在php中登录页不起作用

-6

为什么这个登录页面不能正常工作？它似乎没有显示错误，但不会通过mysqli和重定向进行身份验证。在php中登录页不起作用

见下

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 
<!-- saved from url=(0077)file:///C:/Users/Emi/AppData/Local/Temp/Web%20Page%20Maker/Preview/page5.html --> 
<html> 
    <head> 
     <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> 
      <title>Teacher Login</title> 
      <meta name="generator" content="Web Page Maker"> 
      <style type="text/css"> 
       /*----------Text Styles----------*/ 
       .ws6 {font-size: 8px;} 
       .ws7 {font-size: 9.3px;} 
       .ws8 {font-size: 11px;} 
       .ws9 {font-size: 12px;} 
       .ws10 {font-size: 13px;} 
       .ws11 {font-size: 15px;} 
       .ws12 {font-size: 16px;} 
       .ws14 {font-size: 19px;} 
       .ws16 {font-size: 21px;} 
       .ws18 {font-size: 24px;} 
       .ws20 {font-size: 27px;} 
       .ws22 {font-size: 29px;} 
       .ws24 {font-size: 32px;} 
       .ws26 {font-size: 35px;} 
       .ws28 {font-size: 37px;} 
       .ws36 {font-size: 48px;} 
       .ws48 {font-size: 64px;} 
       .ws72 {font-size: 96px;} 
       .wpmd {font-size: 13px;font-family: Arial,Helvetica,Sans-Serif;font-style: normal;font-weight: normal;} 
       /*----------Para Styles----------*/ 
       DIV,UL,OL /* Left */ 
       { 
       margin-top: 0px; 
       margin-bottom: 0px; 
       } 
      </style> 

      <style type="text/css"> 
       div#container 
       { 
        position:relative; 
        width: 1273px; 
        margin-top: 0px; 
        margin-left: auto; 
        margin-right: auto; 
        text-align:left; 
       } 
       body {text-align:center;margin:0} 
      </style> 
    </head> 
    <body bgcolor="#EBEBEB"> 
    <?php 
    if(isset($_POST['login'])) 
    { 
     session_start(); 
     include 'mysqlconn.php'; 
     $con = mysqli_connect($host, $dbuser, $pass, $db) or die('Cannot Connect'); 

     $username = mysqli_real_escape_string($con,$_POST['username']); 
     $password = mysqli_real_escape_string($con,$_POST['password']); 

     $sql = "SELECT id FROM tinfoz WHERE username = '$username' AND password = '$password'"; 
     $result = mysqli_query($con,$sql); 

     $row = mysqli_fetch_array($result,MYSQLI_ASSOC); 
     $active = $row['active']; 

     $count = mysqli_num_rows($result); 

     if($count ==1) 
     { 
      session_register("username"); 
      $_SESSION['login_user'] = $username; 

      header("Location: newHome.php?login=success"); 
     } 
     else{ 
      echo '<script type= text/javascript>'; 
      echo 'alert("Error Please Verify Username and Password")'; 
      echo '</script>'; 
      } 
    } 
    ?> 
    <div id="container"> 
    <div id="roundrect1" style="position:absolute; overflow:hidden; left:20px; top:17px; width:1233px; height:591px; z-index:0"><img border="0" width="100%" height="100%" alt="" src="./teacherLogin_files/shapeS1TNG.gif"></div> 

    <div id="image1" style="position:absolute; overflow:hidden; left:60px; top:48px; width:260px; height:67px; z-index:1"><img src="./teacherLogin_files/text827854609.gif" alt="" title="" border="0" width="260" height="67"></div> 

    <div id="hr1" style="position:absolute; overflow:hidden; left:64px; top:126px; width:1169px; height:17px; z-index:2"> 
    <hr size="4" width="1169" color="#C0C0C0"> 
    </div> 

    <div id="hr2" style="position:absolute; overflow:hidden; left:49px; top:569px; width:1174px; height:17px; z-index:3"> 
    <hr size="2" width="1174"> 
    </div> 

    <div id="text1" style="position:absolute; overflow:hidden; left:49px; top:583px; width:439px; height:24px; z-index:4"> 
    <div class="wpmd"> 
    <div><font class="ws8">EM Software Nigeria </font><font class="ws8">©</font><font class="ws8"> 2016 All Rights Reserved</font></div> 
    </div></div> 

    <div id="text2" style="position:absolute; overflow:hidden; left:70px; top:151px; width:150px; height:26px; z-index:5"> 
    <div class="wpmd"> 
    <div><font face="Verdana" class="ws11">Teacher Login </font></div> 
    </div></div> 

