Question

查看我认为相关的所有其他PHP Session页面，并且无法找到我的页面上的问题。以下是我的3页代码：

Login.htm（可行）

      <body>
  <section class="container">
    <div class="login">
      <h1>Login to Web App</h1>
      <form method="post" action="checklogin.php">
        <p><input type="text" name="login" value="" placeholder="Username or Email"></p>
        <p><input type="password" name="password" value="" placeholder="Password"></p>
        <p class="remember_me">
          <label>
            <input type="checkbox" name="remember_me" id="remember_me">
            Remember me on this computer
          </label>
        </p>
        <p class="submit"><input type="submit" name="commit" value="Login"></p>
      </form>
    </div>

    <div class="login-help">
      <p>Forgot your password? <a href="index.html">Click here to reset it</a>.</p>
    </div>
  </section>

  <section class="about">
    <p class="about-links">
      <a href="http://www.cssflow.com/snippets/login-form" target="_parent">View Article</a>
      <a href="http://www.cssflow.com/snippets/login-form.zip" target="_parent">Download</a>
    </p>
    <p class="about-author">
      &copy; 2012&ndash;2013 <a href="http://thibaut.me" target="_blank">Thibaut Courouble</a> -
      <a href="http://www.cssflow.com/mit-license" target="_blank">MIT License</a><br>
      Original PSD by <a href="http://www.premiumpixels.com/freebies/clean-simple-login-form-psd/" target="_blank">Orman Clark</a>
  </section>
</body>

checklogin.php（这样可行，会话已成功创建，您可以在代码中查看我的测试以确保会话实际设置）

<?php
session_start();
$con=mysqli_connect("someServer","root","somePassword","someDatabase");
// Check connection
if (mysqli_connect_errno()) {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
}
//Get the two variables for login and password from the form on login.htm
$user = $_POST['login'];
$password = $_POST['password'];
//Write out your MySql Query
$result = mysqli_query($con,"SELECT * FROM members where username = '$user' and password = '$password'");
//Get the row number your query sends out. This is to make sure the username / password combo actually exist
$num_row = mysqli_num_rows($result);

if ( $num_row == 1 )
{
while($row = mysqli_fetch_array($result)) {
//Get the data from MySQL
  echo $row['username'] . " " . $row['password'];
  //Set whatever is in username to the variable $user1
  $user1 = $row['username'];
  echo "<br>";
  echo $user1;
  echo "<br>";
  //Start Sessions
  //set the session username5 to whatever was in the SQL table for user
  $_Session['username5'] = $user1;
  //Read off the session stored variable
  echo $_Session['username5'];

}
} else {
echo 'That shit didnt work';
}

// rest of page . . 
if ($_Session['username5']) {
header( 'Location: https://localhost/avesi/login_success.php' ) ;
}else{
echo "Login Failed!";
}

mysqli_close($con);
?>

Login_success.php（这是我收到错误的地方 - 注意：未定义的变量：第10行的C：\ xampp \ htdocs \ avesi \ login_success.php中的_Session）

<?php
session_start();
echo time();
if (!empty($_SESSION['username5'])) {
echo "Not empty";
}else{
echo "Empty";
}

echo $_Session['username5'];
?>

在checklogin.php上，它返回$ _Session [＆＃39; username5＆＃39;]的echo中的用户名，因此我知道会话已设置。

在Login_success上，我得到＆＃34;空＆＃34;来自echo，来自echo $ _Session [＆＃39; username5＆＃39;]的错误;就像它根本不再存在一样。

这两个页面都引用了session_start（），所以我不确定问题是什么。我对PHP很陌生，所以任何帮助都会受到赞赏！

Answer 1

PHP区分大小写，快速修复会将所有会话实例都设置为CAPS。

像这样$ _SESSION [＆＃39; username5＆＃39;];

注意：未定义的变量：_Session

1 个答案: