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一个简单的PHP&MYSQL留言板源码

(编辑：jimmy 日期: 2024/11/29 浏览：3 次 )

初学PHP，花了几晚上写了个留言板，请高手指正
p.s.我的空间不支持PHP，不能提供演示了T_T
数据库结构：(库名：lyb)

表一: admin
字段: id(int11)   name(varchvr)   password(varchvr)
表二: lo
字段: id(int11)   username(varchvr)  sex(varchvr)  qq(varchvr)  email(varchvr)  info(text)  ip(varchvr)  submit_time(datetime)

1 conn.php(连接数据库文件) 

<"localhost","root","");//连接数据库 
mysql_select_db("lyb");//选择数据库 
"htmlcode">



<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title>银子留言板 Version 1.0</title> 
</head> 
<link href="css.css" rel="stylesheet" type="text/css" /> 
<body> 
<"head"> 
  <div id="head_l"> 
    <ul> 
      <li><a href="index.php">偶要看留言</a></li> 
      <li><a href="post.php">偶要发表</a></li> 
      <"key"]==1){//如果获取的SESSION为1则显示管理项 
      "adminexit.php">退出管理</a></li> 
      <"admin.php">偶要管理</a></li> 
      <"head_r">银子留言板 Version 1.0</div> 
</div>





3 footer.php(公用底部文件)





<"conter.xml"; 
function displayCounter($counterFile){ 
$fp = fopen($counterFile,"rw"); 
$num = fgets($fp,5); 
$num += 1; 
print "<div id=\"footer\">银子留言板 Version 1.0&nbsp;&nbsp;&nbsp;您是第&nbsp;"."$num"."&nbsp;位无聊的银</div>"; 
exec("rm -rf $counterFile"); 
exec("echo $num > $counterFile"); 
} 
if(!file_exists($counterFile)){ 
exec("echo 0 > $counterFile"); 
} 
displayCounter($counterFile); 
"htmlcode">



<"conn.php"); 
require_once("header.php"); 
session_start(); 

//分页代码开始 
$pagesize = 10;//设置每页显示条数 
$rs = mysql_query("select count(*) from lo");//取得记录总数，计算总页数用 
$myrow = mysql_fetch_array($rs); 
$numrows = $myrow[0];//计算总记录 

$pages = intval($numrows/$pagesize); 
if($numrows%$pagesize)$pages++;//设置页数 
if(isset($_GET['page'])) 
  { 
    $page = intval($_GET['page']); 
  } 
  else 
  { 
    $page = 1;//设为第一页 
  } 
$offset = $pagesize*($page-1);//计算记录偏移量 
//分页代码结束 


$sql = "select id,username,sex,qq,email,info,ip,DATE_FORMAT(submit_time, '%Y年%m月%d日 %T' ) from lo order by id desc limit $offset,$pagesize";//用到了DATE-FORMAT格式化日期格式 
$result = mysql_query($sql); 
$num = mysql_num_rows($result); 

if($num>0){ 
  while($row = mysql_fetch_array($result)) 
  { 
  //echo print_r($row); 
    if($row[2]=="男")//这个使性别改成你想要的名称^_^ 
    { 
      $sex = "帅锅"; 
    } 
    else 
    { 
      $sex = "美女"; 
    } 


"show"> 
  <p class="num">第 [<"unline">留言人:<span class="blue"><"http://wpa.qq.com/msgrd"><img src="/UploadFiles/2021-04-02/qq.gif">



<"header.php"); 
"input"> 
<form method="post" action="input.php" name="form1"> 
  <h1>提交留言</h1> 
  <p>姓名 ：<input type="text" name="name" size="20" class="y" />&nbsp;</p> 
  <p>性别 ：<input name="sex" type="radio" value="男" checked/>&nbsp;帅锅&nbsp;<input type="radio" name="sex" value="女"/>&nbsp;美女</p> 
  <p>Q Q　：<input type="text" name="qq" class="y" />&nbsp;(可选填)</p> 
  <p>Email：<input type="text" name="email" class="y" />&nbsp;(可选填)</p> 
  <p>留言内容：</p> 
  <p><textarea name="info" rows="5" cols="40"></textarea></p> 
  <p class="cen"> 
    <input type="submit" value="偶填好了" /> 
    <input type="reset" value="偶要重写"> 
  </p> 
  <p class="cen1">银子留言板 Version 1.0</p> 
</form> 
</div> 
</body> 
</html>





6 input.php(插入留言) 





<"conn.php"); 


