PHP と MYSQL が共同で単純なゲストブックプログラムを作成する-php手册-php.cn

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)

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

2 header.php(公用头部文件)

PHP和MYSQL联合打造简单留言本程序

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偶要发表

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偶要管理

PHP和MYSQL联合打造简单留言本程序

3 footer.php(公用底部文件)

$counterFile="conter.xml";
function displayCounter($counterFile){
$fp = fopen($counterFile,"rw");
$num = fgets($fp,5);
$num += 1;
print "

";
exec("rm -rf $counterFile");
exec("echo $num > $counterFile");
}
if(!file_exists($counterFile)){
exec("echo 0 > $counterFile");
}
displayCounter($counterFile);
?>

4 index.php(首页)

require_once("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";
        }
?>

第 [] 条留言

留言人: 性别: 留言时间： IP: 更改删除

留言内容:

}
}
else
{
echo "

无数据......

";
}
?>

$first=1;
$prev=$page-1;
$next=$page+1;
$last=$pages;
if($page==1&&$pages>1)
{
    echo "首页 | ";
    echo "上一页 | ";
    echo "下一页 | ";
    echo "尾页 | ";
}
elseif($page>=1&&$page!=$pages&&$num>0)
{
    echo "首页 | ";
    echo "上一页 | ";
    echo "下一页 | ";
    echo "尾页 | ";
}
elseif($page==$pages&&$page!=1)
{
    echo "首页 | ";
    echo "上一页 | ";
    echo "下一页 | ";
    echo "尾页 | ";
}
elseif($page==$pages)
{
    echo "首页 | ";
    echo "上一页 | ";
    echo "下一页 | ";
    echo "尾页 | ";
}
else
{
    echo "首页 | ";
    echo "上一页 | ";
    echo "下一页 | ";
    echo "尾页 | ";
}
?>
共页 | 当前第页 | 共条留言

mysql_close();
?>
require_once("footer.php");
?>

5 post.php(提交留言页面)

require_once("header.php");
?>

6 input.php(插入留言)

require_once("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>";
}
?>

7 update.php(修改留言页)

session_start();
require_once('conn.php');
require_once('header.php');
if($_SESSION["key"]==1)
{
$id = $_GET['id'];
$sql = "select * from lo where id= ".$id;
$result = mysql_query($sql);
$row = mysql_fetch_array($result);
?>

}
else
{
header('location:index.php');
}
?>

8 updatepost(修改提交页)

require_once('conn.php');
$username = $_POST['name'];
$info = $_POST['info'];
$id = $_GET['id'];
//echo $id;
$sql = "update lo set username= '".$username."',info='".$info."' where id=".$id;
mysql_query($sql);
echo "<script>alert('修改成功！');location.href='index.php';</script>";
?>

9 delete.php(删除留言页)

session_start();
require_once('conn.php');
$id=$_GET['id'];
if($_SESSION["key"]==1)
{
$sql = "delete from lo where id=".$id;
mysql_query($sql);
echo "<script>location.href='index.php'</script>";
}
else
{
header('location:index.php');
}
?>

10 admin.php(管理登录页)

require_once('conn.php');
require_once('header.php');
?>

11 adminpost.php(管理验证页)

session_start();
require_once('conn.php');
$name = $_POST['name'];
$password = $ _POST['パスワード'];
$sql = "select * from admin where name='".$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('特殊文字符は使用できません！');location.href='admin.php';</script>";
}
if ($num)
{//如果用户存在，就检查密码有無正确
$rs = mysql_fetch_array($result);
if($rs[2]!=$password)
{
echo "<script>alert('密码不正确，请确认後输入！');location.href='admin.php';</script>";
}
else
{//用户名、密码都正确、注册SESSION变量、その後首页に飛びます
$_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，请确认後输入！');location.href='admin.php';</script>";
}
?>