使用输出缓冲写入后，使用标题功能重定向时遇到问题

Question

我想在5秒钟后重定向用户，此小代码片段在5秒后重定向。

<?php 
    ob_start(); 

    echo "Thank you for your input"; 
    header("Refresh: 5; url=http://www.google.com"); 
    ob_end_flush(); 
    ?> 

但是，当我尝试将它实现到我的应用程序时，什么都不会发生。这里头功能不起作用。

<?php 

$name = ""; 
$email = ""; 
$subject = ""; 
$comments = ""; 
$nameError = ""; 
$emailError = ""; 
$subjectError = ""; 
$timestamp = date("Y-m-d H:i:s"); 
$x = 5; 
$userIP = $_SERVER['REMOTE_ADDR']; 
function filterData($data) { 
$data = mysql_real_escape_string($data); 
return $data; 
} 
$connection = mysql_connect('----', '----', '-----'); 

$select_database = mysql_select_db("contact"); 

if ($_SERVER["REQUEST_METHOD"] == "POST") { 
//handles the name 
$name = filterData($_POST["name"]); 
if (empty($name)) { 
$nameError = "please don't leave the name field blank"; 
} 

//handles the email 
$email = filterData($_POST["email"]); 
if (empty($email)) { 
$emailError = "please don't leave the email field blank"; 
} 

//handles the subject 
$subject = filterData($_POST["subject"]); 
if (empty($subject)) { 
$subjectError = "please don't leave this field blank"; 
} 

$comments = filterData($_POST["comments"]); 

} 

$insertation = "INSERT INTO contactinfo (name, email, subject, date, comments, ip) 
VALUES ('$name', '$email', '$subject', '$timestamp', '$comments', '$userIP')"; 

$insertationQuery = mysql_query($insertation, $connection); 

ob_start(); 

echo "Thank you for your input"; 
header("Refresh: 5; url=http://www.google.com"); 
ob_end_flush(); 

?> 

我已经尝试在开始和结束分别放置ob_start（）和ob_end_flush（）。但是，这似乎仍然不起作用。

Answer 1

header必须在任何回应之前调用。因此请在header之后放置您的echo。

header("Refresh: 5; url=http://www.google.com"); 
echo "Thank you for your input"; 

http://php.net/manual/en/function.header.php#97114