一个php作的文本留言本的例子(二)

更新时间:2023-04-06 05:32:01 阅读：评论：0

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.

———–

//edit.php

<?

if ($submit)

{

if ($savepassword==”on”)

{tcookie(“txtpassword”,”$txtpassword”,time()+30*24*3600);}

el

{tcookie(“txtpassword腌青辣椒”);}

}

?>

<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; chart=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;

}

$content=file($guestfile,”r”);

$message=$content[$record-1];

$long=st恋爱课rlen($message);

$txtcontent=readvalue(‘<!–content>’,'<!–endcontent>’);

$txtname=readvalue(‘<!–name>’,'<!–endname>’);

$txtfrom=readvalue(‘<!–from>’,'<!–endfrom>’);

$txtemail=readvalue(‘<!–email>’,'<!–endemail>’);

$txthomepage=readvalue(‘<!–homepage>’,'<!–endhomepage>’);

$txtcontent=strip_tags($txtcontent);

$tags=”<!–reply>”;

$txtreply=strstr($message,$tags);

$txtreply=ereg_replace(“””,”””,$txtreply);

if ($submit)

{

if ($txtpassword==$managepwd)

{

if ($txtname!=”” and $txtcontent!=””)

{

save($record);

echo “<meta http-equiv=refresh content=”1;url=guest.php”>”;

exit;

}el {$errorm=”留言人姓名和内容必填!!”;}

}

el {$errorm=”密码错误,只有管理员有权修改!!”;}

}

?>

</head>

<body bgcolor=”#ffffff” background=”back.gif”>

<? include(‘head.htm’);?>

<div align=”center”>

<center>

<table border=”1″ width=”68%” height=”31″ cellspacing=”0″ cellpadding=”7″ bordercolor=”#e3e3e3″>

<form action=”edit.php” method=post>

<?

if ($errorm and $submit)

{

echo”<tr>”;

echo”<td height=40 colspan=4>仰望星空与脚踏实地221;;

echo”<font color=red>出错了,</font>$errorm”;

echo”</td>”;

echo”</tr>”;

}

?>

<tr>

<td width=”18%” height=”37″ bgcolor=”#f0f0f0″><font color=”#000000″>留言大名</font></td>

<td width=”39%” height=”37″ bgco水产养殖专业lor=”#ffffff”>

<input type=”text” name=”txtname” size=”26″ value=<?echo “$txtname”?>>

　</td>

<td width=”11%” height=”37″ bgcolor=”#f0f0f0″><font color=”#000000″>来自</font></td>

<td width=”32%” height=”37″ bgcolor=”#ffffff”>

<input type=”text” name=”txtfrom” size=”20″ value=<?echo “$txtfrom”?>>

</td>

</tr>

<tr>

<td width=”18%” height=”31″ bgcolor=”#f0f0f0″><font color=”#000000″>主页地址</font></td>

<td width=”39%” height=”31″ bgcolor=”#ffffff”>

<input type=”text” name=”txthomepage” size=”26″ value=<?echo “$txthomepage”?>>

</td>

<td width=”11%” height=”31″ bgcolor=”#f0f0f0″><font color=”#000000″>email</font></td>

<td width=”32%” height=”31″ bgcolor=”#ffffff”>

<input type=”text” name=”txtemail” size=”20″ value=<?echo “$txtemail”?>>

</td>

</tr>

<tr bgcolor=”#ffffff”>

<td height=”31″ colspan=”4″><font color=”#000000″>留言内容</font></td>

</tr>

<tr bgcolor=”#f0f0f0″>

<td height=”105″ colspan=”4″ valign=”middle” align=”center”>

<textarea rows=”6″ name=”txtcontent” cols=”50″ wrap=”virtual”><? echo “$txtcontent”?>

</textarea>

</td>

</tr>

<tr bgcolor=”#ffffff”>

<td height=”40″ colspan=”4″ valign=”middle” align=”政治考试答题技巧;center”> <font color=”#000000″>修改密码</font>

<input type=”password” name=”txtpassword” size=”10″ value=<?echo “$txtpassword”?>>

<font color=”#000000″>是否保存密码</font>

<input type=”checkbox” name=”savepassword” value=”on” checked>

<input type=hidden name=record value=<? echo “$record”?>>