DateTime::__serialize DateTimeImmutable::__serialize DateTimeInterface::__serialize Serialize a DateTime &reftitle.description; public arrayDateTime::__serialize public arrayDateTimeImmutable::__serialize public arrayDateTimeInterface::__serialize The __serialize() handler. &reftitle.parameters; &no.function.parameters; &reftitle.returnvalues; The serialized representation of the DateTime object. &reftitle.examples; <function>DateTime::serialize</function> example &example.outputs; &reftitle.seealso; DateTime::__unserialize