php sms sending script

1<?php
2  
3 $to = "5555555555@vtext.com";
4 $from = "xxxxxxxxxxxxxx@gmail.com";  
5 $message = "This is a text message";
6 $headers = "From: $from\n";
7 mail (sto,  '', $message, $headers);
8
9?>
10   
11#get a domain and succees
12