PHP制作留言板
做基础的留言板功能 需要三张表:
员工表,留言表,好友表
首先造一个登入页面:
<form action="drcl.php" method="post"> <div>帐号:<input type="text" name="zhang"/></div> <div>口令:<input type="text" name="mi"/></div> <input type="submit" value="登入"/> </form>
上图:
然后来写处理页面:
<?php session_start(); //session存储数据 include ("db.class.php"); //引用类 $db = new db(); //造方法 $zhang = $_POST["zhang"]; $mi = $_POST["mi"]; $sql = "select mi from yuangong WHERE zhang = '{$zhang}'"; $arr = $db->Query($sql); if(!empty($mi)&&$mi = $arr &&!empty($zhang)) { $_SESSION["zhang"] = $zhang; //即将跳转页面之前,把帐号存到session里面 header("location:zym.php"); } else { echo "登入失败了"; } ?>
正常的处理登入的页面只不过把账号存了一下session
登入上进入主页面
再来是主页面了:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>无标题文档</title> </head> <body> <h1>留言板</h1> <div><a href="fbym.php">发布信息</a></div> <div><a href="ddrr.php" onclick=" return confirm('注销当前用户?')">注销登入</a></div> <table border="1" cellpadding="0" cellspacing="0" width="100%"> <tr> <td>发件人</td> <td>收件人</td> <td>发布时间</td> <td>内容</td> </tr>
<?php session_start(); //存储数据 if(empty($_SESSION["zhang"])) { header("location:ddrr.php"); //防止输入网址进入 exit; } $zhang = $_SESSION["zhang"]; include ("../db.class.php"); $db = new db(); $sql = "select name from yuangong WHERE zhang = '{$zhang}'"; $attr = $db->Query($sql); //取到登入的name echo "<h5>欢迎你:{$attr[0][0]}</h5>"; //输出登入的name $sql = "select * from liuyan WHERE shou = '{$zhang}' or shou = 'all' ORDER BY times DESC "; //条件!!我只看自己或所有人的 $arr = $db->Query($sql); foreach ($arr as $v){ $shou = aname($v[2]); $fa = aname($v[1]); //用方法 echo "<tr> <td>{$fa}</td> <td>{$shou}</td> <td>{$v[3]}</td> <td>{$v[4]}</td> </tr>"; } //返回姓名 function aname($zhang) { global $db; //设置全局变量! if($zhang == "all") { //如果接收到的是all,显示: return "所有人"; } else { //如果是自己的,根据帐号查name $sql = "select name from yuangong WHERE zhang ='{$zhang}' "; $arr = $db->Query($sql); //二维数组 return $arr[0][0]; } } ?>
</table> </body> </html>
查找的条件即是只查自己的好友或者是all的所有人
还要注意一点便是要把调用的db设为全局变量
图:
留言板需要发布信息:
发布信息页面:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>无标题文档</title> </head> <body> <h1>发布信息</h1>
<?php session_start(); //存储数据 if(empty($_SESSION["zhang"])) { header("location:ddrr.php"); //防止输入网址进入 exit; } $zhang = $_SESSION["zhang"]; include ("../db.class.php"); $db = new db(); $shaoyou = "select * from firend WHERE me = '{$zhang}'"; $ahaoyou = $db->Query($shaoyou); ?>
<form action="fbcl.php" method="post"> <div> 接收人: <select name="shou"> <option value="all">所有</option>
<?php foreach ($ahaoyou as $v) { $name = aname($v[2]); echo "<option value='{$v[2]}'>{$name}</option>"; } ?>
</select></div> <br/> <div>留言内容: <input type="text" name="lynr"/></div> <br/> <input type="submit" value="发送"/> <input type="reset" value="清空"/> </form>
<?php function aname($zhang) { global $db; //设置全局变量! if($zhang == "all") { //如果接收到的是all,显示: return "所有人"; } else { //如果是自己的,根据帐号查name $sql = "select name from yuangong WHERE zhang ='{$zhang}' "; $arr = $db->Query($sql); //二维数组 return $arr[0][0]; } } ?>
<a href="zym.php">查看信息</a> <a href="ddrr.php" onclick="return confirm('确定要退出此帐号?')">注销登入</a> </body> </html>
最后就是发布信息的处理页面:
<?php session_start(); $uid = $_SESSION["zhang"]; include("../db.class.php"); $db = new db(); $jsr = $_POST["shou"]; $neirong = $_POST["lynr"]; $sj = date("Y-m-d H:i:s"); $sql = "insert into liuyan values('','{$uid}','{$jsr}','{$sj}','{$neirong}',0)"; if($db->Query($sql,0)) { header("location:zym.php"); } else { echo "发布失败!"; }
图:
我用小花的账号给小明发一条留言:
所以 登入小明的帐号
图:
没错,他收到了小花的这条留言