Thanks for the feedback. As it turns out, the reason I was getting zero
data bytes in my UDP packet was that I had declared the packet variable
outside the function in which I was using it.
$packet = chr(0x01).chr(0x1d).... etc
function doSomething($x)
{
// using $packet in here gives you an empty variable.
}
So I guess it was a very basic PHP language thing I was running into. Guess
I've done too much Perl and assumed the variables were accessible in the
function. :-)
"Keith Greene" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> I use the following without problem:
>
> $fp = fsockopen("udp://www.server.com", 24250, &$errno, &$errstr,
.2);
> if (!$fp) {
> $status = "Server not available";
> } else {
> $trigger =
> chr(hexdec('FF')).chr(hexdec('FF')).chr(hexdec('01')).chr(hexdec('00'));
> fwrite($fp,$trigger); # Send trigger to the
> status server
> $junk = fread($fp, 4); # discard echoed command
> from status server
> }
>
> Keith
>
> At 04:23 PM 7/7/2004, coder_1024 wrote:
> >I'm trying to send some binary data to a UDP server using PHP. The
examples
> >I've been able to find show sending binary data over TCP, or they show
> >sending text over UDP.
> >
> >I'm constructing the messages using the below:
> >
> > $text_msg = "Hello, World\r\n";
> > $binary_msg = chr(0x01).chr(0x02).chr(0x00).chr(0xAD);
> > $binary_msg_size = 4;
> >
> >I've tried a couple methods of sending the data:
> >
> > $fp = fsockopen("udp://" . $host,$port,....);
> > fwrite($fp,$binary_msg,$binary_msg_size);
> >
> >and
> >
> > $sock = socket_create(AF_INET,SOCK_DGRAM,SOL_UDP);
> > socket_sendto($sock,$binary_msg,$binary_msg_size,0,$host,$port);
> >
> >In either case, a UDP packet is sent, but with a zero data size. If I
> >instead send the $text_msg, it works as expected. For some reason
sending
> >the binary data doesn't work.
> >
> >Does anyone have insight into how to send binary data over UDP using PHP?
> >
> >--
> >PHP General Mailing List (http://www.php.net/)
> >To unsubscribe, visit: http://www.php.net/unsub.php
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
