Ahh damn - minor omission - add a '( )' after myclass constructor name :-)
AndrewH
----- Original Message -----
From: "Andrew Halliday" <[EMAIL PROTECTED]>
To: "John LYC" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Monday, March 05, 2001 2:47 PM
Subject: Re: [PHP] simple OO question
> No, you cant do this as you coded it, however minor alterations will allow
> this.
> Last time i checked, you couldnt initialise variables in object scope ...
> you can only declare them. This makes sense, because thats what the
> constructor is for.
>
> Altered code for what you want to do is as follows:
>
>
>
>
> class myclass{
> var $fields;
> var $columns;
>
> function myclass { // constructor
> $this->fields = mysql_list_fields("database1", "table1", $link);
> $this->columns = mysql_num_fields($fields);
> }
>
> // all code must be declared in a function !! - This isnt Java Script :)
> function doSomething() {
> for ($i = 0; $i < $this->columns; $i++) {
> var mysql_field_name($this->fields, $i);
> }
> }//function doSomething()
> }//class
>
>
> $myobj = new myclass(); // creates object and runs constructor (see
above)
> $myobj->doSomething(); // do whatever you want the object to do
>
>
>
> Andrew H
>
>
>
>
> > class myclass{
> >
> > $fields = mysql_list_fields("database1", "table1", $link);
> > $columns = mysql_num_fields($fields);
> >
> > for ($i = 0; $i < $columns; $i++) {
> > var mysql_field_name($fields, $i);
> > }
> >
> > }//class
> >
> > now.. can i do this?
> > is there a performnance issue here?
> > can i put this in the constructor?
> >
> > john
> >
> >
> >
> >
> > Andrew Halliday wrote:
> >
> > > yes you can do all of this
> > >
> > > but in no OO language so far have i seen the ability to access a
> variable
> > > inside a method...you would have to do this:
> > >
> > > class myclass
> > > {
> > > var $myvar;
> > > function setmyvar($newmyvar)
> > > {
> > > $this->myvar = $newmyvar;
> > > }
> > > }
> > >
> > > Then you could do this:
> > >
> > > $myclassObj = new myclass();
> > > $myclassObj->setmyvar(10);
> > > echo $myclassObj->myvar;
> > >
> > > This would print '10'...
> > >
> > > Cut and paste that exact program in and it should be a working
> demonstration
> > > ...
> > >
> > > You should read the php manual more ...
> > > see
> > > www.php.net
> > >
> > > AndrewH
> > > ----- Original Message -----
> > > From: "John LYC" <[EMAIL PROTECTED]>
> > > To: "PHP List" <[EMAIL PROTECTED]>
> > > Sent: Monday, March 05, 2001 1:36 PM
> > > Subject: [PHP] simple OO question
> > >
> > > > can i do this..?
> > > >
> > > > //declaring class
> > > >
> > > > class myclass{
> > > >
> > > > //declaring properties
> > > > ...
> > > > ....
> > > >
> > > > //declaring methods..
> > > > function mymethod(){
> > > >
> > > > //can i declared variable in method?
> > > > var $myvar;
> > > > ...
> > > > //do something
> > > >
> > > > }//end of mymethod
> > > >
> > > > ///////////////////
> > > >
> > > > if yes, do i access myvar like this.
> > > > $item = new myclass;
> > > > print $item->mymethod()->myvar;
> > > >
> > > >
> > > > thanks
> > > > john
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --
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>
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