Question

我不知道为什么在刷新index.php后session_start（）无法正常工作。

index.php页面应该显示“ echo $ _SESSION ['reg_code']; //用户输入的密钥密码，然后刷新此页面”

...但是不要显示出来。

///////////////////////index.php//////////////////////////
 <?php
    session_start();
    if(isset($_POST['reg_code'])){
       if (!empty($_POST['reg_code'])) {
          $_SESSION ['reg_code'] =htmlspecialchars($_POST['reg_code']);
       }
    }

    echo $_SESSION ['reg_code'];
 ?>

<form action="index.php" method="POST"  enctype="multipart/form-data">
    <center>
       please enter your key pass :
       <br>
       <br>
       <input placeholder="type here..." type="text" style="width: 400px; border-right: 8px; text-align: center;" name="reg_code"><br><br>
       <input type="submit" name="submit" value="submit">
    </center>
</form>

Answer 1

请尝试这样。

<?php
    session_start();
    if(isset($_POST['reg_code']) && !empty($_POST['reg_code'])){
        $_SESSION ['reg_code'] =htmlspecialchars($_POST['reg_code']); 
    }

    if(isset($_SESSION ['reg_code']) && !empty($_SESSION ['reg_code'])){
        echo $_SESSION ['reg_code'];
    }


 ?>
<form action="" method="POST"  enctype="multipart/form-data">
  <center>
please enter your key pass :
    <br>
    <br>
    <input placeholder="type here..." type="text" style="width: 400px; border-right: 8px; text-align: center;" name="reg_code"><br><br>
    <input type="submit" name="submit" value="submit">
 </center>
</form>

我希望这会对您有所帮助。谢谢。

Answer 2

我认为您获得的是$ _SESSION ['reg_code'] == null。如果会话不包含任何值，则它将不起作用。只需尝试获取数据$ _POST ['reg_code']是否为空。

经过测试。起作用

<?php
session_start();
if(isset($_POST['reg_code']) && !empty($_POST['reg_code'])){
$_SESSION ['reg_code'] =htmlspecialchars($_POST['reg_code']);
echo $_SESSION ['reg_code'];
}
?>
 <form action="" method="POST"  enctype="multipart/form-data">
<center>
    please enter your key pass :
    <br>
    <br>
    <input placeholder="type here..." type="text" name="reg_code"><br><br>
    <input type="submit" name="submit" value="submit">
</center>
</form>

在我的PHP代码中不起作用session_start（）

2 个答案: