PHP PDO登錄...登錄錯誤後回聲電子郵件失敗

我有一個登錄頁面和儀表盤頁面，用戶將登錄后土地（注：儀表板頁面是在另一個文件夾）....PHP PDO登錄...登錄錯誤後回聲電子郵件失敗

的login.php

<?php 
include 'dbcon.php'; 
if(isset($_POST['sdsubmit'])){ 
    $sdemail=$_POST['sdemail']; 
    $sdpassword=$_POST['sdpassword']; 
    $sql = "SELECT * FROM students WHERE email = ? && password= ?"; 
    $query=$db->prepare($sql); 
    $query->execute(array($sdemail, $sdpassword)); 
    $row = $query->fetch(PDO::FETCH_NUM); 
    if($row > 0){ 
     session_start(); 
     $sdemail=$_SESSION['sdemail']; 
     header("Location: student/index.php"); 
     exit(); 
    } 
    else{ 
     echo "<script>alert('Sorry, email or password is incorrect. Please try again'); 
</script>"; 
    } 
}

形式（同一頁中的login.php）

<form id="login-form1" action="<?php echo $_SERVER["PHP_SELF"]; ?>" method="post" role="form" style="display: block;"> 
     <div class="form-group"> 
       <input type="email" name="sdemail" id="sdemail" required="required" tabindex="1" class="form-control" placeholder="Email" value=""> 
     </div> 
      <div class="form-group"> 
       <input type="password" name="sdpassword" id="sdpassword" tabindex="2" class="form-control" placeholder="Password"> 
      </div> 
     <div class="form-group"> 
     <div class="row"> 
     <div class="col-sm-6 col-sm-offset-3"> 
       <input type="submit" name="sdsubmit" id="login-submit" tabindex="4" class="form-control btn btn-login" value="Login"> 
     </div> 
    </div> 
     </div> 
</form>

儀表板（的index.php）

<?php 
session_start(); 
echo $_SESSION['sdemail'];

dbcon.php（數據庫連接）

<?php 
$errmsg_arr = array(); 
$errflag = false; 
try{ 
    $db=new PDO('mysql:host=localhost; dbname=internshala', 'root', ''); 
} catch (Exception $ex) { 
    echo "Sorry, cannot connect to database"; 
}

錯誤

說明：未定義指數：sdemail在C：\第3行的xampp \ htdocs \ Internshala \ student \ index.php

來源

2017-05-29 rohit chakrabarti

[PHP的可能重複：「請注意：未定義的變量」，「通知：未定義索引「和」注意：未定義偏移量「]（https://stackoverflow.com/questions/4261133/php-notice-undefined-variable-notice-undefined-index-and-notice-undef） – Qirel

您從未設置過'代碼中的任何地方都可以使用$ _SESSION ['sdemail']。 – Qirel

你好，我已經設置$ _SESSION ['sdemail'] = $ sdemail爲：'if（$ row> 0）{session_start（）; $ sdemail = $ _ SESSION ['sdemail']; header（「Location：student/index.php」）; exit（）; }' –

session_start(); 
$sdemail=$_SESSION['sdemail']; // refer 1 
$_SESSION['sdemail'] = $sdemail; // just replace the above line with this 
In dashboard.php 
if(isset($_SESSION['sdemail'])) 
{ echo $sdemail; }// replace this

這裏要指定從會話價值$ sdemail（$ _ SESSION [ 'sdemail']）

來源

2017-05-29 15:15:05 Satish51

PHP PDO登錄...登錄錯誤後回聲電子郵件失敗

回答

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