10-28小结

来源：互联网发布：android 阅读器源码编辑：程序博客网时间：2024/04/19 14:26
<?phpclass db{private $hostname;private $dbname;private $username;private $password;private $recourse;function __construct($hostname,$dbname,$username,$password){$this->hostname=$hostname;$this->dbname=$dbname;$this->username=$username;$this->password=$password;$this->connect();}function connect(){$this->recourse=mysql_connect($this->hostname,$this->username,$this->password);mysql_select_db($this->dbname);mysql_query('set names utf8');}function getrow($sql){$result = mysql_query($sql);return mysql_fetch_assoc($result);//从结果集中取得一行作为关联数组}function __destruct(){mysql_close($this->recourse);}}

<?phpclass Captcha{private $width;//验证码的宽度private $height;    //验证码的高度private $strNum;    //验证码字符的数量private $image;private $disTurbNum;public function __construct($width,$height,$strNum){$this->width = $width;$this->height = $height;$this->strNum = $strNum;$this-> disTurbNum = $this->width * $this->height/50; //像素密度}public function showImg(){//创建矩形框(背景颜色)$this->createBg();//设置干扰元素(像素点、线条)$this->setDisturb();//输出文字到矩形框$this->outPutStr();//输出\保存图像$this->outPutImg();} function createBg(){//创建画布$this->image = imagecreatetruecolor($this->width,$this->height);//分配画笔颜色$bgColor =imagecolorallocate($this->image,mt_rand(50,255),mt_rand(50,255),mt_rand(50,255));//填充颜色imagefill($this->image,0,0,$bgColor);//给背景创建一个边框$borderColor = imagecolorallocate($this->image,0,0,0);imagerectangle($this->image,0,0,$this->width-1,$this->height-1,$border);}//设置干扰元素private function setDisturb(){//像素点for($i=0;$i<$this->disTurbNum;$i++){$pxColor = imagecolorallocate($this->image,mt_rand(100,225),mt_rand(100,225),mt_rand(100,225));imagesetpixel($this->image,mt_rand(1,$this->width-2),mt_rand(1,$this->height-2),$pxColor);}//线条for($j=0;$j<20;$j++){$lineColor = imagecolorallocate($this->image,mt_rand(50,200),mt_rand(50,200),mt_rand(50,200));imageline($this->image,mt_rand(0,$this->width),mt_rand(0,$this->height),mt_rand(0,$this->width),mt_rand(0,$this->height),$lineColor);}}private function outPutStr(){//a-z   A-Z   0-9$lower_str = range('a','z');   //获得 从a-z之间的所有的单元$upper_str = range('A','Z');$num = range(0,9);//把这些数组合并$new_all = array_merge($lower_str,$upper_str,$num);//随机获得几个数组下标$keys = array_rand($new_all,$this->strNum);$str = '';//循环遍历下标,找到对应的元素foreach($keys as $value){$str .= $new_all[$value];}$strColor = imagecolorallocate($this->image,255,255,255);imagestring($this->image,5,50,3,$str,$strColor);//通常是保存到session$_SESSION['str'] = $str; }function getstr($userstr){if($userstr== $_SESSION['str']){ return true;}else{return false;}}private function outPutImg(){header('Content-Type:image/png');imagepng($this->image);}}

<?phpsession_start();header('Content-Type:text/html;charset=utf-8');if(isset($_GET['act'])){require 'includes/Captcha.class.php';$captcha=new Captcha(145,20,5);$captcha->showImg();}//验证验证码if(isset($_POST['sub'])){require 'includes/Captcha.class.php';$captcha=new Captcha(145,20,5);$userstr=$_POST['captcha'];$result=$captcha->getstr($userstr);if($result){//验证名字//验证密码$username=$_POST['username'];$password=$_POST['password'];require 'includes/db.class.php';$db=new db('localhost','ecshoptest','root','');$sql="select *from user where username='$username' and password='$password' ";$row=$db->getrow($sql);//var_dump($row);//if($row){header('location:index1.php');}else{echo'用户名或密码不正确，请重新输入';}is_array($row)?header('location:index1.php'):$alert='用户名或密码不正确，请重新输入';//三目运算符判断返回值是否为数组 如果不是给alert赋值}else{ echo redirect_url('验证码错误','privilege.php');}}function redirect_url($message,$url){if($message){$alert_str = "alert('$message')";}else{$alert_str = '';}echo <<<STR<script type="text/javascript">$alert_strwindow.location.href="$url";</script>STR;}?><html xmlns="http://www.w3.org/1999/xhtml"><head><title>ECSHOP 管理中心</title><meta content="text/html; charset=utf-8" http-equiv="Content-Type"><link type="text/css" rel="stylesheet" href="styles/general.css"><link type="text/css" rel="stylesheet" href="styles/main.css"><style type="text/css">body {  color: white;}</style><script src="../js/utils.js" type="text/javascript"></script><script src="js/validator.js" type="text/javascript"></script><script language="JavaScript"><!--// 这里把JS用到的所有语言都赋值到这里var process_request = "正在处理您的请求...";var todolist_caption = "记事本";var todolist_autosave = "自动保存";var todolist_save = "保存";var todolist_clear = "清除";var todolist_confirm_save = "是否将更改保存到记事本？";var todolist_confirm_clear = "是否清空内容？";var user_name_empty = "管理员用户名不能为空!";var password_invaild = "密码必须同时包含字母及数字且长度不能小于6!";var email_empty = "Email地址不能为空!";var email_error = "Email地址格式不正确!";var password_error = "两次输入的密码不一致!";var captcha_empty = "您没有输入验证码!";if (window.parent != window){  window.top.location.href = location.href;}//--></script></head><body style="background: #278296"><form onsubmit="return validate()" name="theForm" action="privilege.php" method="post">  <table cellspacing="0" cellpadding="0" align="center" style="margin-top: 100px">  <tbody><tr>    <td><img width="178" height="256" border="0" alt="ECSHOP" src="images/login.png"></td>    <td style="padding-left: 50px">      <table>      <tbody><tr>        <td>管理员姓名：</td>        <td><input type="text" name="username"></td><?if(isset($alert))echo $alert ?>      </tr>      <tr>        <td>管理员密码：</td>        <td><input type="password" name="password"></td>      </tr>            <tr>        <td>验证码：</td>        <td><input type="text" name="captcha"></td>      </tr>      <tr>      <td align="right" colspan="2"><img width="145" height="20" border="1" title="看不清？点击更换另一个验证码。" style="cursor: pointer;" onclick="this.src='privilege.php?act=captcha&'+Math.random()" alt="CAPTCHA" src="privilege.php?act=captcha">      </td>      </tr>            <tr><td colspan="2"><input type="checkbox" id="remember" name="remember" value="1"><label for="remember">请保存我这次的登录信息。</label></td></tr>      <tr><td> </td><td><input type="submit" class="button" name="sub" value="进入管理中心"></td></tr>      <tr>        <td align="right" colspan="2">» <a style="color:white" href="../">返回首页</a> » <a style="color:white" href="get_password.php?act=forget_pwd">您忘记了密码吗?</a></td>      </tr>      </tbody></table>    </td>  </tr>  </tbody></table>  <input type="hidden" value="signin" name="act"></form><script language="JavaScript"><!--  document.forms['theForm'].elements['username'].focus();    /**   * 检查表单输入的内容   */  function validate()  {    var validator = new Validator('theForm');    validator.required('username', user_name_empty);    //validator.required('password', password_empty);    if (document.forms['theForm'].elements['captcha'])    {      validator.required('captcha', captcha_empty);    }    return validator.passed();  }  //--></script></body></html>