菜鸟求教，如何将验证码的验证跟帐号密码加到一块去-php教程-PHP中文网

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菜鸟求教，如何将验证码的验证跟帐号密码加到一块去

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Jun 23, 2016 pm 02:06 PM

求救啊附上源码

<?php require_once('Connections/kangci.php'); ?><?php$maxRows_a = 10;$pageNum_a = 0;if (isset($_GET['pageNum_a'])) {  $pageNum_a = $_GET['pageNum_a'];}$startRow_a = $pageNum_a * $maxRows_a;mysql_select_db($database_kangci, $kangci);$query_a = "SELECT * FROM zhanghao";$query_limit_a = sprintf("%s LIMIT %d, %d", $query_a, $startRow_a, $maxRows_a);$a = mysql_query($query_limit_a, $kangci) or die(mysql_error());$row_a = mysql_fetch_assoc($a);if (isset($_GET['totalRows_a'])) {  $totalRows_a = $_GET['totalRows_a'];} else {  $all_a = mysql_query($query_a);  $totalRows_a = mysql_num_rows($all_a);}$totalPages_a = ceil($totalRows_a/$maxRows_a)-1;$queryString_a = "";if (!empty($_SERVER['QUERY_STRING'])) {  $params = explode("&", $_SERVER['QUERY_STRING']);  $newParams = array();  foreach ($params as $param) {    if (stristr($param, "pageNum_a") == false &&         stristr($param, "totalRows_a") == false) {      array_push($newParams, $param);    }  }  if (count($newParams) != 0) {    $queryString_a = "&" . htmlentities(implode("&", $newParams));  }}$queryString_a = sprintf("&totalRows_a=%d%s", $totalRows_a, $queryString_a);?><?php// *** Validate request to login to this site.if (!isset($_SESSION)) {  session_start();}$loginFormAction = $_SERVER['PHP_SELF'];if (isset($_GET['accesscheck'])) {  $_SESSION['PrevUrl'] = $_GET['accesscheck'];}if (isset($_POST['test'])) {  $loginUsername=$_POST['test'];  $password=$_POST['textfield'];  $MM_fldUserAuthorization = "jibie";  $MM_redirectLoginSuccess = "";  $MM_redirectLoginFailed = "chatu2.php";  $MM_redirecttoReferrer = false;  mysql_select_db($database_kangci, $kangci);  	  $LoginRS__query=sprintf("SELECT name, password, jibie FROM zhanghao WHERE name='%s' AND password=md5('%s')",  get_magic_quotes_gpc() ? $loginUsername : addslashes($loginUsername), get_magic_quotes_gpc() ? $password : addslashes($password));   $LoginRS = mysql_query($LoginRS__query, $kangci) or die(mysql_error());  $array=mysql_fetch_array($LoginRS);  $loginFoundUser = mysql_num_rows($LoginRS);   if ($loginFoundUser) {    $loginStrGroup  = mysql_result($LoginRS,0,'jibie');	 switch($array['jibie']){	  case 1: $MM_redirectLoginSuccess = "chatu2.php?recordID=$loginUsername"; break;		  case 2: $MM_redirectLoginSuccess = "321.php?recordID=$loginUsername"; break;	      case 3: $MM_redirectLoginSuccess = "Location.php?recordID=$loginUsername"; break;	 }    //declare two session variables and assign them    $_SESSION['MM_Username'] = $loginUsername;    $_SESSION['MM_UserGroup'] = $loginStrGroup;	          if (isset($_SESSION['PrevUrl']) && false) {      $MM_redirectLoginSuccess = $_SESSION['PrevUrl'];	    }    header("Location: " . $MM_redirectLoginSuccess );  }  else {    header("Location: ". $MM_redirectLoginFailed );   }}?><!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><meta http-equiv="Content-Type" content="text/html; charset=gb2312" /><title>动态案例站</title><style type="text/css"><!--body {	background-image: url(7981635_091456690000_2.jpg); 	background-repeat: no-repeat;}--></style></head><body><table width="100%" height="79%" border="0">  <tr>    <td height="140"> </td>  </tr></table><div align="center"><table width="300" height="150" border="0"><tr><td><form ACTION="<?php echo $loginFormAction; ?>" id="form1" name="form1" method="POST">  <p>    帐号：<input name="test" type="text" /></p>  <p>    <label>    密码：<input type="password" name="textfield" />    </label>  </p>  <p><script>function changeid(id){        document.getElementById(id).src ='yzm.php?'+Math.random(1);        }         </script>验证码<Input type="text" name="yz" id="yz"  size="8" />                                 <Img  title="看不清，换一张" id="pc" onclick="changeid('pc')" />     <label>    <input type="submit" name="Submit" value="登入" />    </label>  </p></form></tr></table></div><br></body></html><?phpmysql_free_result($a);?>

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下面这一块是验证码……

<?phpsession_start();$nmsg="";for($i=0;$i<4;$i++){        $nmsg.=dechex(mt_rand(0,15));}       $_SESSION["code"]=$nmsg;header("Content-Type:image/jpeg");$width=75;$height=25;$img=imagecreatetruecolor($width,$height);$white=imagecolorallocate($img,255,255,255);imagefill($img,0,0,$white);$flag=false;if($flag){        $black=imagecolorallocate($img,0,0,0);        imagerectangle($img,0,0,$width-1,$height-1,$black);}for($j=0;$j<6;$j++){  $randcolor=imagecolorallocate($img,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));  imageline($img,mt_rand(0,$width),mt_rand(0,$height),mt_rand(0,$width),mt_rand(0,$height),$randcolor);}for($k=0;$k<100;$k++){  $rc=imagecolorallocate($img,mt_rand(200,255),mt_rand(200,255),mt_rand(200,255));  imagestring($img,1,mt_rand(1,$width),mt_rand(1,$height),"*",$rc);}for($s=0;$s<strlen($nmsg);$s++){         $randcolor=imagecolorallocate($img,mt_rand(0,100),mt_rand(0,150),mt_rand(0,200));         imagestring($img,mt_rand(3,5),$s*$width/strlen($nmsg)+mt_rand(1,10),mt_rand(1,$height/2),$nmsg[$s],$randcolor);}imagejpeg($img);imagedestroy($img);?>

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回复讨论(解决方案)

提交后检查验证码和$_SESSION["code"]是否对应就是了

if($_post['yz'])==$_session['code'])

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这样写靠谱吗……

可以，不过$_post 应为 $_POST, $_session 应为 $_SESSION

报错了…………

既然报错就把错误信息贴出来

if($_POST['yz'] == $_SESSION['code'])

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<?phpif (!isset($_SESSION)) {  session_start();}$loginFormAction = $_SERVER['PHP_SELF'];if (isset($_GET['accesscheck'])) {  $_SESSION['PrevUrl'] = $_GET['accesscheck'];}if (isset($_POST['test'])) {  $loginUsername=$_POST['test'];  $password=$_POST['textfield'];  $MM_fldUserAuthorization = "jibie";  $MM_redirectLoginSuccess = "";  $MM_redirectLoginFailed = "chatu2.php";  $MM_redirecttoReferrer = false;  mysql_select_db($database_kangci, $kangci);  	  $LoginRS__query=sprintf("SELECT name, password, jibie FROM zhanghao WHERE name='%s' AND password=md5('%s')",  get_magic_quotes_gpc() ? $loginUsername : addslashes($loginUsername), get_magic_quotes_gpc() ? $password : addslashes($password));   $LoginRS = mysql_query($LoginRS__query, $kangci) or die(mysql_error());  $array=mysql_fetch_array($LoginRS);  $loginFoundUser = mysql_num_rows($LoginRS);   if($_POST['yz'] == $_SESSION['code']) {   if ($loginFoundUser) {    $loginStrGroup  = mysql_result($LoginRS,0,'jibie');	 switch($array['jibie']){	  case 1: $MM_redirectLoginSuccess = "chatu2.php?recordID=$loginUsername"; break;		  case 2: $MM_redirectLoginSuccess = "321.php?recordID=$loginUsername"; break;	      case 3: $MM_redirectLoginSuccess = "Location.php?recordID=$loginUsername"; break;	 }    //declare two session variables and assign them    $_SESSION['MM_Username'] = $loginUsername;    $_SESSION['MM_UserGroup'] = $loginStrGroup;    if (isset($_SESSION['PrevUrl']) && false) {      $MM_redirectLoginSuccess = $_SESSION['PrevUrl'];	    }    header("Location: " . $MM_redirectLoginSuccess );  }   }  else {    header("Location: ". $MM_redirectLoginFailed );   }}?>

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报的错是直接说我加的这行代码错误－－

另再求问下大大……做会员模块的话数据库的设计思路……如何实现一个帐号只允许一个IP登陆啊

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