PHP+TEXT留言本(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...