Question

我有一个包含以下

的php文件

用于为新用户收集数据的html文件
用于验证输入数据的php函数
在数据提交之前提醒用户并提示用户的JavaScript代码
在验证过程之后我想将输入数据移动到insert.php以将数据插入数据库。

以下是代码

<?PHP
session_start();

if (!(isset($_SESSION['login_user']) && $_SESSION['login_user'] != '')) {

header ("Location: loginForm.php");

}

$hash;
$salt;

?>


<!DOCTYPE html>

<html>
<head>
<meta charset="UTF-8">
<link rel="stylesheet" type="text/css" href="layout.css">
<script language="javascript" type="text/javascript" src="/templates/myjavascript.js"></script>

<title>Title of the document</title>
<script>
  window.onload=function(){
    document.getElementById("new_user_form").onsubmit=function(){

        if(this.pword.value === this.pword2.value)
           { alert("Are you sure you want to create a new user")
               return true;}
         else{ alert("Paswords must be the same ");
             return false;}
      }
  }

</script>
</head>
<div>
<body>

<section id="content">


<form align="center" class="form" action="create_user.php" method="post" id="new_user_form" name="new_user_form">

<ul>

<li>
<h2>Please Fill The Form</h2>

</li>



<li>
     <label for="username">User Name</label> 
        <input name="username" id="keyword" type="text" placeholder="type first name (required)" required />             

</li>

<li>
     <label for="pword">Password</label>
     <input name="pword" id="pword" type="password" placeholder="########" required />
</li>

<li>
     <label for="pword2">Confirm Password</label>
     <input name="pword2" id="pword2" type="password" placeholder="########" required />
</li>



<p>
          <input type = "reset" class="reset" name="submit"/>
          <input type ="submit" name="submit" value="submit" class="submit" "/>
        </p>    

</section>

</ul>
</form>

</body>
</div>

<?php

 /* php function to check pasword policy 
     The password has to be alphanumeric and special characters minimum 8 and max 16               
                    */                   

function checkpwdPolicy(){

      if($_POST['pword'] === $_POST['pword2']) {

  if(!preg_match('/^(?=.*\d)(?=.*[A-Za-z])[0-9A-Za-z!@#$%]{8,16}$/', $_POST['pword'])) {
  echo '<script> alert(" password requirement not met"); </script>';

} else{

 /* we use the session varible to store the hashed password and username   */
                                                      /
 $_SESSION['pwd'] = password_hash($_POST['pword'], PASSWORD_DEFAULT);
 $_SESSION['username'] = $_POST['username'];

 header ("Location: insert_user_table.php");
  }
} 
  else {echo "passwords do not match  "; }

}

 //tis is used to call the fucntion that checks the password policy                                      

if(isset($_POST['submit']) && isset($_POST['username']) && isset($_POST['pword']) && isset($_POST['pword2']) )
{checkpwdPolicy();}


?>

</html>

当我运行鳕鱼时，我显示以下错误。以下是错误。

问题是如何将数据移动到将数据插入数据库的文件中。

Answer 1

如果你在session start命令之前和header之前放置任何东西或显示任何内容（“location：url”）。它不会起作用。

简单

把“session_start（）;”页面顶部。
不要在标题前显示或使用echo（“Location：url”）;

另一个答案：header location not working in my php code

Answer 2

改变你的

<?PHP

到

<?php

删除前面的空格（如果有的话）

session_start();
//remove this line
if (!(isset($_SESSION['login_user']) && $_SESSION['login_user'] != '')) {
//remove this line
header ("Location: loginForm.php");
//remove this line
}

删除上述代码之间的空格。

或尝试使用此代替您的标题

<script type="text/javascript">
window.location.assign('loginForm.php');
</script>

Answer 3

您需要在开头启动会话以避免此警告消息。

session_start();

无法使用会话变量来存储数据

3 个答案: