一个php作的文本留言本的例子(四)

  这一节我们将dele.php和sys.php放上来.

  ---------

  //dele.php<html>

  <head>

  <title>删除留言</title>

  <style>

  <!--

  A:link {text-decoration: none ; color:0000ff}

  A:visited {text-decoration: none; color:004080}

  A:active {text-decoration: none}

  A:hover {text-decoration: underline; color:ff0000}

  BODY {FONT-SIZE:10pt}

  TH {FONT-SIZE:10 pt}

  TD {FONT-SIZE: 10pt}

  -->

  </style>

  <meta http-equiv="Content-Type" content="text/html; charset=gb2312">

  </head>

  <?

  require("sys.php");

  if ($Submit)

  {

  if ($password<>$managepwd)

  {$errorm="<font color=red>密码错误</font>.无权操作..";}

  else

  {

  $content=file($guestfile);

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

  $count=count($content);

  if ($dele=="delreply")

  {

  $replylen=strlen(strstr($message,"<!--reply>"));

  $long=strlen($message);

  $len=$long-$replylen;

  $message=substr($message,0,$len);

  }

  else

  {$message="";}

  //writefile

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

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

  {

  if ($i==($record-1)){$content[$i]=$message;}

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

  }//end for

  fclose($fp);

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

  exit;

  }

  }// end ifSubmit

  $content=file($guestfile);

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

  $found=ereg("<!--reply>",$message);

  ?>

  <body bgcolor="#FFFFFF" background="back.gif">

  <? include("head.htm"); ?>

  <table width="68%" border="1" cellpadding="5" align="center" cellspacing="0" bordercolor="#F2F2F2">

  <form action=dele.php method=post>

  <?

  if ($errorm)

  {

  echo "<tr>";

  echo "<td height=27>$errorm</td>";

  echo "</tr>";

  }

  ?>

  <? echo $message ?>

  <tr align="center">

  <td height="37" bgcolor="#f0f0f0">

  <?

  if ($found)

  {

  echo "<input type=radio name=dele value=delall>";

  echo "全部删除 ";

  echo "<input type=radio name=dele value=delreply checked>";

  echo "仅删除回复";

  }

  ?>

  <font color="#000000">管理密码</font>

  <input type="password" name="password" size="10">

  <input type=hidden name=record value=<? echo "$record";?>>

  <input type="submit" name="Submit" value="我要删除了">

  </td>

  </tr>

  </form>

  </table>

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

  </body>

  </html>

  ------

  //sys.php

  <title>zihanonline</title><?

  $managepwd='zihanonline';

  $guestfile="guest.txt";

  function check_strlen_long($txt)

  {

  $count=0;

  $arrtemp=$txt;

  $len=strlen($txt);

  $txt=$txt.'            ';

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

  {

  if (ord($txt[$i])<128)

  { $count=$count+1;}

  if (ord($txt[$i])==10 or ord($txt[$i])==32)

  {$count=0;}

  if ($count>=70)

  {

  for ($j=$i;$j<$len;$j++)

  {

  $txt[$j+1]=$arrtemp[$j];

  }

  $txt[$i]="n";

  $len=$len+1;

  $txt[$len]=$arrtemp[$len-1];

  $count=0;

  $arrtemp=$txt;

  }//end if count

  }

  $txt=trim($txt);

  return $txt;

  }//end function

  function encode ($txt)

  {

  $txt=strip_tags($txt);

  $txt=htmlspecialchars($txt);

  $message=StripSlashes($txt);

  return $message;

  }

  function ubb($txt)

  {

  }

  ?>

  <body bgcolor="#FFFFFF" background="back.gif">

  ----------

  注意sys.php中的" $managepwd='zihanonline' "一栏中等号后的是留言本的管理密码号,此时是默认的zihanonline.您可以修改为自己的号码.

  未完待续...