Untitled

Sending SMS AT commands to 3G modem using PHP
<?
exec("mode COM5 BAUD=9600 PARITY=N data=8 stop=1 xon=off");
$fp = fopen ("\.COM5:", "r+");
//$fp = dio_open('COM5:', O_RDWR | O_NOCTTY | O_NONBLOCK);
if (!$fp)
{
    echo "Uh-oh. Port not opened.";
}
else
{

    $string  = "AT+CMGF=1";

    $string  = $string."OK";

    $string  = $string."AT+CMGS='+27824139864'";

    $string  = $string."> Hello World?<Ctrl>+<Z>";

    $string  = $string."+CMGS: 44";

    $string  = $string."OK";

    fputs ($fp, $string );
    echo $string."n";
    fclose ($fp);
}

?>

1 second delay
+++
1 second delay
The modem should respond with "OK"
Type AT+CMGF=1
press enter key
Modem will repond with "OK"