    <form name="form1" id="form1" action="teacherLogin.php"style="margin:0px"> 
    <input name="username" type="text" style="position:absolute;width:294px;left:539px;top:247px;z-index:10"> 
    <input name="password" type="password" style="position:absolute;width:294px;left:538px;top:297px;z-index:11"> 
    <input name="login" type="submit" value="Login" style="position:absolute;left:644px;top:342px;z-index:12"> 
    </form> 

    <!--[if IE]><div id="table1" style="position:absolute; overflow:hidden; left:378px; top:227px; width:513px; height:169px; z-index:7; border:#C0C0C0 1px solid"><![endif]--> 
    <!--[if !IE]>--><div id="table1" style="position:absolute; overflow:hidden; left:378px; top:227px; width:511px; height:167px; z-index:7; border:#C0C0C0 1px solid"><!--<![endif]--> 

    <div class="wpmd"> 
    <div><table bgcolor="#FFFFFF" border="0" bordercolorlight="#C0C0C0" bordercolordark="#808080"> 
    <tbody><tr valign="top"> 
    <td width="648" height="305"><br> 
    </td> 
    </tr> 
    </tbody></table> 
    </div> 
    </div></div> 

    <div id="text3" style="position:absolute; overflow:hidden; left:398px; top:251px; width:150px; height:30px; z-index:8"> 
    <div class="wpmd"> 
    <div><font face="Verdana" class="ws11">Teacher Staff ID: </font></div> 
    </div></div> 

    <div id="text4" style="position:absolute; overflow:hidden; left:438px; top:298px; width:86px; height:22px; z-index:9"> 
    <div class="wpmd"> 
    <div><font face="Verdana" class="ws11">Password: </font></div> 
    </div></div> 

    </div> 
    </body> 
</html>

代码为什么不回应呢？

来源

2016-02-17 Nnaerich Doughan

只是一个提示，使用准备好的语句，这是非常不安全的代码.. – Firewizz

最令人担忧的事情不是它不” t工作，但密码以纯文本形式存储在您的数据库中。 – Devon

它应该是'$ username = $ _SESSION ['login_user'];'而不是 – Panda

1.   <form name="form1" id="form1" 
      action="teacherLogin.php" method="post" style="margin:0px"> 


2. ALSO HERE  

    else{ 
        echo '<script type= "text/javascript">'; 
        echo 'alert("Error Please Verify Username and Password")'; 
        echo '</script>'; 


        }

来源

2016-02-17 14:10:33

这不是唯一的错误在这里。再看一遍。 –

做这个更改并检查警报是否工作 –

解决以下几件事：

1）在你的表单中使用post方法。

2）使用预处理语句选择数据。

3）将数据库中的密码保存为md5。

4）$active = $row['active'];这将不起作用，因为您尚未从数据库中选择active字段。

5）您在同一个文件中使用了$con = mysqli_connect($host, $dbuser, $pass, $db) or die('Cannot Connect');，那么为什么您需要mysqlconn.php？

来源

2016-02-17 14:13:27

你的形式应该是：

<form name="form1" id="form1" method="post" style="margin:0px">

的action="teacherLogin.php"为你的PHP代码在同一个文件进行处理，而不是在另一个文件是不需要的。

而且，正如我在评论中已经指出：

$username = $_SESSION['login_user'];

应该是这个样子的$_SESSION['login_user']赋给变量$username，而不是相反。

来源

2016-02-17 14:13:30 Panda

现在工作！所有作品correctlyhad 2改变了一些东西

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 
<!-- saved from url=(0077)file:///C:/Users/Emi/AppData/Local/Temp/Web%20Page%20Maker/Preview/page5.html --> 
<html><head><meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> 
<title>Teacher Login</title> 
<meta name="generator" content="Web Page Maker"> 
<style type="text/css"> 
/*----------Text Styles----------*/ 
.ws6 {font-size: 8px;} 
.ws7 {font-size: 9.3px;} 
.ws8 {font-size: 11px;} 
.ws9 {font-size: 12px;} 
.ws10 {font-size: 13px;} 
.ws11 {font-size: 15px;} 
.ws12 {font-size: 16px;} 
.ws14 {font-size: 19px;} 
.ws16 {font-size: 21px;} 
.ws18 {font-size: 24px;} 
.ws20 {font-size: 27px;} 
.ws22 {font-size: 29px;} 
.ws24 {font-size: 32px;} 
.ws26 {font-size: 35px;} 
.ws28 {font-size: 37px;} 
.ws36 {font-size: 48px;} 
.ws48 {font-size: 64px;} 
.ws72 {font-size: 96px;} 
.wpmd {font-size: 13px;font-family: Arial,Helvetica,Sans-Serif;font-style: normal;font-weight: normal;} 
/*----------Para Styles----------*/ 
DIV,UL,OL /* Left */ 
{ 
margin-top: 0px; 
margin-bottom: 0px; 
} 
</style> 

