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<?php
echo Mammal::$count;
abstract class Animal {
const KIND=1;
static $animalSpecies = array();
public static $count = 0, $animal;
public abstract function isMammal();
function __construct() {
self::$count++;
self::$animal = $this;
self::getCount("calling animal's getCount 0");
echo self::KIND;
}
public function getCount($animalLogging) {
echo $animalLogging;
return Animal::$count;
}
public static function getAnimal() {
$species = self::$animalSpecies;
$first = self::$animalSpecies[0];
return self::$animal;
}
public static function kindInfo() {return "animal is ...";}
}
class Mammal extends Animal {
//const KIND=2;
public function isMammal() {
return false;
}
function __construct() {//Mammal
parent::__construct();
Mammal::$count++;
echo parent::$count;
echo self::$count;
echo parent::getCount("calling animal's getCount 1");
$mammalKind = Mammal::KIND;
$animalKind = Animal::KIND;
$isMe = (self::KIND == $mammalKind);
$isParentAnimal = (parent::KIND == $animalKind);
}
}
class Cat extends Mammal {
const KIND=3;
public static $count = 0, $cat;
function __construct() {
parent::__construct();
Cat::$count++;
echo parent::getCount("calling animal's getCount 2");
echo $this->getCount("calling cat's getCount");
$catKind = self::KIND;
echo Animal::KIND;
echo Mammal::KIND;
echo Cat::KIND;
echo Animal::kindInfo();
echo Mammal::kindInfo();
echo Cat::kindInfo();
echo self::kindInfo();
echo parent::kindInfo();
}
public function getCount($catLogging) {
echo $catLogging;
return Cat::$count;
}
public static function kindInfo() {return "cat is ...";}
}
Animal::$count--;
Mammal::$count--;
Cat::$count--;
print Animal::KIND;
print Mammal::KIND;
print Cat::KIND;
print Animal::kindInfo();
print Mammal::kindInfo();
print Cat::kindInfo();
$mammal = new Mammal;
$mammal->getCount("calling animal's getCount 3");
$cat = new Cat;
$cat->getCount("calling cat's getCount 1");
?>
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