PHP send SMS, in the firewall need to open that port

PHP Send SMS, the firewall needs to open that port
PHP send SMS, in the firewall need to open that port;

Is the server Linux?

------Solution--------------------
PHP Send SMS, how do you send, call is where the interface? We don't know how to judge you.

------Solution--------------------
I've never really studied sending e-mails, I know.
------Solution--------------------
You call the interface bar, let the one that provides the SMS interface, send the document to you. You are based on the document development, OK
------Solution--------------------
Must be an interface, so you ask your message service provider ...

