PHP教程：php实现留言板功能（会话控制）
2017-9-16编辑:daibenhua
本文实例为大家分享了php留言板功能的具体代码，供大家参考，具体内容如下
数据库用到的三张表
一.登录界面 (denglu.php login.php)
1.denglu.php
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<html><head><meta charset="UTF-8"><title><body><h1>开发部内部留言板<form action="login.php" method="post"><div>用户名：<input type="text" name="UserName" /><div>口令：<input type="password" name="PassWord" /><input type="submit" value="登录" /><a href="denglu.php" style="text-decoration:none"><input type="button" value="复位" /> |
2.login.php
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session_start();$UserName = $_POST["UserName"];$PassWord = $_POST["PassWord"];require "DBDA.class1.php";$db = new DBDA();$sql = "select PassWord from yuangong where UserName = '{$UserName}'";$arr = $db->query($sql);if(count($arr)){ if($arr[0][0] == $PassWord && !empty($PassWord)) { //存储用户名 $_SESSION["UserName"] = $UserName; header("location:main.php"); }}else{ header("location:denglu.php");} |
二.主界面(main.php tuichu.php)
1.main.php
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http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档<body>session_start(); // 防止绕过登陆直接进入主界面if(empty($_SESSION["UserName"])){ header("location:denglu.php"); exit;} require "DBDA.class1.php";$db = new DBDA();$UserName = $_SESSION["UserName"];?><div><a href="fabu.php">发布信息<a href="tuichu.php">退出系统/><br /><h1>留言信息：<table width="100%" border="1" > <tr> <td>发送人 <td>发送时间 <td>接收人 <td>信息内容 //显示接收者是我的，或者是所有人的 $sql = "select * from liuyan where Recever='{$UserName}' or Recever='suoyou'"; $arr = $db->query($sql); foreach($arr as $v) { echo "<tr> <td>{$v[1]} <td>{$v[3]} <td>{$v[2]} <td>{$v[4]} } ?> |
2.tuichu.php
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session_start();unset($_SESSION["UserName"]);header("location:denglu.php"); |
三.发送页面(fabu.php fabuchuli.php)
1.fabu.php
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http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>无标题文档<body><div><a href="main.php">查看信息<a href="tuichu.php">退出系统<h1>信息发送：<form action="fabuchuli.php" method="post"><div>接收人：<select name="jsr"> <option value="suoyou">所有人 session_start(); $UserName = $_SESSION["UserName"]; require"DBDA.class1.php"; $db = new DBDA(); //方法一 $sql = "select friend.Friend,yuangong.Name from friend,yuangong where friend.Friend = yuangong.UserName and friend.Me = '{$UserName}'"; $arr = $db->query($sql); foreach($arr as $v) { echo "<option value='{$v[0]}'>{$v[1]} } //方法二 /*$sql = "select Friend from friend where Me ='{$UserName}'"; $arr = $db->query($sql); foreach($arr as $v) { $v[0]; $sname = "select Name from yuangong where UserName = '{$v[0]}'"; $aname = $db->query($sname); echo"<option value='{$v[0]}'>{$aname[0][0]} }*/ ?> <div>信息内容：<textarea name="neirong"><input type="submit" value="发送" /><a href="fabu.php" style="text-decoration:none"><input type="button" value="复位" /> |
2.fabuchuli.php
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session_start();$UserName = $_SESSION["UserName"];$jsr = $_POST["jsr"];$nr = $_POST["neirong"];$Times = date("Y-m-d H:i:s");require"DBDA.class.php";$db = new DBDA();$sql = "insert into liuyan values('','{$UserName}','{$jsr}','{$Times}','{$nr}')";$db->query($sql,0);header("location:fabu.php"); |
以上就是本文的全部内容，希望对大家的学习有所帮助