[Repost] how can i send an object over udp ?

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PHP

UDP

TCP/IP

sockets

hi,
i have two packet Classes ,
1- CommandPacket:

class CommandPacket {
        /** @var CommandPacketHeader */
        private $header;
        private $data;
}

and 2- CommandPacketHeader :

class CommandPacketHeader {
        /** @var integer Cardinal */
        private $headerSize;
        /** @var array Description */
        private $signature;
        /** @var integer Cardinal */
        private $version;
        /** @var integer UInt64 */
        private $highSessionID;
        /** @var integer Description */
        private $lowSessionID;
        /** @var integer enum */
        private $commandID;
        /** @var integer Cardinal */
        private $dataSize;
}

I want to know how can i split an object into chunks and send them with socket_sendto function?

socket_sendto( resource $socket , string $buf , int $len , int $flags , string $addr [, int $port = 0 ] )