上一次我们研究了guest.php文件.具体的问题还要求读者朋友自己深入的去实践,而且需要一些工具书来学习,如果您一点php的知识都没有,笔者奉劝您就不要想下看了,笔者没有太多的时间和篇幅去逐句探究一个php文件的用途和意义.好的,接下来我们来作edit.php这个文件.
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//edit.php

<?
   if ($Submit)
   {
if ($SavePassWord=="on")
{setcookie("TxtPassword","$TxtPassword",time()+30*24*3600);}
else
{setcookie("TxtPassword");}
   }
?>
<html>
<style type=text/CSS>
Td {FONT-SIZE: 10pt;}
TEXTAREA
{
FONT-FAMILY: "宋体";
FONT-SIZE: 10pt;
}

</style>
<head>
<meta http-equiv="Content-Language" content="zh-cn">
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>修改留言</title>
<?
require("sys.php");
function readvalue($tags,$tage)
{
global $message,$long,$reply;
$StrStart=strlen(strstr($message,$tags))-strlen($tags);//去除标记后变量所在字串的起始位置.
$StrEnd=strlen(strstr($message,$tage));
$len=$StrStart-$StrEnd;
$StrStart=$long-$StrStart;//起始字符.
$StrString=substr($message,$StrStart,$len);
return $StrString;
}

function save($record)
{
global $TxtContent,$TxtEmail,$TxtHomepage,$TxtEmail,$TxtName,$TxtFrom,$TxtReply,$REMOTE_ADDR,$guestfile;
$content=file($guestfile,"r");
$space = " ";
$time = date(Y年m月d日H小时i分);
$ip=$REMOTE_ADDR;
$TxtReply=StripSlashes($TxtReply);
$TxtContent=StripSlashes($TxtContent);
$TxtContent=htmlspecialchars($TxtContent);
$TxtContent=check_strlen_long($TxtContent);
$TxtContent=nl2br($TxtContent);
$Wcontent = "<tr><td><font color=#AB00E1>留言内容:</font><br><!--content>$TxtContent<!--endcontent> ";
$Wcontent=$Wcontent."<br><font color=#6633FF>留言人大名:</font><!--name>$TxtName<!--endname> ";
if ($TxtEmail !="")
{$Wcontent=$Wcontent."<br><font color=#9900CC>电子信箱</font><a href="