===================
先创建note.php
<html>
<head><title>PHP留言本</title></head>
<style type="text/css">
<!--
.{ font-family: "宋体"; font-size: 9pt;}
-->
</style>
<body bgcolor=#cccccc>
<center><font style=" color=color:#cccccc;font-size:12pt">php留言本</font>
<form method="POST" action="result.php">
<table border=1 width=555>
<tr>
<td width=20%>您的大名：
</td>
<td width=50%><input type=text name=nickname style=width:100%>
</td>
</tr>
<tr>
<td width=20%>电子邮件：
</td>
<td width=50%><input type=text name=email style=width:100%>
</td>
</tr>
<tr >
<td width=20%>留言：<br><br><br>
</td>
<td width=80%> <textarea name=notes cols="70" rows="5" ></textarea>
</td>
</tr>
<tr>
<td width=20%> </td>
<td width=80% align=center><input type="submit" name=submit value="确定"><input type="reset" value="重写"><input name=clear type="submit" value="清除" >
</td>
</tr></table>
</form></table>
<table border=1 width=555>
<tr><td>
<hr width=550><?
$f = fopen("note.txt","r");
$msg = fread($f,filesize("note.txt"));
fclose($f);
print "$msg";
?></td>
</tr>
</table>
</center>
<p align=right><font style=" color=color:#cccccc;font-size:12pt">作者：<a href="mailto:dengfzj@126.com">业如</a><br>
主页：<a href="http://weibo.com/dengyr">微博</a></font>
</body>
</html>
然后创建
result.php
<html>
<head>
<style type="text/css">
</style>
<body bgcolor=#cccccc>
<table align=center border=0 width=555> <tr>
<?php
//先判断是否清除
if($_POST["clear"]=="清除")
{
print "<td align=center><b><h1 ><font color=red>已清除！</font></h1></td><br><br>";
$f=fopen("note.txt","w");
fwrite($f,"");
fclose($f);
}
else{
if(($_POST["nickname"]&&$_POST["email"]&&$_POST["notes"])!=0)
{
$t = date(Y年m月d日);
$note=str_replace("<","<",$_POST["notes"]);
$note=str_replace(">",">",$note);
$note=str_replace("
","<br> ",$note);
$main="<font color=#FF6600>网上大名：</font><a href=mailto:".$_POST
["email"].">".$_POST["nickname"]."</a>(".$t.")<br><font color=#FF6600>
留言：</font>".$note." <br><hr width=550>";
$f=fopen("note.txt","a");
fwrite($f,$main);
fclose($f);
print "<td align=center><b><h1 ><font color=red>成功！</font></h1></td><br><br>";
print "$main";
print "<b><font font-size=9pt color=#FF99FF>谢谢您的留言!</font><br>";
}
else{
if ($_POST["nickname"]=="")
print "<b><font font-size=9pt color=#00CC00>您的大名？</font><br>";
if($_POST["email"]=="")
print "<b><font font-size=9pt color=#00CC00>您电子邮件？</font><br>";
if($_POST["notes"]=="")
print "<b><font font-size=9pt color=#00CC00>您没有要说的吗？</font><br>";
print "<td align=center><b><h1 ><font color=red>请检查以上各项！</font></h1></td><br><br>";
}
}
?> </tr>
</table>
<p><br></p>
<p><br></p>
<center><a href="note.php">返回</a></center>
<p><br></p>
<p align=right><font style=" color=color:#cccccc;font-size:12pt">作者：
<a href="mailto:dengfzj@126.com">业如</a><br>
主页：<a href="http://weibo.com/dengyr">微博</a></font>
</body>
</html>
ok代码结束了
原文：http://www.cnblogs.com/dengfzj/p/7653364.html