Sending SMS Using PHP

<?php
// Include the class
require 'class.swd_SMS.php';

// Create the object. (Parameters are optional if they're set in the class already)
$SMS = new swd_SMS('username', 'password');

// Send SMS. First parameter is the cell phone number with country code. (Without leading 00)
$SMS->send('34123456789', 'The message goes here');

// Let's send another just for fun
$SMS->send('34987654321', 'The message goes here');

// All sent messages are stored in an array.
echo '<pre>' . print_r($SMS->sent_messages, true) . '</pre>';


// Each sent message has a unique message ID, which is in the array above as well. With this we can see the message status any time. Like this:

$status = $SMS->fetch_msg_status('MT0052355965-1');

echo '<pre>' . print_r($status, true) . '</pre>';
?>




///////////////  here goes 'class.swd_SMS.php'



class swd_SMS
{

        /**
        *       =========================================================================
        *                                                        SMS Class
        *       =========================================================================
        *
        *       @author:            Balaji J H
        *       @requirements:      PHP 5
        *
        *       =========================================================================    
        *       This program is free software; you can redistribute it and/or modify it
        *       under the terms of the GNU General Public License as published by the
        *       Free Software Foundation; either version 2 of the License, or (at your
        *       option) any later version
        *      =========================================================================
        */


        /**
        *       Your TM4B username. If you don't have one yet, register here for free:
        *       https://www.tm4b.com/register/
        *
        *       @type        string
        */
        private $username         =  'username';

        /**
        *       Your TM4B login password.
        *
        *       @type        string
        */
        private $password         =  'password';

        /**
        *       The SMS sender. Use your company name or whatever you want display
        *       to the recipient
        *
        *       @type       string
        */
        private $from             =  'You';

        /**
        *       Message route. Both Global I and Global II messaging routes are
        *       identical with regards to reliability, delivery speed and support
        *       for delivery states. More info here: http://www.tm4bhelp.com/kb/a-8.php#8
        *
        *       @type        string
        */
        public $msg_route         =  'GD02';

        /**
        *       Minimum message length. Will set an error if the messages is shorter than
        *       this value.
        *
        *       @type        integer
        */       
        public $msg_min_length    =  2;

        /**
        *       Maximum message length. Will set an error if the messages is larger than
        *       this value. If the message is larger than 160 chars, it will be split into
        *       2 or more messages.
        *
        *       @type        integer
        */       
        public $msg_max_length    =  160;

        /**
        *       Minimum number length. Will set an error if the number is shorter than
        *       this value.
        *
        *       @type        integer
        */       
        public $min_num_length    =  8;

        /**
        *       An array of errors that occurred while any request.
        *
        *       @type        array
        */       
        public $errors            =  array();

        /**
        *       An array with the details of the sent messages.
        *
        *       @type        array
        */
        public $sent_messages     =  array();

        /**
        *       An array with all details of failed messages.
        *
        *       @type        array
        */
        public $failed_messages   =  array();


       
        /**
        *       Class constructor. Takes 0 or 2 parameters. Parameter 1 being the username,
        *       and parameter 2 being the password, for quick login.
        *
        *       @param       string        Login username
        *       @param       string        Login password
        *
        *       @return      none
        */
        public function __construct()
        {
                if (func_num_args() == 2)
                {
                        list($this->username, $this->password) = func_get_args();
                }
        }


        /**
        *       Sends the message out. The country code without the leading  00 must be
        *       specified in the number.
        *
        *       @param       string        Recipient phone number.
        *       @param       string        Message for recipient
        *       @param       string        "From" header.
        *       @param       string        Message route. Either GD01 or GD02
        *
        *       @return      boolean
        */
        public function send($number, $message, $from = false, $route = false)
        {
                $number = preg_replace('/\D/', null, $number);

                if (strlen($number) < $this->min_num_length)
                {
                        self::set_error("Invalid number: {$number}");
                        return false;
                }
               
                // Convert message into a single line string.
                $message = preg_replace('/[\r\n\t]+/', ' ', trim(strval($message)));
                $message = preg_replace('/\s{2,}/', ' ', $message);
                $messagelength = strlen($message);

                if ($messagelength < $this->msg_min_length)
                {
                        self::set_error('Message too short.');
                        return false;
                }
                else if ($messagelength > $this->msg_max_length)
                {
                        self::set_error('Message too long.');
                        return false;
                }

                if ($from)
                {
                        $this->from = $from;
                }
                if ($route AND in_array($route, array('GD01', 'GD02')))
                {
                        $this->msg_route = $route;
                }

                $request = array(
                        'version' => '2.0',
                        'type'    => 'broadcast',
                        'msg'     => $message,
                        'to'      => $number,
                        'from'    => $this->from,
                        'route'   => $this->msg_route
                );

                $response = self::http_request($request);
                $request['delivertime'] = time();

                if (self::is_error($response))
                {
                        array_push($this->failed_messages, $request);
                        return false;
                }
               
                $request['messageid'] = $response;
                array_push($this->sent_messages, $request);
                return true;
        }

