how can i pack an object in php?

Question

how can i pack an object in php and send it over udp? i have a packet class that has 6 propertis :

/** @var 32int  */
    private $headerSize;
    /** @var 32int  */
    private $highSessionID;
    /** @var 32int  */
    private $lowSessionID;
    /** @var array (char)  */
    private $signature;
     /** @var 32int  */
    private $comandID;
     /** @var 32int  */
    private $dataSize;

i tried a simple client-server app that it send a string over udp but i want to send an object that have different type of data

Edited : I used pack and serialized function , they were very helpful but i have one more question :

I read manual in php.net but i did not understand how to pack different type of data . i tried this :

$n = ord('a');
 $buf =  pack('IS',200000000,$n);

 $array = unpack('I/S', $buf);
 foreach ($array as $key => $value)
    echo "\$array[$key] = ". $value ."<br>\n"; 

output :

$array[1] = 97<br> 

why 200000000 was not print ? how can i fix the code?

thx.

Answer 1

I found my mistake:

The unpacked data is stored in an associative array. To accomplish this you have to name the different format codes and separate them by a slash /. If a repeater argument is present, then each of the array keys will have a sequence number behind the given name.