PHP implementation Telnet Function Example _php instance

Copy Code code as follows:

<?php
Class Phptelnet {
var $show _connect_error=1;

var $use _usleep=0; Change to 1 for faster execution
Don ' t change to 1 on Windows servers unless for 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 (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 ' <br/>[php Telnet] <a href= "http://www.jb51.net/php-telnet/errors/fsockopen.php" >connect failed:unable to open network connection</a><br/> '; Break
Case 2:echo ' <br/>[php Telnet] <a href= "http://www.jb51.net/php-telnet/errors/unknown-host.php" >connect Failed:unknown host</a><br/> '; Break
Case 3:echo ' <br/>[php Telnet] <a href= "http://www.jb51.net/php-telnet/errors/login.php" >connect failed: Login failed</a><br/> '; Break
Case 4:echo ' <br/>[php Telnet] <a href= "http://www.jb51.net/php-telnet/errors/php-version.php" >connect Failed:your Server\ ' s PHP version is too to PHP telnet</a><br/> '; Break
}
}
}

?>