Comments on: Sending an SMS Message with a GSM Modem using PHP

By: Aaron

Aaron — Sun, 29 Aug 2010 20:20:53 +0000

Great script, works on Windows.

I have tested it with a Wavecom M1306B.

Thanks for sharing the script, I managed to find a lot for Linux PHP modems on the Internet, but this is the only one so far for Windows PHP that works.

By: admin

admin — Sat, 13 Dec 2008 22:10:58 +0000

Could perhaps try the below, apart from that I am not sure – however please post if you find a solution.

while (!feof($this->fp)) {
$this->buffer .= fread($this->fp, 1024);
}

By: Young Kim

Young Kim — Fri, 12 Dec 2008 20:14:26 +0000

Hi,

I’ve been working on this and so far I’ve figured out to work to the point where it will open the port.
However, once it gets to wait_reply() function, it gets stuck. Meaning that it web browser just keeps on loading without ping out. The problem occurs in $this->buffer .= fread($this->fp, 1024); here… It seems like PHP can not read the port.

Do you have any idea that may be helpful to this?

— Young

By: Young Kim

Young Kim — Mon, 08 Dec 2008 21:25:11 +0000

I see that I am “nobody” trying to access from PHP side and /dev/ttyS0 is owned by “root” with group named “uucp”

I strongly think that this is the only issue that can cause all this mass… That’s what I’ve found so far…

By: Young Kim

Young Kim — Mon, 08 Dec 2008 21:08:34 +0000

Yes…
Everything works as expected in linux terminal.
When it becomes PHP that try to run the command line, it gives me the problem.

I did some research regarding this and there is a thing called suPHP. I am seeking to install this into my linux machine. What are you thoughts on this?

— Young

By: admin

admin — Mon, 08 Dec 2008 20:45:18 +0000

I would suggest first trying to confirm where the issue is, did you try running it as root on the command line, did it work?

By: Young Kim

Young Kim — Mon, 08 Dec 2008 19:29:00 +0000

I just tried

exec(“sudo stty -F /dev/ttyS0 9600″, $output, $retval);

Same error..

Am I missing something or doing something wrong here??

I really appreciate for your time

– Young

By: Young Kim

Young Kim — Mon, 08 Dec 2008 19:23:38 +0000

I kinda know that su/sudo makes it root.
How do I utilize this from PHP script.
I know.. I am being little lack of knowledge here..

— Young

By: admin

admin — Mon, 08 Dec 2008 19:10:51 +0000

How are you running the script, command line as the root user? If not I would suggest trying that.

By: Young Kim

Young Kim — Mon, 08 Dec 2008 19:08:18 +0000

I am keep on getting permission failed error.

Warning: fopen(/dev/ttyS0) [function.fopen]: failed to open stream: Permission denied in /opt/lampp/htdocs/testSMSLinuxVer.php on line 39

When I try to list /dev from PHP, it give out zero.
What am I missing here?

Any idea? Sorry to keep bothering you.

— Young