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<?php class SerialDateTime extends DateTime implements JsonSerializable{ public function jsonSerialize(){ return ['timestamp' => $this->getTimestamp()]; } public static function createFromFormat(){ $a = call_user_func_array(array(__CLASS__ , 'parent::'.__FUNCTION__), func_get_args()); $b = new self(); return $b->setTimestamp($a->getTimestamp()); } } echo json_encode([SerialDateTime::createFromFormat('m/d/Y', '10/31/2011')]);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of SerialDateTime::createFromFormat() must be compatible with DateTime::createFromFormat(string $format, string $datetime, ?DateTimeZone $timezone = null): DateTime|false in /in/qdRSK on line 9
Process exited with code 255.

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