Question

我很困惑，我最近刚刚从本地服务器（Wamp）切换到实时服务器（DreamHost - Shared）。

现在，我的本地服务器工作正常，但在实时服务器上它正在提升Cannot modify header information。这很奇怪，因为那里什么也没发生！我有什么遗失的东西吗？

<!DOCTYPE html>
<html>
<head>
    <?php include("/home/postinowner/postin.me/includes/head.php");?>
    <title> Your Words, Your Thoughts, So Get POSTIN'</title>
    <link type="text/css" rel="stylesheet" href="css/style.home.php.css"/>
</head>
<body>

    <div id="wrapper" class="container">
<?php

//Grabbing the database connection
require("/home/postinowner/postin.me/db_connection.php");

//Starts the session
session_start();

//Grabs the user class
require("/home/postinowner/postin.me/classes.php");

//Grabs all of the categories
require("/home/postinowner/postin.me/allcategories.php");

//Grabs the header
include("/home/postinowner/postin.me/includes/header.php");

?>

然后是head.php文件：

<html lang="en-US">

<link rel="icon" type="image/png" href="http://localhost/postin'/images/favicon.ico?v=2">

<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php mb_internal_encoding("UTF-8"); ?>

<link type="text/css" rel="stylesheet" href="http://localhost/postin'/css/bootstrap.min.css">
<link type="text/css" rel="stylesheet" href="http://localhost/postin'/css/bootstrap-theme.min.css">
<link type="text/css" rel="stylesheet" href="http://localhost/postin'/css/style.css"/>
<link type="text/css" rel="stylesheet" href="http://localhost/postin'/css/style.adboxs.css"/>

<style type="text/css">
<!--
    body {
        margin: 0px;
    }
-->
</style>
<style type="text/css">
    a:hover {color: orange;}     /* mouse over link */
    a:active {color: orange;}    /* selected link */
</style>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"> </script>
<script src="js/bootstrap.min.js"> </script>

<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0/js/bootstrap.min.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>

<script type="text/javascript">
$(function () {
$('[data-toggle="tooltip"]').tooltip()
})
</script>

P.S。，我不想压制错误。

Answer 1

您的session_start()命令应始终位于每个文件的top。此外，如果您的代码中有任何header函数，那么任何和所有echo命令都应该在它之后，而不是之前。

因此，例如： -

<?php
if(1==1)
{
header('Locatio:something.php');//should be immediately after the `if` start braces.
echo "something here";
}
?>

现在，出了点问题： -

<?php
if(1==1)
{
echo "something here";
header('Locatio:something.php');//should be immediately after the `if` start braces.
}
?>

现在上面的代码^^将通过headers already sent error。

＆GT;

<?php
session_start();
require("/home/postinowner/postin.me/db_connection.php");
?>
<!DOCTYPE html>
<html>
<head>
    <?php include("/home/postinowner/postin.me/includes/head.php");?>
    <title> Your Words, Your Thoughts, So Get POSTIN'</title>
    <link type="text/css" rel="stylesheet" href="css/style.home.php.css"/>
</head>
<body>

    <div id="wrapper" class="container">
<?php

//Grabs the user class
require("/home/postinowner/postin.me/classes.php");

//Grabs all of the categories
require("/home/postinowner/postin.me/allcategories.php");

//Grabs the header
include("/home/postinowner/postin.me/includes/header.php");

?>

?>

说＆＃34;标题已经发送＆＃34;，但它还没有

1 个答案: