> $var = $value;
>
> same thing here.
>
> if (array_key_exists($var, $this->data)
> $this->data[$var] = $value;
>
>> }
>> }
>>
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] overloading members. aghhh!!!
Kiketom wrote:
> Hi all.
> Yesterday i have looking for the overloading members
>
> Member overloading
> void __set ( string name, mixed value )
> mixed __get ( string name )
>
> As an example i put this code:
>
> class foo
> {
> private $ID;
> private $Name;
> private $LastName;
when you declare these three as 'real' members, __get() and __set()
will no longer be called - they are only called for non-existent members.
so instead dump your data in an array or something
private $data = array(
'ID' => null,
'Name' => null,
'LastName' => null,
);
>
> private function __get($var)
> {
> return $var;
there is no such thing as 'implicit class scope' $var will not refer to
$this->var as you seem to expect.
return isset($this->data[$var]) ? $this->data[$var] : null;
> }
>
> private function __set($var,$value)
> {
> $var = $value;
same thing here.
if (array_key_exists($var, $this->data)
$this->data[$var] = $value;
> }
> }
>
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] overloading members. aghhh!!!
Ok, this is a great solution
Thanks ;)
"Robert Cummings" <[EMAIL PROTECTED]> escribió en el mensaje
news:[EMAIL PROTECTED]
> On Mon, 2007-11-19 at 11:25 +0100, Kiketom wrote:
>> Hi all.
>> Yesterday i have looking for the overloading members
>>
>> Member overloading
>> void __set ( string name, mixed value )
>> mixed __get ( string name )
>>
>> As an example i put this code:
>>
>> class foo
>> {
>> private $ID;
>> private $Name;
>> private $LastName;
>>
>> private function __get($var)
>> {
>> return $var;
>> }
>>
>> private function __set($var,$value)
>> {
>> $var = $value;
>> }
>> }
>>
>>
>> $foo = new foo();
>> $foo->ID = 1;
>> $foo->Name = "Henry";
>> $foo->LastName = "Ford",
>>
>>
>> that's horrible!!!
>>
>> And if i want to validate that ID > 0??
>>
>> i have to put this validation in the function __set for each property??
>> private function __set($var,$value)
>> {
>> if ($var = 'ID')
>> {
>> //validate that ID is > 0
>> }
>> $var = $value;
>> }
>>
>>
>> Not exists a better method to manage the properties in a class?
>>
>> Like in C#
>>
>> private int _ID;
>>
>> public int ID
>> {
>> get { return _ID;}
>> set
>> {
>> if (value > 0)
>> {
>> _ID = value;
>> }
>> else
>> {
>> //Exception
>> }
>> }
>> }
>
> Well, if you really want to, you can do the following:
>
>
> class foo
> {
>private $ID;
>private $Name;
>private $LastName;
>
>private function __get( $var )
>{
>if( method_exists( $this, '___get_'.$var ) )
>{
>return $this->{'___get_'.$var}();
>}
>else
>{
>return $this->{$var};
>}
>}
>
>private function __set( $var, $value )
>{
>if( method_exists( $this, '___get_'.$var ) )
>{
>return $this->{'___set_'.$var}( $value );
>}
>else
>{
>return ($this->{$var} = $value);
>}
>}
>
>private function ___get_ID()
>{
>}
>
>private function ___set_ID( $value )
>{
>}
> }
>
> ?>
>
> But I wouldn't.
>
> Cheers,
> Rob.
> --
> ...
> SwarmBuy.com - http://www.swarmbuy.com
>
>Leveraging the buying power of the masses!
> ...
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] overloading members. aghhh!!!
On Mon, 2007-11-19 at 06:27 -0500, Robert Cummings wrote:
> On Mon, 2007-11-19 at 11:25 +0100, Kiketom wrote:
> > Hi all.
> > Yesterday i have looking for the overloading members
> >
> > Member overloading
> > void __set ( string name, mixed value )
> > mixed __get ( string name )
> >
> > As an example i put this code:
> >
> > class foo
> > {
> > private $ID;
> > private $Name;
> > private $LastName;
> >
> > private function __get($var)
> > {
> > return $var;
> > }
> >
> > private function __set($var,$value)
> > {
> > $var = $value;
> > }
> > }
> >
> >
> > $foo = new foo();
> > $foo->ID = 1;
> > $foo->Name = "Henry";
> > $foo->LastName = "Ford",
> >
> >
> > that's horrible!!!
> >
> > And if i want to validate that ID > 0??
> >
> > i have to put this validation in the function __set for each property??
> > private function __set($var,$value)
> > {
> > if ($var = 'ID')
> > {
> > //validate that ID is > 0
> > }
> > $var = $value;
> > }
> >
> >
> > Not exists a better method to manage the properties in a class?
Why don't you use a switch btw?
Cheers,
Rob.
--
...
SwarmBuy.com - http://www.swarmbuy.com
Leveraging the buying power of the masses!
...
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] overloading members. aghhh!!!
On Mon, 2007-11-19 at 11:25 +0100, Kiketom wrote:
> Hi all.
> Yesterday i have looking for the overloading members
>
> Member overloading
> void __set ( string name, mixed value )
> mixed __get ( string name )
>
> As an example i put this code:
>
> class foo
> {
> private $ID;
> private $Name;
> private $LastName;
>
> private function __get($var)
> {
> return $var;
> }
>
> private function __set($var,$value)
> {
> $var = $value;
> }
> }
>
>
> $foo = new foo();
> $foo->ID = 1;
> $foo->Name = "Henry";
> $foo->LastName = "Ford",
>
>
> that's horrible!!!
>
> And if i want to validate that ID > 0??
>
> i have to put this validation in the function __set for each property??
> private function __set($var,$value)
> {
> if ($var = 'ID')
> {
> //validate that ID is > 0
> }
> $var = $value;
> }
>
>
> Not exists a better method to manage the properties in a class?
>
> Like in C#
>
> private int _ID;
>
> public int ID
> {
> get { return _ID;}
> set
> {
> if (value > 0)
> {
> _ID = value;
> }
> else
> {
> //Exception
> }
> }
> }
Well, if you really want to, you can do the following:
{'___get_'.$var}();
}
else
{
return $this->{$var};
}
}
private function __set( $var, $value )
{
if( method_exists( $this, '___get_'.$var ) )
{
return $this->{'___set_'.$var}( $value );
}
else
{
return ($this->{$var} = $value);
}
}
private function ___get_ID()
{
}
private function ___set_ID( $value )
{
}
}
?>
But I wouldn't.
Cheers,
Rob.
--
...
SwarmBuy.com - http://www.swarmbuy.com
Leveraging the buying power of the masses!
...
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
