[转]php用户登录代码
一款讲得非常详细的登录代码，对php入门者有很大的帮助，有需要的朋友可以免费查看。
效果图。
index.php
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gbk" /> <title>系统登录</title> <link href="css.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="box"> <div id="denglu"> <div id="pic"> 系统后台登陆</div> <form action="check.php" method="post"> <p>用户名： <input type="text" name="name" id="name" /> <span class="must">*</span></p> <p>密 码： <input name="password" type="password" id="password" /> <span class="must">*</span></p> <p>验证码： <input name="check" type="text" id="check" size="8" /> <img src="piccheck.php" /> <span class="must">*</span></p> <p class="form_button"> <input type="submit" name="sub" id="sub" value="登陆" /> <input type="reset" name="unsub" id="unsub" value="取消" /> </p> </form> </div> </div> </body> </html>
数据库教程连接 connect.php
<?php
$connect = mysql_connect("localhost", "root", "") or die("服务器连接失败");
mysql_select_db("test", $connect) or die("没有建立相应的数据库");
$sql = "select * from admin";
?>图片验证码 piccheck.php
<?php /* * Created on 2011-8-10 * * To change the template for this generated file go to * Window - Preferences - PHPeclipse - PHP - Code Templates */ session_start(); $code = rand(0, 9) . dechex(rand(10, 15)) . rand(0, 9) . dechex(rand(10, 15)); $_SESSION[pic] = $code; $image = imagecreatetruecolor(50, 18); $color = imagecolorallocate($image, 0, 0, 0); //第一次使用调色板，会设为背景颜色 $colortext = imagecolorallocate($image, rand(100, 255) , rand(100, 255) , rand(100, 255)); imagestring($image, 10, rand(1, 15) , rand(1, 5) , $code, $colortext); imagegif($image); ?>
css.css文件
@charset utf-8;
body
{
background-color:#9CF;
text-align:left;
}
#denglu
{
width:400px;
background-image:url(images/login.gif);
background-repeat:no-repeat;
height:320px;
text-indent:6px;
margin:0 auto;
}
#box #denglu form
{
position:relative;
top:50px;
left:10px;
width:92%;
}
.must
{
color:red;
font-size:12px;
}
#box #denglu #pic
{
background-image:url(images/dot1.gif);
background-repeat:no-repeat;
height:20px;
width:100px;
font-size:12px;
color:red;
text-align:left;
line-height:18px;
left:10px;
top:30px;
position:relative;
} 本文地址：http://www.phprm.com/base/40032.html
转载随意，但请附上文章地址:-)