firstName = $first;
$this->lastName = $last;
$this->age = $age;
Person::$total++;
}
function __destruct()
{
echo "Releasing " . $this->format() . "
\n";
Person::$total--;
}
function format()
{
return "{$this->firstName} {$this->lastName}, Age: {$this->age}";
}
function setAge($age)
{
$this->age = $age;
}
static function total()
{
return Person::$total;
}
}
class Student extends Person
{
private $advisor;
function __construct($first, $last, $age, $advisor)
{
parent::__construct($first, $last, $age);
$this->advisor = $advisor;
}
function format()
{
return parent::format() . ", Advisor: {$this->advisor}";
}
}
?>
OOP Demo
format() . "
\n";
echo "Current Population Size = " . Person::total() . "
\n";
$loewe = new Person("Sebastian", "Loewe", 27);
echo $loewe->format() . "
\n";
echo "Current Population Size = " . Person::total() . "
\n";
unset($loewe);
echo "Current Population Size = " . Person::total() . "
\n";
$reddy = new Student("Sandeep", "Reddy", 19, "Paxton");
echo $reddy->format() . "
\n";
echo "Current Population Size = " . Person::total() . "
\n";
$student = clone $reddy;
$student->setAge(20);
echo $student->format() . "
\n";
echo "Current Population Size = " . Person::total() . "
\n";
try
{
throw new Exception("Mystery", 2006);
}
catch (Exception $e)
{
echo "Error Message: " . $e->getMessage() . "
\n";
echo "Error Number: " . $e->getCode() . "
\n";
echo "Error Line: " . $e->getLine() . "
\n";
echo "Error File: " . $e->getFile() . "
\n";
}
?>