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<?php class Bar { private $baz = 'tab'; } class Foo extends Bar { private $baz = 'baz'; public function __construct() { $this->accessor = function () { return $this->baz; }; $this->writer = function ($bar) { $this->baz = $bar; }; } } $foo = new Foo(); $bar = new Bar(); $accessor = $foo->accessor; var_dump($accessor()); $accessor = Closure::bind($foo->accessor, $bar, 'Bar'); var_dump($accessor()); $writer = Closure::bind($foo->writer, $bar, 'Bar'); $writer('taz'); var_dump($bar);
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Creation of dynamic property Foo::$accessor is deprecated in /in/DIZjZ on line 14 Deprecated: Creation of dynamic property Foo::$writer is deprecated in /in/DIZjZ on line 15 string(3) "baz" string(3) "tab" object(Bar)#4 (1) { ["baz":"Bar":private]=> string(3) "taz" }

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