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<?php #[\Attribute] class AttribWithName { public readonly string $name; public function __construct(?string $name = null) { if ($name) { $this->name = $name; } } public function fromReflection(\ReflectionClass $subject): void { $this->name ??= $subject->getShortName(); } } #[AttribWithName()] class C {} $attr = (new ReflectionClass(C::class))->getAttributes()[0]->newInstance(); print "Ok up to here.\n"; // And now the fatal. print $attr->name;
Output for git.master, git.master_jit
Ok up to here. Fatal error: Uncaught Error: Typed property AttribWithName::$name must not be accessed before initialization in /in/CUgYv:27 Stack trace: #0 {main} thrown in /in/CUgYv on line 27
Process exited with code 255.

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