header中（）在PHP中不重定向 [英] header() in php is not redirecting

问题描述

我有一个有表格的登录页面。登录数据被发送到php脚本中以检查用户是否存在于数据库中。

 ><？php 
 
 $ host =localhost：8889; //主机名称
 $ username =root; // Mysql用户名
 $ password =root; // Mysql密码
 $ db_name =TableName; //数据库名称
 $ tbl_name =用户; //表名
 
 //连接服务器并选择databse。 
 mysql_connect（$ host，$ username，$ password）或die（无法连接）; 
 mysql_select_db（$ db_name）或死（无法选择DB）; 
 
 //从表单发送的用户名和密码
 $ myusername = $ _ POST ['myusername']; 
 $ mypassword = $ _ POST ['mypassword']; 
 
 //保护MySQL注入（关于MySQL注入的更多细节）
 $ myusername = stripslashes（$ myusername）; 
 $ mypassword = stripslashes（$ mypassword）; 
 $ myusername = mysql_real_escape_string（$ myusername）; 
 $ mypassword = mysql_real_escape_string（$ mypassword）; 
 
 
 $ sql =SELECT * FROM $ tbl_name WHERE username ='$ myusername'and password ='$ mypassword'; 
 $ result = mysql_query（$ sql）; 
 
 // Mysql_num_row正在计数表行
 $ count = mysql_num_rows（$ result）; 
 
 //如果结果匹配$ myusername和$ mypassword，则表格行必须为1行
 
 if（$ count == 1）{
 // Register $ myusername，$ mypassword并重定向到文件
 session_register（myusername）; 
 session_register（mypassword）; 
 header（location：../ main.php）; 
 die（）; 
} 
 else {
 echo错误的用户名或密码; 
} 
？> 
  

计数为1，但重定向不会发生。

我已阅读这个很好的答案并检查了以下内容：

1. 在开始标记之前没有空白空间，也没有其他回显或打印。
   
2. i尝试打开php标记后放置 ob_start ，但它也不起作用。

我不明白BOM的含义。你能帮助我吗？

我过去一直使用完全相同的代码，它的工作原理现在我在mamp和mac上不起作用。 / p>

谢谢。

编辑：

在修复这些事情并启用报告后，人们说了些什么，问题是：

 调用未定义的sesion_register。 
  

所以，我改变了它，因为它没有被定义，并且它被弃用，它现在起作用了！谢谢大家！

解决方案

试试这个：

  header（Location：http：// localhost：8889 / main.php）; 
  

位置应该有一个大写L，并且尝试使用绝对URI总是很好的。

编辑

此链接在你的php.ini中检查是否启用了 output_buffering 是一个好主意。然后分别在文件的顶部和底部放置 ob_start（）和 ob_end_flush（）。

I am having a login page which has a form. The login data are send into a php script to check whether the user exists in the DB. If successful, it should redirect.

Here is my code:

<?php

$host="localhost:8889"; // Host name
$username="root"; // Mysql username
$password="root"; // Mysql password
$db_name="TableName"; // Database name
$tbl_name="Users"; // Table name

// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

// username and password sent from form
$myusername=$_POST['myusername'];
$mypassword=$_POST['mypassword'];

// To protect MySQL injection (more detail about MySQL injection)
$myusername = stripslashes($myusername);
$mypassword = stripslashes($mypassword);
$myusername = mysql_real_escape_string($myusername);
$mypassword = mysql_real_escape_string($mypassword);


$sql="SELECT * FROM $tbl_name WHERE username='$myusername' and password='$mypassword'";
$result=mysql_query($sql);

// Mysql_num_row is counting table row
$count=mysql_num_rows($result);

// If result matched $myusername and $mypassword, table row must be 1 row

if($count==1){
// Register $myusername, $mypassword and redirect to file
  session_register("myusername");
  session_register("mypassword");
  header("location:../main.php");
  die();
}
else {
  echo "Wrong Username or Password";
}
?>

Count is 1, but redirection does not happen.

I have read this great answer and checked the following:

1. there is not empty space before the opening tag, nor I am having another echo or print.
2. i tried after the opening php tag to put ob_start but it didn't work either.

I didn't understand the thing with BOM. Can you help me on that?

I have been using the exact same code in the past and it worked and now that I am on mamp and mac does not work.

Thanks.

EDIT:

I did what people have said and after fixing these things and enabling reports, and the problem is that:

Call to undefined sesion_register.

So, I changed that as it is not defined nor and it is deprecated and it works now! Thanks all!

解决方案

Try this:

header("Location: http://localhost:8889/main.php");

Location should have a capital L, and it's always good to try using an absolute URI.

EDIT

After reading this link it might be a good idea to check that output_buffering is enabled in your php.ini. Then place ob_start() and ob_end_flush() at the top and bottom of your file respectively.

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