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<?php class Document { // Standard type public string $companyTitleStandard; // Union types public DocumentFieldCompanyTitle|string $companyTitleUnion; } $rp = new ReflectionProperty(Document::class, 'companyTitleUnion'); $unionTypes = array_map(function($type) { return $type->getName(); }, $rp->getType()->getTypes()); var_dump($unionTypes);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> string(25) "DocumentFieldCompanyTitle" [1]=> string(6) "string" }

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