//登入页面$conn=mysql_connect('127.0.0.1','root','')or die("连接失败");mysql_select_db('tujian',$conn)or die("未找到该数据库");define(ALL_PS,"vivid"); mysql_query("set names GBK");if($_POST[submit]){$postcode=strtolower($_POST["code"]);$postcode=strtoupper($_POST["code"]);$uid=str_replace(" ","",$_POST[uid]);$sql="select * from users where `uid`='$_POST[uid]'";$query=mysql_query($sql);$user=is_array($row=mysql_fetch_array($query));$mi=$user?md5($_POST[pass].ALL_PS)==$row[pass]:FALSE;if($mi){$_SESSION[uid]=$row[uid];$_SESSION[name]=$row[name];$_SESSION[id]=$row[id];$_SESSION[user_shell]=md5($row[uid].$row[pass].ALL_PS);if( $_SESSION["code"]==$postcode){echo"<script>alert('登录成功!');location.href='index.php';</script>";}else{echo"<div class='show'>验证码输入错误，请重新输入！</div>";}}else{echo"<div class='show'>用户名或密码输入错误</div>";session_destroy();}}><SCRIPT language=javascript>function Checklogin(){if(myform.uid.value=="账号/学号"){alert("请填写登录名");myform.uid.focus();return false;}if(myform.pass.value=="密码/身份证后六位数"){alert("密码不能为空");myform.pass.focus();return false;if(myform.code.value=="验证码"){alert("请填写验证码");myform.code.focus();return false;}}</SCRIPT><style type="text/css"><!--body {background-image: url(images/user_loginbg.jpg); }--></style><style type="text/css"><!--.STYLE1 {color: #000000;font-size: 18px;}body {background-color: #f7f4f6;}.position{position: absolute;top: 10pxright: 200pxwidth: 296px;left: 878px;top: 161px;height: 304px;width: 258px;}.position2{position: absolute;left:63px;top:250px;}.position3{position:absolute;left: 935px;top: 122px;font-size:25px;font-family: Arial, Helvetica, sans-serif;}.STYLE8 {position: absolute;font-size: 30px;font-family: Arial, Helvetica, sans-serif;color: #0000FF;top: 0px;left: 40px;}.STYLE9 {font-size: 18px;font-family: "宋体";}.STYLE10 {font-family: "Courier New", Courier, monospace;font-weight: bold;}.STYLE11 {color: #FFFFFF;font-weight: bold;text-decoration:none;}.show{position:absolute;left:1135px;top:400px;}--></style><html><title>用户登录</title><body background="images/login.PN"><form action="" method="post" name="myform" onsubmit="return Checklogin();"><div class="position"><table width="296" height="250" align="right" bordercolor="#ffffff" bgcolor="#ffffff"><tr><td width="292" height="37" bgcolor="#ffffff"> <h1 class="STYLE1"> 欢迎登录</h1></td> </tr><tr><td><div align="center"><br> <input type="text" value="账号" onfocus="if(value=='账号') {value=''}" onblur="if (value=='') {value='账号'}" name="uid" style="width:180px;height:25px;color:#939597;"/><br></div></td></tr><tr><td> <div align="center"> <input type="text" value="密码" onfocus="if(value=='密码') {value=''}" onblur="if (value=='') {value='密码'}" name="pass" style="width:180px;height:25px;color:#939597;"/><br></div></td></tr><br><tr><td> <div align="center"> <input type="text" value="验证码" onfocus="if(value=='验证码') {value=''}" onblur="if (value==''){value='验证码'}" name="code" style="width:80px;height:25px;color:#939597;"/> <span style="color:#867e82;font-size:10pt;">填写下图所示文字</span><br /> <img src="code.php?" alt="点击刷新" onClick="this.src=this.src+'?'" /><span size="20px"style="color:#867e82;font-size:10pt;">看不清?点击图片刷新</span></p></div></td></tr><tr><td height="297"><div class="position2"> </div><span class="position2"><input type="submit" name="submit" style="background:#2c64f3; height:39px; width:110px; font-size: 24px; font-style: inherit; font-weight: normal;color:#fff" value="登入"/></span></td></tr></table></div><p class="STYLE8"> </p><p class="STYLE8"><span class="STYLE10">土建学院交流平台</span><span class="STYLE9"> 登录界面</span></p><p class="STYLE8"> </p><p class="STYLE8"> </p></form><p> </p><p> </p><p><div class="position3"><a href="register.php"class="STYLE11">立即注册</a></div></p></body></html>。