April 23, 2005 | Web Design & Development | Leave a comment
The next logical step in my education of PHP is to learn PHP5′s implementation of OOP. I started that this morning and wrote myself a short, useless script using a couple of the new features in PHP5.
I learned how to use static variables and constructors. Not bad for my first hour. :: cue child’s voice :: I made this:
Class myCounter
{
static $counter = 0;
public $id;
// constructor runs at function open
function __construct()
{
self::$counter++;
$this->id = self::$counter;
}
}
Class myObj extends MyCounter
{
function showMyId()
{
return $this->id ."n";
}
}
$one = new myObj();
$two = new myObj();
echo $one->showMyId();
echo $two->showMyId();
It returns a value of 1 for $one and a value of 2 for $two.
Pretty much all it does is inherit and increment the myCounter Class each time the myObj class is instantiated, but still its pretty cool. I haven’t even done anything constructive with OOP and I’m already excited about it.
Now onto Polymorphism.
