In this post I will describe how to make a simple Email to SMS Gateway, using Portech MV37x and PHP code running on a Linux server.

Operation is simple: the code will poll the configured imap a folder, and if detect a new email it will send a Short Message Service (SMS) using the Portech hardware device. The recipient’s mobile number must be specified in the email subject (the subject must be a number or the email will be ignored) and the text will be the body in the email itself (truncated to 140 chars).

Att.: In this script we are using an IMAP email account and the PHPmailer library.

<!--?php </p>
<p>require_once('/var/spool/mail2sms/PHPMailer-master/class.phpmailer.php');</p>
<p>$hostnamemail = '{URL IMAP ACCOUNT:143}INBOX';<br ?--> $usernamemail = 'IMAP USERNAME';
$passwordmail = 'IMAP PASSWORD';

$hostportech = 'PORTECH IP';
$usernameportech = 'PORTECH USERNAME';
$passwordportech = 'PORTECH PASSWORD';

function sendSMS($_number,$_message){
global $hostportech;
global $usernameportech;
global $passwordportech;
$debug = false;

$fp = fsockopen($hostportech, 23, $errno, $errstr, 30);
if (!$fp)
{
echo "$errstr ($errno)
\n";
die;
}

sleep(2);
$cmd = $usernameportech."\r";
fputs($fp, $cmd, strlen($cmd));

if ($debug)
echo fread($fp, 128);

sleep(1);
$cmd = $passwordportech."\r";
fputs($fp, $cmd, strlen($cmd));

if ($debug)
echo fread($fp, 128);

sleep(1);
$cmd = "module\r";
fputs($fp, $cmd, strlen($cmd));

if ($debug)
echo fread($fp, 128);

sleep(2);
$cmd = "ate1\r";
fputs($fp, $cmd, strlen($cmd));

if ($debug)
echo fread($fp, 128);

sleep(1);

$cmd = "at+cmgf=1\r";
fputs($fp, $cmd, strlen($cmd));

sleep(2);

$cmd = "at+cmgs="$_number"\r";
fputs($fp, $cmd, strlen($cmd));

sleep(2);

$cmd = "$_message\r\x1a"; //Ctrl-Z
fputs($fp, $cmd, strlen($cmd));

sleep(2);

fclose($fp);

}

set_time_limit(3000);
$numerorand= rand(5, 15);

$inbox = imap_open($hostnamemail,$usernamemail,$passwordmail);

$mailconsoggettonumerico=false;

$emails = imap_search($inbox,'UNSEEN');
if($emails) {

$overview = imap_fetch_overview($inbox,$emails[0],0);
$message = imap_fetchbody($inbox,$emails[0],1);
$soggetto=$overview[0]->subject;

if(is_numeric($overview[0]->subject))
{
$mailconsoggettonumerico=true;
}

if(!$mailconsoggettonumerico) {
imap_close($inbox,CL_EXPUNGE);
exit;
}

if (strlen($message)>140) {
$message=substr($message, 0,140);
}
sendSMS($soggetto,$message);
}

imap_close($inbox,CL_EXPUNGE);
?>

Using cron is possible to automate the entire process: the code will poll the imap account and if a new email arrives it will be analyzed and will be trasmitted via SMS the new message !

Linkografia
PhpMailer
Downloading Gmail attachments in PHP

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