一个关于PHP的问题
PHP code<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->$P_S_T = $t_array[0] + $t_array[1];$timestamp = time();session_start();$ll_nowtime = $timestamp ;if (session_is_registered(‘ll_lasttime’)){ $ll_lasttime = $_SESSION['ll_lasttime']; $ll_times = $_SESSION['ll_times'] + 1; $_SESSION['ll_times'] = $ll_times;}else{ $ll_lasttime = $ll_nowtime; $ll_times = 1; $_SESSION['ll_times'] = $ll_times; $_SESSION['ll_lasttime'] = $ll_lasttime;}if (($ll_nowtime – $ll_lasttime)=5){ header(sprintf(“Location: %s”,’http://127.0.0.1′)); exit; }}else{ $ll_times = 0; $_SESSION['ll_lasttime'] = $ll_nowtime; $_SESSION['ll_times'] = $ll_times;}
Copy after login
主要功能:在3秒内连续刷新页面5次以上将指向本机 http://127.0.0.1
网上广为流传的一份代码,但是显然这个代码是错的,因为//已经起到的注释作用,那么怎么改这个代码才能正常使用呢?
不怎么熟悉PHP,所以请高手更正一下,谢谢,分不多了,只能给30分了。
------解决方案--------------------引号错误吧,1楼的代码的引号是中文的单引号,不是英文的单引号。。。
------解决方案--------------------正确代码:
date_default_timezone_set('PRC');
$timestamp = time();
session_start();
$ll_nowtime = $timestamp ;
if (isset($ll_nowtime)){
$ll_lasttime = $_SESSION['ll_lasttime'];
$ll_times = $_SESSION['ll_times'] + 1;
$_SESSION['ll_times'] = $ll_times;
}else{
$ll_lasttime = $ll_nowtime;
$ll_times = 1;
$_SESSION['ll_times'] = $ll_times;
$_SESSION['ll_lasttime'] = $ll_lasttime;
}
if (($ll_nowtime-$ll_lasttime) if ($ll_times>=5){
header(sprintf("Location: %s",'http://127.0.0.1'));
exit();
}
}else{
$ll_times = 0;
$_SESSION['ll_lasttime'] = $ll_nowtime;
$_SESSION['ll_times'] = $ll_times;
}
?>
------解决方案--------------------google一下,这是一个防止cc程序
楼主提供的程序在本地运行报错,稍微修改了一下,经测试可以运行
session_start(); //开启session
$timestamp = time();
$ll_nowtime = $timestamp ;
//判断session是否存在 如果存在从session取值,如果不存在进行初始化赋值
if ($_SESSION){
$ll_lasttime = $_SESSION['ll_lasttime'];
$ll_times = $_SESSION['ll_times'] + 1;
$_SESSION['ll_times'] = $ll_times;
}else{
$ll_lasttime = $ll_nowtime;
$ll_times = 1;
$_SESSION['ll_times'] = $ll_times;
$_SESSION['ll_lasttime'] = $ll_lasttime;
}
//现在时间-开始登录时间 来进行判断 如果登录频繁 跳转 否则对session进行赋值
if(($ll_nowtime - $ll_lasttime) if ($ll_times>=5){
header("location:Http://www.baidu.com");
exit;
}
}else{
$ll_times = 0;
$_SESSION['ll_lasttime'] = $ll_nowtime;
$_SESSION['ll_times'] = $ll_times;
}
?>