accesing to members of objects

[julian_m]

A short piece of code which i'm having problems with:

class ClsX{

var $F_name;
var $F_array_of_obj = array();

function ClsX(&$obj, $name){
//Here I add an object reference to an array. Note that all objects
inside $F_array_of_obj will be of X class or null values
$this->F_array_of_o bj[] = $obj;
$this->F_name = $name;
$this->ListParents( );
}


function ListParents(){
foreach ($this->F_array_of_o bj as $obj) {
echo "Te name of the parent is: ". $obj->F_name;
}
}
}//class


$clsX1 = new ClsX("","name1" );

$clsX2= new ClsX($clsX1, "name2");

I thought that this code would output

"the name of the parent is name1"

but it actually prints

""the name of the parent is"

so the problem is that I can't acces to de object's data inside the
array.
Any hints?

regards - jm

[Jerry Stuckle]

Re: accesing to members of objects

julian_m wrote:[color=blue]
> A short piece of code which i'm having problems with:
>
> class ClsX{
>
> var $F_name;
> var $F_array_of_obj = array();
>
> function ClsX(&$obj, $name){
> //Here I add an object reference to an array. Note that all objects
> inside $F_array_of_obj will be of X class or null values
> $this->F_array_of_o bj[] = $obj;
> $this->F_name = $name;
> $this->ListParents( );
> }
>
>
> function ListParents(){
> foreach ($this->F_array_of_o bj as $obj) {
> echo "Te name of the parent is: ". $obj->F_name;
> }
> }
> }//class
>
>
> $clsX1 = new ClsX("","name1" );
>
> $clsX2= new ClsX($clsX1, "name2");
>
> I thought that this code would output
>
> "the name of the parent is name1"
>
> but it actually prints
>
> ""the name of the parent is"
>
> so the problem is that I can't acces to de object's data inside the
> array.
> Any hints?
>
> regards - jm
>[/color]


Do you have error reporting enabled? Which version of PHP?

On 5.0.3 I get:

Fatal error: Cannot pass parameter 1 by reference in H:\temp\test.ph p on
line 25

This is referencing the line:

$clsX1 = new ClsX("","name1" )

Which is valid - "" isn't a variable, so you can't reference it.

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

[julian_m]

Re: accesing to members of objects


Jerry Stuckle wrote:[color=blue]
> julian_m wrote:[color=green]
> > A short piece of code which i'm having problems with:
> >
> > class ClsX{
> >
> > var $F_name;
> > var $F_array_of_obj = array();
> >
> > function ClsX(&$obj, $name){
> > //Here I add an object reference to an array. Note that all objects
> > inside $F_array_of_obj will be of X class or null values
> > $this->F_array_of_o bj[] = $obj;
> > $this->F_name = $name;
> > $this->ListParents( );
> > }
> >
> >
> > function ListParents(){
> > foreach ($this->F_array_of_o bj as $obj) {
> > echo "Te name of the parent is: ". $obj->F_name;
> > }
> > }
> > }//class
> >
> >
> > $clsX1 = new ClsX("","name1" );
> >
> > $clsX2= new ClsX($clsX1, "name2");
> >
> > I thought that this code would output
> >
> > "the name of the parent is name1"
> >
> > but it actually prints
> >
> > ""the name of the parent is"
> >
> > so the problem is that I can't acces to de object's data inside the
> > array.
> > Any hints?
> >
> > regards - jm
> >[/color]
>
>
> Do you have error reporting enabled? Which version of PHP?
>
> On 5.0.3 I get:
>
> Fatal error: Cannot pass parameter 1 by reference in H:\temp\test.ph p on
> line 25
>
> This is referencing the line:
>
> $clsX1 = new ClsX("","name1" )
>
> Which is valid - "" isn't a variable, so you can't reference it.
>[/color]



Well, actually I've solved the problem that I had

for ($i = 1; $i <= count($this->F_array_of_obj ); $i++) {
$object = $this->F_array_of_o bj[($i-1)];
$object->WhatEverObject Function();
}

Note that I come from a Delphi background, where all object call should
be preceded by a typecast. I mean:
TYPEOFOBJ($obje ct)->WhatEverObject Function();
In this way, I'm saying "i'm sure that $object has a function named
WhatEverObjectF unction()"

BTW, What happens if $object doesn't has WhatEverObjectF unction()?

regards - jm

[Jerry Stuckle]

Re: accesing to members of objects

julian_m wrote:[color=blue]
> Jerry Stuckle wrote:
>[color=green]
>>julian_m wrote:
>>[color=darkred]
>>>A short piece of code which i'm having problems with:
>>>
>>>class ClsX{
>>>
>>>var $F_name;
>>>var $F_array_of_obj = array();
>>>
>>>function ClsX(&$obj, $name){
>>> //Here I add an object reference to an array. Note that all objects
>>>inside $F_array_of_obj will be of X class or null values
>>> $this->F_array_of_o bj[] = $obj;
>>> $this->F_name = $name;
>>> $this->ListParents( );
>>>}
>>>
>>>
>>>function ListParents(){
>>> foreach ($this->F_array_of_o bj as $obj) {
>>> echo "Te name of the parent is: ". $obj->F_name;
>>> }
>>>}
>>>}//class
>>>
>>>
>>>$clsX1 = new ClsX("","name1" );
>>>
>>>$clsX2= new ClsX($clsX1, "name2");
>>>
>>>I thought that this code would output
>>>
>>>"the name of the parent is name1"
>>>
>>>but it actually prints
>>>
>>>""the name of the parent is"
>>>
>>>so the problem is that I can't acces to de object's data inside the
>>>array.
>>>Any hints?
>>>
>>>regards - jm
>>>[/color]
>>
>>
>>Do you have error reporting enabled? Which version of PHP?
>>
>>On 5.0.3 I get:
>>
>>Fatal error: Cannot pass parameter 1 by reference in H:\temp\test.ph p on
>>line 25
>>
>>This is referencing the line:
>>
>> $clsX1 = new ClsX("","name1" )
>>
>>Which is valid - "" isn't a variable, so you can't reference it.
>>[/color]
>
>
>
>
> Well, actually I've solved the problem that I had
>
> for ($i = 1; $i <= count($this->F_array_of_obj ); $i++) {
> $object = $this->F_array_of_o bj[($i-1)];
> $object->WhatEverObject Function();
> }
>
> Note that I come from a Delphi background, where all object call should
> be preceded by a typecast. I mean:
> TYPEOFOBJ($obje ct)->WhatEverObject Function();
> In this way, I'm saying "i'm sure that $object has a function named
> WhatEverObjectF unction()"
>
> BTW, What happens if $object doesn't has WhatEverObjectF unction()?
>
> regards - jm
>[/color]

You get a run-time error and processing of the php stops.

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