<style type="text/css"> 
div#container 
{ 
    position:relative; 
    width: 1273px; 
    margin-top: 0px; 
    margin-left: auto; 
    margin-right: auto; 
    text-align:left; 
} 
body {text-align:center;margin:0} 
</style> 

</head> 
<body bgcolor="#EBEBEB"> 
<div id="container"> 
<div id="roundrect1" style="position:absolute; overflow:hidden; left:20px; top:17px; width:1233px; height:591px; z-index:0"><img border="0" width="100%" height="100%" alt="" src="./teacherLogin_files/shapeS1TNG.gif"></div> 

<div id="image1" style="position:absolute; overflow:hidden; left:60px; top:48px; width:260px; height:67px; z-index:1"><img src="./teacherLogin_files/text827854609.gif" alt="" title="" border="0" width="260" height="67"></div> 

<div id="hr1" style="position:absolute; overflow:hidden; left:64px; top:126px; width:1169px; height:17px; z-index:2"> 
<hr size="4" width="1169" color="#C0C0C0"> 
</div> 

<div id="hr2" style="position:absolute; overflow:hidden; left:49px; top:569px; width:1174px; height:17px; z-index:3"> 
<hr size="2" width="1174"> 
</div> 

<div id="text1" style="position:absolute; overflow:hidden; left:49px; top:583px; width:439px; height:24px; z-index:4"> 
<div class="wpmd"> 
<div><font class="ws8">EM Software Nigeria </font><font class="ws8">©</font><font class="ws8"> 2016 All Rights Reserved</font></div> 
</div></div> 

<div id="text2" style="position:absolute; overflow:hidden; left:70px; top:151px; width:150px; height:26px; z-index:5"> 
<div class="wpmd"> 
<div><font face="Verdana" class="ws11">Teacher Login </font></div> 
</div></div> 

<form name="form1" id="form1" action="teacherLogin.php" method="post"style="margin:0px"> 
<input name="username" type="text" style="position:absolute;width:294px;left:539px;top:247px;z-index:10"> 
<input name="password" type="password" style="position:absolute;width:294px;left:538px;top:297px;z-index:11"> 
<input name="login" type="submit" value="Login" style="position:absolute;left:644px;top:342px;z-index:12"> 
</form> 

<?php 
if(isset($_POST['login'])) 
{ 
    session_start(); 
    include 'mysqlconn.php'; 
    $con = mysqli_connect($host, $dbuser, $pass, $db) or die('Cannot Connect'); 

    $username = mysqli_real_escape_string($con,$_POST['username']); 
    $password = mysqli_real_escape_string($con,$_POST['password']); 

    $sql = "SELECT id FROM tinfoz WHERE username = '$username' AND password = md5('$password')"; 
    $result = mysqli_query($con,$sql); 

    $row = mysqli_fetch_array($result,MYSQLI_ASSOC); 
    //$active = $row['active']; 

    $count = mysqli_num_rows($result); 

    if($count ==1) 
    { 
     //session_register("username"); 
     $username = $_SESSION['username']; 

     header("Location: newHome.php?login=success"); 
    } 
    else{ 
     echo '<script type= text/javascript>'; 
     echo 'alert("Error Please Verify Username and Password")'; 
     echo '</script>'; 
     } 
} 
?> 
<!--[if IE]><div id="table1" style="position:absolute; overflow:hidden; left:378px; top:227px; width:513px; height:169px; z-index:7; border:#C0C0C0 1px solid"><![endif]--> 
<!--[if !IE]>--><div id="table1" style="position:absolute; overflow:hidden; left:378px; top:227px; width:511px; height:167px; z-index:7; border:#C0C0C0 1px solid"><!--<![endif]--> 

<div class="wpmd"> 
<div><table bgcolor="#FFFFFF" border="0" bordercolorlight="#C0C0C0" bordercolordark="#808080"> 
<tbody><tr valign="top"> 
<td width="648" height="305"><br> 
</td> 
</tr> 
</tbody></table> 
</div> 
</div></div> 

<div id="text3" style="position:absolute; overflow:hidden; left:398px; top:251px; width:150px; height:30px; z-index:8"> 
<div class="wpmd"> 
<div><font face="Verdana" class="ws11">Teacher Staff ID: </font></div> 
</div></div> 

<div id="text4" style="position:absolute; overflow:hidden; left:438px; top:298px; width:86px; height:22px; z-index:9"> 
<div class="wpmd"> 
<div><font face="Verdana" class="ws11">Password: </font></div> 
</div></div> 

</div> 



</body></html>

一切似乎都做工精细现在

来源

2016-02-17 14:25:33

在php中登录页不起作用

回答

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