Understanding Object Oriented Programming in PHP
November 2nd, 2007 | Posted in Programming |
Trying to understand Object oriented PHP programming. Found this good explanation with examples at http://us.php.net/oop. Here is the code sample:
<?phpclass A
{
function foo()
{
if (isset($this)) {
echo '$this is defined (';
echo get_class($this);
echo ")\n";
} else {
echo "\$this is not defined.\n";
}
}
}
class B
{
function bar()
{
A::foo();
}
}
$a = new A();
$a->foo();
A::foo();
$b = new B();
$b->bar();
B::bar();
?>
THE RESULT:
$this is defined (a)
$this is not defined.
$this is defined (b)
$this is not defined.
