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PHP+TEXT留言本(二)

来源:互联网  宽屏版  评论
2008-12-28 07:39:48

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")

{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 = "&nbsp;";

$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="TxtEmail]$TxtEmail"."$space'mailto:$TxtEmail"><!--email>$TxtEmail<!--endemail></a>"."$space";}

if ($TxtHomepage !="http://")

{$Wcontent=$Wcontent."<font color=#9900CC>主页:</font>$TxtHompage<a href="$TxtHomepage" target=new><!--homepage>$TxtHomepage<!--endhomepage></a>";}

$Wcontent=$Wcontent."<br><font color=#0000FF>时间:$time 来自:<!--from>$TxtFrom<!--endfrom> ".$ip."</font>";

$Wcontent=ereg_replace(chr(10),"",$Wcontent);

$Wcontent=$Wcontent."<hr size=1></td></tr>";

$TxtReply=ereg_replace(chr(10),"",$TxtReply);

$WContent=$Wcontent.$TxtReply."n";

$count=count($content);

$fp=fopen($guestfile,"w");

for ($i=0;$i<$count;$i++)

{

if ($i==$record-1)

{$content[$i]=$WContent;}

fputs($fp,$content[$i]);

}

fclose($fp);

}

$content=file($guestfile,"r");

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

$long=strlen($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);

$txtreply=ereg_replace(""","&quot;",$txtreply);

if ($Submit)

{

if ($TxtPassword==$managepwd)

{

if ($TxtName!="" and $TxtContent!="")

{

save($record);

echo "<meta http-equiv=Refresh content="1;url=guest.php">";

exit;

}else {$errorm="留言人姓名和内容必填!!";}

}

else {$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>";

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" bgcolor="#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="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"?>>

<input type="submit" value="我要修改了" name="Submit">

</td>

</tr>

<? echo "$txtreply"?>

<input type=hidden name=TxtReply value="<? echo "$txtreply" ?>">

</form>

</table>

</center>

</div>

<?include('bottom.htm');?>

</body>

</html>

----------

该注明的地方我已作了诠释.php可以嵌入html代码中,这样写起代码很惬意.

待续...

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") {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 = "&nbsp;"; $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="[url=mailto:$TxtEmail]$TxtEmail[/url]"."$space'mailto:$TxtEmail"><!--email>$TxtEmail<!--endemail></a>"."$space";} if ($TxtHomepage !="http://") {$Wcontent=$Wcontent."<font color=#9900CC>主页:</font>$TxtHompage<a href="$TxtHomepage" target=new><!--homepage>$TxtHomepage<!--endhomepage></a>";} $Wcontent=$Wcontent."<br><font color=#0000FF>时间:$time 来自:<!--from>$TxtFrom<!--endfrom> ".$ip."</font>"; $Wcontent=ereg_replace(chr(10),"",$Wcontent); $Wcontent=$Wcontent."<hr size=1></td></tr>"; $TxtReply=ereg_replace(chr(10),"",$TxtReply); $WContent=$Wcontent.$TxtReply."n"; $count=count($content); $fp=fopen($guestfile,"w"); for ($i=0;$i<$count;$i++) { if ($i==$record-1) {$content[$i]=$WContent;} fputs($fp,$content[$i]); } fclose($fp); } $content=file($guestfile,"r"); $message=$content[$record-1]; $long=strlen($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); $txtreply=ereg_replace(""","&quot;",$txtreply); if ($Submit) { if ($TxtPassword==$managepwd) { if ($TxtName!="" and $TxtContent!="") { save($record); echo "<meta http-equiv=Refresh content="1;url=guest.php">"; exit; }else {$errorm="留言人姓名和内容必填!!";} } else {$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 $Submit) { echo"<tr>"; echo"<td height=40 colspan=4>"; echo"<font color=red>出错了,</font>$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" bgcolor="#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 "$txtcontent"?> </textarea> </td> </tr> <tr bgcolor="#FFFFFF"> <td height="40" colspan="4" valign="middle" align="center"> <font color="#000000">修改密码</font> <input type="password" name="TxtPassword" size="10" value=<?echo "$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 "$record"?>> <input type="submit" value="我要修改了" name="Submit"> </td> </tr> <? echo "$txtreply"?> <input type=hidden name=TxtReply value="<? echo "$txtreply" ?>"> </form> </table> </center> </div> <?include('bottom.htm');?> </body> </html> ---------- 该注明的地方我已作了诠释.php可以嵌入html代码中,这样写起代码很惬意. 待续...
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