PHP Implementation Telnet feature example _php instance

Copy CodeThe code is as follows:
Class Phptelnet {
var $show _connect_error=1;

var $use _usleep=0; Change to 1 for faster execution
Don ' t change the 1 on the Windows servers unless you have PHP 5
var $sleeptime = 125000;
var $loginsleeptime = 1000000;

var $fp =null;
var $loginprompt;

var $conn 1;
var $conn 2;

/*
0 = Success
1 = couldn ' t Open network connection
2 = Unknown Host
3 = Login Failed
4 = PHP version too low
*/
function Connect ($server, $user, $pass) {
$RV = 0;
$vers =explode ('. ', php_version);
$needvers =array (4,3,0);
$j =count ($vers);
$k =count ($needvers);
if ($k < $j) $j = $k;
for ($i =0; $i < $j; $i + +) {
if ($vers [$i]+0) > $needvers [$i]) break;
if ($vers [$i]+0) < $needvers [$i]) {
$this->connecterror (4);
return 4;
}
}

$this->disconnect ();

if (strlen ($server)) {
if (Preg_match ('/[^0-9. /', $server)) {
$ip =gethostbyname ($server);
if ($ip = = $server) {
$ip = ";
$RV = 2;
}
} else $ip = $server;
} else $ip = ' 127.0.0.1 ';

if (strlen ($IP)) {
if ($this->fp=fsockopen ($ip, 23)) {
Fputs ($this->fp, $this->conn1);
$this->sleep ();

Fputs ($this->fp, $this->conn2);
$this->sleep ();
$this->getresponse ($R);
$r =explode ("\ n", $r);
$this->loginprompt= $r [Count ($r)-1];

Fputs ($this->fp, "$user \ n");
$this->sleep ();

Fputs ($this->fp, "$pass \ n");
if ($this->use_usleep) usleep ($this->loginsleeptime);
else sleep (1);
$this->getresponse ($R);
$r =explode ("\ n", $r);
if ($r [count ($r) -1]== ') | | ($this->loginprompt== $r [Count ($r)-1])) {
$RV = 3;
$this->disconnect ();
}
} else $RV = 1;
}

if ($RV) $this->connecterror ($RV);
return $RV;
}

function Disconnect ($exit =1) {
if ($this->fp) {
if ($exit) $this->docommand (' exit ', $junk);
Fclose ($this-&GT;FP);
$this->fp=null;
}
}

function DoCommand ($c,& $r) {
if ($this->fp) {
Fputs ($this->fp, "$c \ n");
$this->sleep ();
$this->getresponse ($R);
$r =preg_replace ("/^.*?\n (. *) \n[^\n]*$/", "$", $r);
}
return $this->fp?1:0;
}

Function GetResponse (& $r) {
$r = ";
do {
$r. =fread ($this-&GT;FP, 1024);
$s =socket_get_status ($this->fp);
} while ($s [' unread_bytes ']);
}

function Sleep () {
if ($this->use_usleep) usleep ($this->sleeptime);
else sleep (1);
}

function Phptelnet () {
$this-&GT;CONN1=CHR (0xFF). chr (0xFB). chr (0x1F). chr (0xFF). chr (0xFB).
Chr (0x20). chr (0xFF). chr (0xFB). chr (0x18). chr (0xFF). chr (0xFB).
Chr (0x27). chr (0xFF). chr (0xFD). chr (0x01). chr (0xFF). chr (0xFB).
Chr (0x03). chr (0xFF). chr (0xFD). chr (0x03). chr (0xFF). chr (0xFC).
Chr (0x23). chr (0xFF). chr (0xFC). chr (0x24). chr (0xFF). chr (0xFA).
Chr (0x1F). chr (0x00). chr (0x50). chr (0x00). chr (0x18). chr (0xFF).
Chr (0xF0). chr (0xFF). chr (0xFA). chr (0x20). chr (0x00). chr (0x33).
Chr (0x38) Chr (0x34) Chr (0x30). chr (0x30). chr (0x2C). chr (0x33).
Chr (0x38) Chr (0x34) Chr (0x30). chr (0x30). chr (0xFF). chr (0xF0).
Chr (0xFF). chr (0xFA). chr (0x27). chr (0x00). chr (0xFF). chr (0xF0).
Chr (0xFF). chr (0xFA). chr (0x18). chr (0x00). chr (0x58). chr (0x54).
Chr (0x45). chr (0x52). chr (0x4d). chr (0xFF). chr (0xF0);
$this-&GT;CONN2=CHR (0xFF). chr (0xFC). chr (0x01). chr (0xFF). chr (0xFC).
Chr (0x22). chr (0xFF). chr (0xFE). chr (0x05). chr (0xFF). chr (0xFC). chr (0x21);
}

function Connecterror ($num) {
if ($this->show_connect_error) switch ($num) {
Case 1:echo '
[PHP Telnet] Connect failed:unable to open network connection
'; Break
Case 2:echo '
[PHP Telnet] Connect Failed:unknown Host
'; Break
Case 3:echo '
[PHP Telnet] Connect Failed:login failed
'; Break
Case 4:echo '
[PHP Telnet] Connect failed:your server\ ' s PHP version is too low for PHP Telnet
'; Break
}
}
}

?>

