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<?php abstract class FooBase { private $money; function __construct($money) { $this->money = $money; } function getMoney() { return $this->money; } } class Foo extends FooBase { private $money; function getMoney() { return '$' . parent::getMoney(); } function setMoney($money) { $this->money = $money; } } class Bar extends Foo { private $money; function getMoney() { return '$' . $this->money; } function setMoney($money) { $this->money = $money; } } $foo = new Foo(12345); var_dump($foo->getMoney()); $foo->setMoney(67890); var_dump($foo->getMoney()); $bar = new Bar(12345); var_dump($bar->getMoney()); $bar->setMoney(67890); var_dump($bar->getMoney());
Output for 5.3.7 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
string(6) "$12345" string(6) "$12345" string(1) "$" string(6) "$67890"

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