一个可分页的基于文本的PHP留言板

12/13/2000来源:PHP实例人气:94826

    小弟初学php,编了一个留言板程序,自我感觉良好,故厚着脸皮放了上来,请各位大哥指正。源程序如下:
<?php
//文件名:guest.php
//设定部分
$guestfile="guest";//纪录留言的文本文件
$home="index.html";//返回的主页
$imagedir="image"; //图像文件的目录
$backimage=$imagedir."/bk.gif";//背景图像
$backcolor="#ceffff";//背景颜色,在$backimage=""时起作用
?>
<html>
<head>
<?php
if($QUERY_STRING!="") {
  $page = $QUERY_STRING;
} else {
  $page = 1;
}
if($mode=="add"){
  $name=htmlspecialchars(trim($name));
  $title=htmlspecialchars(trim($title));
  $data=nl2br(htmlspecialchars($data));
  $data=str_replace("r","",$data);
  $data=str_replace("x0A","",$data);
  $data=str_replace(" ","&nbsp;",$data);
  if($data=="") $data=" ";
  $e_mail=trim($e_mail);
  if($e_mail=="") $e_mail=0;
  $url=trim($url);
  if($url=="http://" || $url=="") $url=0;
  $time=date("Y")."年".date("m")."月".date("d")."日[".date("H").":".date("i").":".date("s")."]";
  if($name=="" || $title==""){
    echo "<script Language="javaScript">n";
    echo "  alert("请至少输入姓名与留言标题。");n";
    echo "history.back();";
    echo "</script></head></html>n";
    exit;
  }
  $adddata=$name."t".$e_mail."t".$url."t".$title."t".$data."t".$icon."t".$time."n";
  if(file_exists($guestfile)){
    $filebuffer=file($guestfile);
    if(sizeof($filebuffer)>100){
      for($i=0;$i<100;$i++)
        $newbuffer[i]=$filebuffer[i];
    }
    else{
      $newbuffer=$filebuffer;
    }
    $fp=fopen($guestfile,"w");
    fputs($fp,$adddata);
    fclose($fp);
    $buffer=implode("",$newbuffer);
    $fp=fopen($guestfile,"a");
    fputs($fp,$buffer);
    fclose($fp);

  }
  else{
    $fp=fopen($guestfile,"w");
        fwrite($fp,$adddata);
        fclose($fp);
  }
}
?>
<meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=gb2312">
<title>留言板</title>
<style>
a{text-decoration:none; font-size:9pt; color:blue}
a:visited {text-decoration:none; color:009999}
a:hover {color:red; text-decoration:underline}
td{font-size:9pt;line-height:14pt}
P{font-size:9pt}
</style>
</head>
<?php
if($backimage!="" && file_exists($backimage)){
  echo "<body background="".$backimage."" bgPRoperties="fixed">n";
}
else{
  echo "<body bgcolor="".$backcolor."">n";
}
?>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
  <tr bgcolor="#9999FF">
    <td height="28">
      <div align="center"><b>供电9901网上空间留言板</b></div>
    </td>
  </tr>
<tr><td><div align="right"><a href="<? echo $home; ?>">[返回首页]</a></div></td></tr>
</table>
<font size="2">
<form method="post" action="guest.php">
  <input type="hidden" name="mode" value="add">
  <p>姓名:
    <input type="text" name="name" size="20">
    <br>
    E_Mail:
    <input type="text" name="e_mail" size="20">
    <br>
    主页:
    <input type="text" name="url" value="http://" size="30">
    <br>
    留言标题:
    <input type="text" name="title" size="50">
    <br>
    留言内容:(不支持HTML)<br>
    <textarea name="data" rows="5" cols="60"></textarea>
  <div id="Layer1" style="position:absolute; left:460px; top:152px; width:301px; height:104px; z-index:1">
    <p>表情:</p>
    <p>
      <input type="radio" name="icon" value="1">
      <img src="<? echo $imagedir."/1.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="2">
      <img src="<? echo $imagedir."/2.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="3">
      <img src="<? echo $imagedir."/3.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="4" checked>
      <img src="<? echo $imagedir."/4.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="5">
      <img src="<? echo $imagedir."/5.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="6">
      <img src="<? echo $imagedir."/6.gif"; ?>" width="15" height="15"><br>
      <input type="radio" name="icon" value="7">
      <img src="<? echo $imagedir."/7.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="8">
      <img src="<? echo $imagedir."/8.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="9">
      <img src="<? echo $imagedir."/9.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="10">
      <img src="<? echo $imagedir."/10.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="11">
      <img src="<? echo $imagedir."/11.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="12">
      <img src="<? echo $imagedir."/12.gif"; ?>" width="15" height="15"><br>
      <input type="radio" name="icon" value="13">
      <img src="<? echo $imagedir."/13.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="14">
      <img src="<? echo $imagedir."/14.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="15">
      <img src="<? echo $imagedir."/15.gif"; ?>" width="15" height="15">
      <input type="radio" name="icon" value="16">
      <img src="<? echo $imagedir."/16.gif"; ?>" width="15" height="15"> </p>
  </div>
  </p>
  <p align="center">
    <input type="submit" name="b1" value="写入">
    <input type="reset" name="b2" value="重写">
  </p>
</form>
<hr>
<?php
if(!file_exists($guestfile)){
  echo "<p align="center">没有留言</p>";
}
else{
  $filebuffer=file($guestfile);
  $size=sizeof($filebuffer);
  $pages=ceil($size/20);
  echo "<p align="center">共".$size."条留言&nbsp;&nbsp;&nbsp;&nbsp;第".$page."页/共".$pages."页<br>";
  if($page>1){
    $prev=$page-1;
    echo "<a href="guest.php?".$prev."">&lt;&lt;</a>&nbsp;";
  }
  for($i=1;$i<=$pages;$i++){
    echo "&nbsp;<a href="guest.php?".$i."">".$i."</a>&nbsp;";
  }
  if($page<$pages){
    $next=$page+1;
    echo "<a href="guest.php?".$next."">&nbsp;&gt;&gt;</a>";
  }
  echo "</p></font><table width="650" border="0" cellspacing="0" cellpadding="0">";
  for($i=($page-1)*20; $i<$page*20 && $i<$size; $i++){
    $buffer=explode("t",$filebuffer[$i]);
    echo "<tr><td valign="top" width="25"><img src="".$imagedir."/".$buffer[5].".gif"></td>";
    echo "<td valign="top" width="250"><p align="left">".$buffer[3]."</p></td>";
    echo "<td valign="top" width="80"><p align="left"><B>(".$buffer[0].")</B></p></td>";
    echo "<td valign="top" width="35"><p align="center">";
    if($buffer[2]!="0"){
      echo "<a href="".$buffer[2]."">主页</a>";
    }
    else{
      echo "主页";
    }
    echo "</p></td>";
    echo "<td valign="top" width="35"><p align="center">";
    if($buffer[1]!="0"){
      echo "<a href="mailto:".$buffer[1]."">E_Mail</a>";
    }
    else{
      echo "E_Mail";
    }
    echo "</p></td>";
    echo "<td valign="top" width="175"><p align="left">".$buffer[6]."</p></td>";
    echo "</tr><tr><td>&nbsp;</td>";
    echo "<td colspan="5" width="575">".$buffer[4]."</td></tr><tr><td>&nbsp;</td></tr>";
  }
}
?>
</table><hr><table width="100%" border="0" cellspacing="0" cellpadding="0"><tr><td>
<div align="center">本网站由<a href="mailto:gdgzljx@163.net">疯狂电脑工作室</a>制作   2000</div></td></tr></table>
</body></html>   
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