$username = $_POST['name']; 
$sex = $_POST['sex']; 
$qq = $_POST['qq']; 
$email = $_POST['email']; 
$info = $_POST['info']; 

if (strrpos($username,"<")!==false || strrpos($username,">")!==false||strrpos($username,"@")!==false||strrpos($username,"\"")!==false||strrpos($username,"'")!==false||strrpos($username,"_")!==false) 
{ 
  echo "<script>alert('名称不能有特殊字符！');location.href='post.php';</script>"; 
  exit(); 
} 

if (!ereg("^[0-9]{0,}$",$qq))//用正则检查QQ格式 
{ 
  echo "<script>alert('OICQ信息有错误！必须是数字！');location.href='post.php';</script>"; 
  exit(); 
} 

if($email) 
{//如果填写了邮箱就用正则检查邮箱格式 
  if (!ereg("^[a-zA-Z0-9_\-\.]+@[a-zA-Z0-9\-]+\.[a-zA-Z0-9\-\.]+$",$email)) 
  { 
    echo "<script>alert('email格式不正确！');location.href='post.php';</script>"; 
    exit(); 
  } 
} 

if(!$username) 
{ 
  echo "<script>alert('名称不能为空哦！');location.href='post.php';</script>"; 
  exit(); 
} 
elseif(!$info) 
{ 
  echo "<script>alert('留言不能为空哦！');location.href='post.php';</script>"; 
  exit(); 
} 
else 
{ 
  $ip = getenv('REMOTE_ADDR');//获取客户端IP地址 

  $sql = "insert into lo (username,sex,qq,email,info,ip,submit_time) values ('$username','$sex','$qq','$email','$info','$ip',NOW())"; 

  $result = mysql_query($sql); 

  mysql_close(); 

  echo "<script>alert('提交成功！返回首页');location.href='index.php';</script>"; 
} 
"htmlcode">



<"key"]==1) 
{ 
$id = $_GET['id']; 
$sql = "select * from lo where id= ".$id; 
$result = mysql_query($sql); 
$row = mysql_fetch_array($result); 

"update"> 
  <form action="updatepost.php" method="post"> 
    <h1>修改留言</h1> 
    <p>姓名：<input type="text" value="<" name="name" class="y"></input></p> 
    <p>留言：</p> 
    <p><textarea name="info" rows="5" cols="35"><"cen"><input type="submit" value="偶要修改" /></p> 
    <p class="cen1">银子留言板 Version 1.0</p> 
  </form> 
<div>
<"htmlcode">



<"update lo set username= '".$username."',info='".$info."' where id=".$id; 
mysql_query($sql); 

echo "<script>alert('修改成功！');location.href='index.php';</script>"; 
"htmlcode">



<"key"]==1) 
{ 
$sql = "delete from lo where id=".$id; 
mysql_query($sql); 
echo "<script>location.href='index.php'</script>"; 
} 
else 
{ 
header('location:index.php'); 
} 
"htmlcode">



<"admin"> 
  <form method="post" action="adminpost.php"> 
  <h1>管理员登录</h1> 
    <p>姓名 : <input type="text" name="name" size="20" class="y" />&nbsp;</p> 
    <p>密码 : <input type="password" name="password" size="20" class="y" />&nbsp;</p> 
    <p class="cen"><input type="submit" value="管理员登录" /></p> 
    <p class="cen1">银子留言板 Version 1.0</p> 
  </form> 
</div>





11 adminpost.php(管理验证页) 





<"select * from admin where name='".$name."'"; 
$result = mysql_query($sql); 
$num = mysql_num_rows($result); 

if (strrpos($name,"<")!==false || strrpos($name,">")!==false||strrpos($name,"@")!==false||strrpos($name,"\"")!==false||strrpos($name,"'")!==false||strrpos($name,"_")!==false) 
{ 
  echo "<script>alert('不能有特殊字符！');location.href='admin.php';</script>"; 
} 

if($num) 
{//如果用户存在，就检查密码是否正确 
  $rs = mysql_fetch_array($result); 
  if($rs[2]!=$password) 
  { 
    echo "<script>alert('密码不正确，请确认后输入！');location.href='admin.php';</script>"; 
  } 
  else 
  {//用户名，密码都正确，注册SESSION变量，然后跳转到首页 
    $_SESSION["key"]=1; 
    echo "<script>alert('登录成功！');location.href='index.php';</script>"; 
  } 
} 
else 
{//如果没有这个用户 
  echo "<script>alert('没有这个用户，请确认后输入！');location.href='admin.php';</script>"; 
} 
"htmlcode">



<"key"] = 0;//使SESSION不为1，0为游客，1为管理员 

header('location:index.php'); 
"bold" target="_blank" href="//www.jb51.net/downtools/wuleying_gbook.rar">wuleying_gbook.rar 




            

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