Heim > Artikel > Backend-Entwicklung > PHP实现登陆后台限制到只允许一台机器在线_PHP教程
#
# ob_start();
# session_start();
# class CC{
# private $REFURL="http://www.BkJia.com"; //登陆成功后转换页面
# private $LoginFLAG=false; //登陆成功标志
# private $loginFILE="loginmsg.txt"; //信息文件
# function setFlag($flag){
# $this->loginFLAG=$flag;
# }
# function check(){
# global $_POST;
# if(file_exists($this->loginFILE)&& (time()-filemtime($this->loginFILE))
# $info=file($this->loginFILE);
# $username=trim($info[0]); //已在线的登陆用户名
# $password=trim($info[1]); //已在线密码(可以不保存)
# $ip =trim($info[2]); //已在线IP
# $sid =trim($info[3]); //已在线PORT
# if(strcmp($_SESSION[LoginUser],$username)==0){
# if(strcmp($_SESSION[LoginPw],$password)==0){
# if(strcmp($_SERVER[REMOTE_ADDR],$ip)==0){
# if(strcmp(session_id(),$sid)==0){
# $this->setFlag(true);
# echo "
";<br> # }<br> # }else{<br> # if(isset($_POST[LoginUser])){<br> # $_SESSION[LoginUser]=$_POST[LoginUser];<br> # $_SESSION[LoginPw]=$_POST[LoginPw];<br> # $fp=fopen($this->loginFILE,"w");<br> # $msg=$_POST[LoginUser]." ".$_POST[LoginPw]." ".$_SERVER[REMOTE_ADDR]." ".session_id();;<br> # fputs($fp,$msg);<br> # fclose($fp);<br> # }else{<br> # $outtime=time()-filemtime($this->loginFILE)-60;<br> # echo "登陆不存在或您已经超时(".$outtime."秒)...";<br> # }<br> # }<br> # }<br> # function Wfrom(){<br> # global $_POST;<br> # if(!file_exists($this->loginFILE) ||(time()-filemtime($this->loginFILE))>60){ //登陆失败<br> # echo #