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<?php class Base { private $foo; public function __construct() { $this->foo = "base foo"; } public final function getFoo() { var_dump($this); return $this->foo; } } class Derived extends Base { public $foo; public function __construct($type) { parent::__construct(); $this->foo = "derived foo"; $this->somethingUndefined = "dynamically declared"; } } $base = new Base(); var_dump($base->getFoo()); $derived = new Derived(0); var_dump($derived->getFoo()); $clonedDerived = clone $derived; var_dump($clonedDerived->getFoo());
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
object(Base)#1 (1) { ["foo":"Base":private]=> string(8) "base foo" } string(8) "base foo" Deprecated: Creation of dynamic property Derived::$somethingUndefined is deprecated in /in/Ob9m7 on line 24 object(Derived)#2 (3) { ["foo":"Base":private]=> string(8) "base foo" ["foo"]=> string(11) "derived foo" ["somethingUndefined"]=> string(20) "dynamically declared" } string(8) "base foo" object(Derived)#3 (3) { ["foo":"Base":private]=> string(8) "base foo" ["foo"]=> string(11) "derived foo" ["somethingUndefined"]=> string(20) "dynamically declared" } string(8) "base foo"
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 object(Base)#1 (1) { ["foo":"Base":private]=> string(8) "base foo" } string(8) "base foo" Deprecated: Creation of dynamic property Derived::$somethingUndefined is deprecated in /in/Ob9m7 on line 24 object(Derived)#2 (3) { ["foo":"Base":private]=> string(8) "base foo" ["foo"]=> string(11) "derived foo" ["somethingUndefined"]=> string(20) "dynamically declared" } string(8) "base foo" object(Derived)#3 (3) { ["foo":"Base":private]=> string(8) "base foo" ["foo"]=> string(11) "derived foo" ["somethingUndefined"]=> string(20) "dynamically declared" } string(8) "base foo"
Output for 8.1.0 - 8.1.28
object(Base)#1 (1) { ["foo":"Base":private]=> string(8) "base foo" } string(8) "base foo" object(Derived)#2 (3) { ["foo":"Base":private]=> string(8) "base foo" ["foo"]=> string(11) "derived foo" ["somethingUndefined"]=> string(20) "dynamically declared" } string(8) "base foo" object(Derived)#3 (3) { ["foo":"Base":private]=> string(8) "base foo" ["foo"]=> string(11) "derived foo" ["somethingUndefined"]=> string(20) "dynamically declared" } string(8) "base foo"
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30
object(Base)#1 (1) { ["foo":"Base":private]=> string(8) "base foo" } string(8) "base foo" object(Derived)#2 (3) { ["foo"]=> string(11) "derived foo" ["foo":"Base":private]=> string(8) "base foo" ["somethingUndefined"]=> string(20) "dynamically declared" } string(8) "base foo" object(Derived)#3 (3) { ["foo"]=> string(11) "derived foo" ["foo":"Base":private]=> string(8) "base foo" ["somethingUndefined"]=> string(20) "dynamically declared" } string(8) "base foo"
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.28
object(Base)#1 (1) { ["foo":"Base":private]=> string(8) "base foo" } string(8) "base foo" object(Derived)#2 (3) { ["foo"]=> string(11) "derived foo" ["foo":"Base":private]=> string(8) "base foo" ["somethingUndefined"]=> string(20) "dynamically declared" } string(8) "base foo" object(Derived)#3 (3) { ["foo"]=> string(11) "derived foo" ["foo":"Base":private]=> string(8) "base foo" ["somethingUndefined"]=> string(20) "dynamically declared" } Notice: Undefined property: Derived::$foo in /in/Ob9m7 on line 13 NULL
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