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Old 10-30-2008, 06:42 AM   #1
adilturbo
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Registered: Jun 2006
Location: morocco
Posts: 195

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upcasting in php5


Hello,

i want to translate this code of java to PHP5:

Code:
interface I{
  //...
  abstract void methode1();
}

abstract class A implements I{
  void methode1(){
      methode2();
  }

  abstract void methode2();
}

class C extends A{
  void methode2(){
   //do some...
  }
}

i want to use this this way:

Code:
I i=new A(); //here is implicit upcasting
i.methode1(); //  this methode will implecitely call methode2 of class A
how can i do upcasting in PHP5?

thanks in advance.
 
Old 11-02-2008, 11:01 PM   #2
darkbolt
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Registered: Sep 2005
Distribution: Gentoo, Debian, FreeBSD
Posts: 3

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If I'm understanding you right, what you want is something like

PHP Code:
<?php
class A{
   function 
foo(){
       echo(
'foo');
   }
}

class 
extends A{
    function 
foobar(){
        
parent::foo();
        echo(
'bar');
    }
}
$i = new B();
$i.foobar();
?>
Note, not tested, just written off the top of my head as I was reading this. ymmv.
 
Old 11-03-2008, 05:57 AM   #3
adilturbo
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Registered: Jun 2006
Location: morocco
Posts: 195

Original Poster
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Hello,

thanks for the replay.

i want to do upcasting. in java or c++ if class A inherits from class B this statement is true:

B b= new A();

i do not know how to do it in PHP.
 
Old 11-03-2008, 01:11 PM   #4
darkbolt
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Registered: Sep 2005
Distribution: Gentoo, Debian, FreeBSD
Posts: 3

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PHP is dynamically typed, so you don't have to declare that it is a B even though you're creating an A, just simply create the A

PHP Code:
$a = new A(); 
 
Old 11-04-2008, 05:17 AM   #5
adilturbo
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Registered: Jun 2006
Location: morocco
Posts: 195

Original Poster
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Ok thank you so much.

cheers.
 
  


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