php telnet功能實例代碼

例子，php telnet功能實作程式碼。

class PHPTelnet {
 var $show_connect_error=1;
<p> var $use_usleep=0; // 更改為1 以加快執行速度
 // 在Windows 伺服器上不要更改為1，除非您有PHP 5
 var $sleeptime=125000;
 var $loginsleeptime= 1000000;
 var $fp=NULL;
 var $loginprompt;
 var $conn1;
 var $conn2;
 /*
 0 = 成功
 1 = 無法開啟網路連線
 2 = 未知主機
 3 = 登入失敗
 4 = PHP 版本過低
 * /
函數Connect($server,$user,$pass) {
 $rv=0;
 $vers=explode('.',PHP_VERSION);
 $needvers=array(4, 3,0) ;
 $j=count($vers);
 $k=count($needvers);
 if ($k for ($i= 0;$i if (($vers[$i]+0)>$needvers[$i]) break;
 if (($vers[ $i]) +0) $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,"$usern" );
 $this->Sleep();
 fputs($this->fp,"$passn");
 if ($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->fp);
 $this->fp=NULL;
 }
 } p>
 function DoCommand($c,&$r) {
 if ($this->fp) {
 fputs($this->fp,"$cn");
 $this->; Sleep();
 $this->GetResponse($r);
 $r=preg_replace("/^.*?n(.*)n[^n]*$/ ","$1" ,$r);
 }
 回傳$this->fp?1:0;
 }
 function GetResponse(&$r) {
 $r='';
 do {
 $r.=fread($this->fp, 1024);
 $s=socket_get_status($ this->fp);
 } while ($s['unread_bytes']);
 }
 function Sleep() {
 if ($this->use_usleep) usleep($this->sleeptime) ;
 else sleep(1);
 }
 //telnet功能主函數
 function PHPTelnet() {
 $this->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(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(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);
 $this->conn2=chr(0xFF).chr(0xFC).chr(0x01).chr(0xFF).chr(0xFC).
 字元(0x22)。 chr(0xFF).chr(0xFE).chr(0x05).chr(0xFF).chr(0xFC).chr(0x21);
 }
 function ConnectError($num) {
 if ($this->show_connect_error) switch ($num) {
 case 1: echo '>[PHP Telnet] 連線失敗：無法開啟網路連線'; Break;
情況2: echo '[PHP Telnet] 連線失敗：未知主機'; Break;
情況3: echo '[PHP Telnet] ;連線失敗：登入失敗'; Break;
情況4: echo '[PHP Telnet] 連線失敗：您的伺服器的PHP 版本太低，無法支援PHP Telnet'; 中斷;
 }
 }
}
?>