Question

我有一个登录脚本，用于检查数据库的用户凭据，如果它们正确，则会为它们分配一个会话，然后将它们转发到主屏幕。

出于某种原因，它不会转发，但会很乐意输出应该读取转发代码后出现的文本。

<?php
//require_once('scripts/include.php');
require_once('scripts/includePDO.php');

$error = '';
$form = $_POST['submit'];
$email = $_POST['email'];
$password = $_POST['password'];

if( isset($form) ) {
if( isset($email) && isset($password) && $email !== '' && $password !== '' ) {

$sql = "SELECT * FROM tbl_users WHERE email = :email and password = :password";

$q   = $conn->prepare($sql);
        $q->bindValue(':email',$email,PDO::PARAM_STR);
        $q->bindValue(':password',$password,PDO::PARAM_STR);
        $q->execute();

            $r = $q->fetch(PDO::FETCH_ASSOC);
            if(($r)!=0)

{ //success

$answer = $r['id'];

$_SESSION['logged-in'] = true;
$_SESSION['who'] = $answer;

echo "This text echos no probelm";

//If the login details are entered and they match those in the database, forward to new page.
header('Location: home/');

echo "Even this text will be shown";

exit;

// If information is wrong or missing, provide error message.
} else { echo "Sorry, something hasn't worked. Are you entering all the information correctly?"; }
} 

}

?>

Answer 1

在header语句之前不应该向浏览器发送输出。您将收到已发送的标头错误（如果已启用）

echo "This text echos no probelm";

Answer 2

来自PHP manual

请记住，在任何实际输出之前必须调用header（）通过普通HTML标记，文件中的空行或PHP发送。

echo "This text echos no probelm";
//If the login details are entered and they match those in the database, forward to new page.
header('Location: home/');

删除echo。

Answer 3

您确定启用了error_reporting吗？尝试删除所有echo语句并添加ob_clean（）;就在标题（...）之前

Answer 4

要使代码正常工作，有两种选择：

1）在代码之前添加ob_start()，require_once('scripts/includePDO.php');之前（启用输出缓冲）

或者

2）从代码中删除echo "This text echos no probelm";

为什么我的页面忽略了标题（'Location：home /'）;码？

4 个答案: