php实现telnet的方法：1、创建一个php示例文件；2、通过“class phptelnet {function connect($server,$user,$pass) {...}}”方式实现telnet功能即可。
本文操作环境：windows7系统、php7.1版、dell g3电脑
php怎么实现telnet?
php实现telnet功能示例
代码如下:
<?phpclass 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 you have php 5 var $sleeptime=125000; var $loginsleeptime=1000000; var $fp=null; var $loginprompt; var $conn1; var $conn2; /* 0 = success 1 = couldn't open network connection 2 = unknown host 3 = login failed 4 = php version too low */ function connect($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->fp); $this->fp=null; } } function docommand($c,&$r) { if ($this->fp) { fputs($this->fp,"$c\n"); $this->sleep(); $this->getresponse($r); $r=preg_replace("/^.*?\n(.*)\n[^\n]*$/","$1",$r); } return $this->fp?1:0; } function getresponse(&$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); } 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(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); $this->conn2=chr(0xff).chr(0xfc).chr(0x01).chr(0xff).chr(0xfc). chr(0x22).chr(0xff).chr(0xfe).chr(0x05).chr(0xff).chr(0xfc).chr(0x21); } function connecterror($num) { if ($this->show_connect_error) switch ($num) { case 1: echo '<br />[php telnet] <a href="https://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="https://www.jb51.net/php-telnet/errors/unknown-host.php">connect failed: unknown host</a><br />'; break; case 3: echo '<br />[php telnet] <a href="https://www.jb51.net/php-telnet/errors/login.php">connect failed: login failed</a><br />'; break; case 4: echo '<br />[php telnet] <a href="https://www.jb51.net/php-telnet/errors/php-version.php">connect failed: your server\'s php version is too low for php telnet</a><br />'; break; } }}?>
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以上就是php怎么实现telnet的详细内容。