Sending an SMS Message with a GSM Modem using PHP
Added an SMS via GSM modem PHP class to the resources page. Allows sending of an SMS message using PHP via a GSM modem plugged into the computers serial port. Code is Windows only, and has been tested on the EZ863 (Telit GE863) GSM modem.
Update: If this code does not work for you I would suggest looking into either Serproxy “a multi-threaded proxy program for redirecting network socket connections to/from serial links” or PHP serial extension “a loadable extension for PHP running on Windows implementing serial port handling and communications”.
December 4th, 2008 at 11:37 pm
Hi,
SMS via GSM modem using PHP class is one that I am desperately looking for but on Linux environment. Your script looks perfect, but I need it to be working on Linux. What fixes do I need to make on your script in order to work in Linux? Can you advice? I am not expert in PHP, so please take it easy on the explanation. =)
Thank you and looking forward to hear from you soon.
Regards,
Young Kim
December 4th, 2008 at 11:58 pm
Have not needed to use it in Linux myself but I would suggest you first check what your port is called (will likely be /dev/ttyS0), and then try changing the exec, and fopen lines to be as follows:
exec(“stty -F /dev/ttyS0 115200″, $output, $retval);
$this->fp = fopen(‘/dev/ttyS0′, ‘r+’);
December 5th, 2008 at 4:44 pm
Hi, thank you for the suggestion.
I will give a shot and will let you know.
I am going to work on your script and if it works, I will send it to you.
— Young
December 5th, 2008 at 11:08 pm
Hi, I have trouble implementing your code with linux.
For some reason, exec(“stty -F /dev/ttyS0 9600″, $output, $retval); does not return me anything.
When I put that command in lunux, it gives me the information of serial port and speed with 9600. But when I tried to execute that command from PHP, it doesn’t work.
I tested like this.
$test = exec(“stty -F /dev/ttyS0″);
echo .$test.
It does not return anything.
Is there anything that I have to do in order to execute the stty command from PHP?
Any advice would be appreciated.
— Young
December 5th, 2008 at 11:11 pm
To get the full output from the exec command you will want to use the second argument, see http://uk.php.net/manual/en/function.exec.php
If you enable the debug mode in the script it will do this for you.
December 8th, 2008 at 8:08 pm
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
December 8th, 2008 at 8:10 pm
How are you running the script, command line as the root user? If not I would suggest trying that.
December 8th, 2008 at 8:23 pm
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
December 8th, 2008 at 8:29 pm
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
December 8th, 2008 at 9:45 pm
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?
December 8th, 2008 at 10:08 pm
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
December 8th, 2008 at 10:25 pm
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…
December 12th, 2008 at 9:14 pm
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
December 13th, 2008 at 11:10 pm
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);
}