Online PHP editor | refs for 40nda

<?php trait SerializationHelper { /** * @deprecated Use serializeToArray * * @return string */ public function serialize() { return serialize($this->serializeToArray()); } /** * @deprecated Use unserializeFromArray * * @param string $str * * @return void */ public function unserialize($str) { $this->unserializeFromArray(unserialize($str)); } public function __serialize(): array { return [$this->serialize()]; } public function __unserialize(array $data): void { $this->unserialize($data[0]); } } class ClassMetadata implements \Serializable { use SerializationHelper; /** * @var array */ private $indexMetadatas = []; public function addIndexMetadata($contextName, IndexMetadata $indexMetadata) { $indexMetadata->setClassMetadata($this); $this->indexMetadatas[$contextName] = $indexMetadata; } public function serializeToArray(): array { return [$this->indexMetadatas,]; } public function unserializeFromArray(array $data): void { list($indexMetadata) = $data; $this->indexMetadatas = $indexMetadata; } } class IndexMetadata { /** * @var ClassMetadata */ private $classMetadata; public function getClassMetadata() { return $this->classMetadata; } public function setClassMetadata(ClassMetadata $classMetadata) { $this->classMetadata = $classMetadata; } } $classMetadata = new ClassMetadata(); $indexMetadata = new IndexMetadata(); $classMetadata->addIndexMetadata('test', $indexMetadata); var_dump(serialize($classMetadata));