一个php作的文本留言本的例子(三)

上两节我针对guest.php和edit.php作了讲述.需要注意的是php和html的区别:
php通常是-->(1)<? echo("zihanonline");?>
(2)<? php
echo("zihanonline");
?>
(3)<script laanguage="php">
echo("zihanonline");
</script>
(4)<% echo("zihanonline");%>
等4种方式.不要混淆.
下面我们来研究信息管理:manage.php代码.
-----------
//manage.php<html>

<head>
<title>留言管理</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style>

</style>

</head>

<body bgcolor="#FFFFFF" background="back.gif">
<?
include('head.htm');
include("sys.php");
if ($password!=$managepwd and $dispflag)
{

echo "<meta http-equiv=Refresh content=5;url=guest.php>";
echo "<center>";
echo "<font color=red>密码错误!无法删除留言!</font>";
echo "<p>程序将在3秒返回</p>";
echo "<p> <a href=http://zihanonline.longcity.net>子汉在线</a>斑竹维护管理。</p>";
echo "<br>";
echo "</center>";

exit;
}

?>
<table width="445" border="0" align="center" bgcolor="#CCCCCC">
<form method="post" action="manage.php">
<?
if ($dispflag=="show")
{
$content = file($guestfile);
$count =count($content);
$text="";
for ($h=$count;$h>0;$h--)
{
$text=$text.'<tr><td>删除第'.$h."条留言:<input type=checkbox name=check$h value=$h></td></tr>nn";
$text=$text.$content[$h-1];
}
echo "$text";
}
?>
<input type=hidden name=password value=<? echo $password ?>>
<?
if ($submit)
{
if ($password!=$managepwd)
{
echo "<meta http-equiv=Refresh content=5;url=guest.php>";
echo "<center>";
echo "<font color=red>密码错误!无法删除留言!</font>";
echo "<p>程序将在3秒返回</p>";
echo "<p> <a href=http://zihanonline.longcity.net>子汉在线</a>斑竹维护管理。</p>";
echo "<br>";
echo "</center>";

exit;
}

if ($password==$managepwd)
{
$guest_content=file($guestfile);
$count=count($guest_content);
for ($j=1;$j<=$count;$j++)
{
$del_rec_num="check".$j;
$del_num=$$del_rec_num;
//echo "$del_num:$del_num";
$guest_content[$del_num-1]="";
}

$fp=fopen($guestfile,"w");
for ($i=0;$i<=$count-1;$i++)
{
if ($guest_content[$i]!="")
{
fputs($fp,$guest_content[$i],strlen($guest_content[$i]));
}
}
fclose($fp);
echo "<meta http-equiv=Refresh content=5;url=guest.php>";
echo "<center>";
echo "<p><font color=red>留言已正确删除</font></p>";
echo "<p>程序将在3秒返回</p>";
echo "<p> <a href=http://zihanonline.longcity.net>子汉在线</a>斑竹维护管理。</p>";
echo "<br>";
echo "</center>";
exit;
}
}
?>
<tr>
<td bgcolor="#f0f0f0">
<p align=center>
<input type=submit value=删除 name=submit>

<input type=reset value=重写 name=reset>
</td>
<tr>
</form>
</table>
<?include('bottom.htm');?>
</body>
</html>
------------
未完待续...

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