Used in conjunction with classes.
class Foo
{
var bar;
function Foo($bar)
{
$this->bar = $bar;
}
}
$foo = new Foo("foobar");
echo $foo->bar; // "foobar"
For interests sake here's the same in C++ (correct me if I'm wrong it's been
a long time since I used C++ or pointers).
class Foo
{
char *bar;
function Foo(bar)
{
this.bar = bar;
}
}
Foo *foo = new Foo("foobar");
cout << (*foo).bar; // "foobar"
// which also works as.
cout << foo->bar; // "foobar"
-----Original Message-----
From: Stephano Mariani [mailto:[EMAIL PROTECTED]]
Sent: Friday, March 08, 2002 12:57
To: 'Kearns, Terry'; 'S.Murali Krishna'; 'Jack'
Cc: [EMAIL PROTECTED]
Subject: RE: [PHP] What is "->" mean in php?
PHP uses -> as C++ uses ".", since PHP already uses "." for strings.
Stephano Mariani
> -----Original Message-----
> From: Kearns, Terry [mailto:[EMAIL PROTECTED]]
> Sent: Friday, 8 March 2002 12:28 AM
> To: 'S.Murali Krishna'; Jack
> Cc: [EMAIL PROTECTED]
> Subject: RE: [PHP] What is "->" mean in php?
>
> Because I'm not a hacker on the PHP engine, I don't really know but I
also
> saw this symbol when learning C++ recently. It is used in C++ as a
> shortcut
> to dereferencing and accessing an objects properties/methods on
objects
> which are on the free store (heap). Normally C++ uses the dot operator
to
> access methods/properties (eg. "foo.do()"), but when the object needs
to
> first be dereferenced, then "foo->do()" can be used as a shortcut to
> "(*foo).do()".
>
> Of course, this doesn't help you at all does it :) But I thought it
was an
> interesting connection to C++ and maybe hints at how PHP internally
> manages
> objects. Perhaps it's just a coincidence.
>
> [TK]
>
> > -----Original Message-----
> > From: S.Murali Krishna [mailto:[EMAIL PROTECTED]]
> > Sent: Monday, 4 March 2002 9:48 PM
> > To: Jack
> > Cc: [EMAIL PROTECTED]
> > Subject: Re: [PHP] What is "->" mean in php?
> >
> >
> >
> > If you have any Object Oriented Programming experience, then
> > you may not had asked this. Its a operator to access methods,
> > and variables inside a instance of a class , in which the
> > variable before "->" is the instance of the class and the
> > latter is a method or variable of that class. This is what I
> > know, if you have any explanatory docs, pls let me know.
> >
> >
> >
> > On Mon, 4 Mar 2002, Jack wrote:
> >
> > > Dear all
> > > There is one symbol in PHP that i always see is "->", could
> > anyone pls
> > > tell me what is this, and what does that do? Here is the
> > statement i
> > > saw could some pls explain what it means?
> > >
> > > if (!empty($row->usd_period)
> > >
> > > Thx a lot
> > > Jack
> > > [EMAIL PROTECTED]
> > >
> > >
> > >
> > > --
> > > PHP General Mailing List (http://www.php.net/)
> > > To unsubscribe, visit: http://www.php.net/unsub.php
> > >
> >
> > <[EMAIL PROTECTED]>
> > -------------------------------------------------------------------
> > We must use time wisely and forever realize that the time is
> > always ripe to do right."
> >
> > -- Nelson Mandela
> > -------------------------------------------------------------------
> >
> >
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