lib/danog/PHP/Struct.php
public static function pack($format, ...$data)
    {
        self::constructor();

        return self::$struct->pack($format, ...$data);
    }
public static function pack($format, ...$data)
    {
        self::constructor();

        return self::$struct->pack($format, ...$data);
    }
pack.

Packs data into bytes

@param	$format	    Format string
@param	...$data	Parameters to encode

@return Encoded data