<?php
$key = "This is supposed to be a secret key !!!"; function keyED($txt,$encrypt_key)
{
$encrypt_key = md5($encrypt_key);
$ctr=0;
$tmp = "";
for ($i=0;$i<strlen($txt);$i++)
{
if ($ctr==strlen($encrypt_key)) $ctr=0;
$tmp.= substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1);
$ctr++;
}
return $tmp;
} function encrypt($txt,$key)
{
srand((double)microtime()*1000000);
$encrypt_key = md5(rand(0,32000));
$ctr=0;
$tmp = "";
for ($i=0;$i<strlen($txt);$i++)
{
if ($ctr==strlen($encrypt_key)) $ctr=0;
$tmp.= substr($encrypt_key,$ctr,1) .
(substr($txt,$i,1) ^ substr($encrypt_key,$ctr,1));
$ctr++;
}
return keyED($tmp,$key);
} function decrypt($txt,$key)
{
$txt = keyED($txt,$key);
$tmp = "";
for ($i=0;$i<strlen($txt);$i++)
{
$md5 = substr($txt,$i,1);
$i++;
$tmp.= (substr($txt,$i,1) ^ $md5);
}
return $tmp;
} $string = "Hello World !!!"; // encrypt $string, and store it in $enc_text
$enc_text = encrypt($string,$key); // decrypt the encrypted text $enc_text, and store it in $dec_text
$dec_text = decrypt($enc_text,$key); print "Original text : $string <Br>\n";
print "Encrypted text : $enc_text <Br>\n";
print "Decrypted text : $dec_text <Br>\n";
?>
自己看看吧,也许对你有帮助。
http://www.ccidnet.com/tech/app/2001/08/07/58_2902.html
session_start();
session_set_cookie_params(time()+8600,'/cooliepath','johnny.com');
$cookie=session_get_cookie_params();
echo $cookie[lipath];
echo $cookie[lifetime];
echo $cookie[domain];
$aa="dd";
$bb="bb";
session_register("aa");
session_register("bb");
session_unregister("aa");
?>请问 'cooliepath'是存放session id 的cookie地址,但'/cooliepath'究竟是相对于哪个路径的地址,(我怎么
找也找不到)。为什么 echo $cookie[lipath]; 的输出是空。
2.我目前的session放置位置是 c:\program files\apache group\apache\htdocs\anfield.com\
但我想修改存放路径(函数方法) 我用:session_save_path('c:\program files\apache group\apache\htdocs\test');
希望把session放到和anfield.com同一目录的test文件夹里面,我做了很多尝试,都失败,我应该怎么写
路径呢?