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<?php class Foo { private ?int $foo; private ?int $bar = 1; private ?int $baz = null; public function propertyInitialized($name): bool { if (property_exists($this, $name)) { try { return $this->$name === null || $this->$name !== null; } Catch(Error $e) { return false; } } else { return false; } } } $foo = new foo; var_dump($foo->propertyInitialized('foo'), $foo->propertyInitialized('bar'), $foo->propertyInitialized('baz'), $foo->propertyInitialized('doesNotExist'));
Output for git.master, git.master_jit, rfc.property-hooks
bool(false) bool(true) bool(true) bool(false)

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