       
        /**
        *       Receives the message status and returns an array with the status and deliver time.
        *
        *       @param       string        Message ID
        *
        *       @return      array         Deliver status/Deliver time
        */
        public function fetch_msg_status($messageid)
        {
                $request = array('type' => 'check_status');

                if (preg_match('/^MT[\d]{10}-\d$/', $messageid))
                {
                        $request['id'] = $messageid;
                }
                else if (preg_match('/^[a-f0-9]{21}$/', $messageid))
                {
                        $request['custom'] = $messageid;
                }
                else
                {
                        self::set_error('Invalid Message ID.');
                        return false;
                }

                $response = self::http_request($request);

                if (self::is_error($response))
                {
                        return false;
                }

                list($status, $delivertime) = explode('|', $response);
                list($year, $month, $day, $hour, $minute) = str_split($delivertime, 2);
       
                return array(
                        'delivered'   => ($status == 'DELIVRD'),
                        'delivertime' => mktime($hour, $minute, 0, $month, $day, $year) // Don't we all prefer working with UNIX timestamps?
                );
        }


        /**
        *       Gets the current balance of your account.
        *
        *       @return      mixed        Balance on success, false on failure.
        */
        public function fetch_balance()
        {
                $request = array(
                        'version' => '2.0',
                        'type'    => 'check_balance'
                );

                $response = self::http_request($request);

                return self::is_error($response) ? false : $response;
        }


        /**
        *       Checks if a specific destination is available on a message route
        *
        *       @param       string        Country code
        *       @param       string        Message route
        *
        *       @return      array         Availability, country, and credits needed to send SMS to this country
        */
        public function check_destination($dest, $route = 'GD01')
        {
                $request = array(
                        'type'  => 'check_destination',
                        'dest'  => $dest,
                        'route' => $route
                );

                $response = self::http_request($request);

                if (self::is_error($response))
                {
                        return false;
                }

                @list($status, $country, $credits) = explode('|', $response);

                return array(
                        'status'  => ($status == 'Yes'),
                        'country' => $country,
                        'credits' => $credits
                );
        }
       
       
        /**
        *       Sends the HTTP request to the server and receives the response.
        *       Either the cURL library needs to be installed, or allow_url_fopen
        *       needs to be enabled in php.ini
        *
        *       @param       array        request values
        *
        *       @return      string       Server response
        */
        private function http_request($request = array())
        {
                // Should never exceed the time limit, but just in case.
                @set_time_limit(0);

                $request['username'] = $this->username;
                $request['password'] = $this->password;

                // Takes also care of the URL encoding.
                $request = http_build_query($request, '', '&');

                if (function_exists('curl_init') AND $ch = @curl_init('https://www.tm4b.com/client/api/http.php'))
                {
                        curl_setopt($ch, CURLOPT_POST, true);
                        curl_setopt($ch, CURLOPT_POSTFIELDS, $request);
                        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
                        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
               
                        $response = curl_exec($ch);
                        curl_close($ch);
                }
                else if (ini_get('allow_url_fopen'))
                {
                        if (!$fp = @fsockopen('ssl://tm4b.com', 443))
                        {
                                self::set_error('Unable to connect to host. Try again later.');
                                return false;
                        }

                        $header  = "POST /client/api/http.php HTTP/1.1\r\n";
                        $header .= "Host: tm4b.com\r\n";
                        $header .= "User-Agent: HTTP/1.1\r\n";
                        $header .= "Content-Type: application/x-www-form-urlencoded\r\n";
                        $header .= "Content-Length: " . strlen($request) . "\r\n";
                        $header .= "Connection: close\r\n\r\n";
                        $header .= "{$request}\r\n";
                       
                        fputs($fp, $header);
                        $result = array();

                        while(!feof($fp))
                        {
                                $result[] = fgets($fp);
                        }

                        fclose($fp);
                        $response = $result[9];
                }
                else
                {
                        trigger_error('Server does not support HTTP(S) requests.', E_USER_ERROR);
                }

                return trim($response);
        }


        /**
        *       Checks for errors in the API response and adds it to the array if there's one.
        *
        *       @param       string       API response
        *
        *       @return      boolean      True if error, false if not.
        */
        private function is_error($string)
        {
                if (preg_match('/^error\(\d+\|([^\)]+)/', $string, $error))
                {
                        self::set_error($error[1]);
                        return true;
                }

                return false;
        }


        /**
        *       Sets the minumum and maximum message length
        *
        *       @param       integer        Minimum message length. Use false to keep default
        *       @param       integer        Maximum message length.
        *
        *       @return      none
        */
        public function set_message_length($min, $max = false)
        {
                if ($min !== false)
                {
                        $this->msg_min_length = intval($min);
                }
                if ($max !== false)
                {
                        $this->msg_max_length = intval($max);
                }
        }
       
       
        /**
        *       Returns the number of sent messages.
        *
        *       @return       integer        Number of sent messages.
        */
        public function nr_sentmessages()
        {
                return sizeof($this->sent_messages);
        }

       
        /**
        *       Adds an error string to the error array
        *
        *       @param       string       Error string
        *
        *       @return      none
        */
        private function set_error($error)
        {
                $this->errors[] = $error;
        }

        /**
        *       =========================================================================
        *                                                        SMS Class end
        *       =========================================================================
        *      
        */
       
}

?>