I've looked in to this a bit but still don't really understand if its possible.
I have a small webserver that sits on my private network. I want to create a php script that will connect to a telnet server on the private network and send it text every 30 seconds.
Obviously the easy part is the text and timing but connection to a TCP Port 23 and sending a string of text seems harder for some reason. What's the best way to do this?
Use PHP sockets :
<?php
while(true){
sleep 30;
$fp = fsockopen("www.example.com", 23, $errno, $errstr, 30);
if (!$fp) {
echo "$errstr ($errno)<br />\n";
} else {
fwrite($fp, "The string you want to send");
while (fgets($fp, 128)) {
echo fgets($fp, 128); // If you expect an answer
}
fclose($fp); // To close the connection
}
}
?>
fgets() after the end of file. Read the linked question. You should use while (fgets($fp, 128))
while (fgets($fp, 128)) edit is wrong. The while will read data then the echo will read more data, not the same data again. You should be reading into a buffer and echoing that, borrowing from the linked question... while (($buffer = fgets($fp, 128)) !== false) { echo $buffer; }