Says "Header Already Sent", But it hasn't been

Question

I am very confused, I recently just switched from a localserver (Wamp) to a live server (DreamHost - Shared).

Now, my localserver works perfectly, yet on the live server it is raising the Cannot modify header information. That is odd because there is nothing happening there! Is there any thing I am missing?

<!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");

?>

And then the head.php file:

<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., I would NOT like to suppress the error.

if you're not using sessions, drop `session_start();` – Funk Forty Niner Aug 03 '15 at 16:41 — Funk Forty Niner, Aug 03 '15 at 16:41
ah, the big ***why*** ;-) – Funk Forty Niner Aug 03 '15 at 16:44 — Funk Forty Niner, Aug 03 '15 at 16:44

Akshay · Accepted Answer · 2015-08-03T16:48:12.733

4

Your session_start() command should always be at the top of every file. Also, if you have any header functions in your code, then any and all echo commands should follow after it, and not before it.

Therefore, for example :-

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

Now, something which is wrong :-

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

Now the above code ^^ will through headers already sent error.

?>

<?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");

?>

?>

edited Aug 03 '15 at 16:48

answered Aug 03 '15 at 16:40

Akshay

2,244
3
15
34

1

Thank you, this is working. But why? lol – Michael Jones Aug 03 '15 at 16:42
2

Why should the OP "try this"? A good answer will always have an explanation of what was done and why it was done that way, not only for the OP but for future visitors to SO. – Jay Blanchard Aug 03 '15 at 16:43
1

care to enlighten everyone as to why they should try this? as for future visitors to the question; they too would surely like to know ;-) – Funk Forty Niner Aug 03 '15 at 16:43
Just updated the answer :) I wanted to know if it works out for him. @Fred-ii- Just updated my answer. – Akshay Aug 03 '15 at 16:49
1

@Fred-ii- Honestly buddy, you've motivated me to be more active on stackoverflow :) – Akshay Aug 03 '15 at 16:52
1

glad to hear it @Akshay – Funk Forty Niner Aug 03 '15 at 16:58
Hey @Fred-ii- You are always great man... :D – Praveen Kumar Purushothaman Sep 26 '15 at 10:45
1

@PraveenKumar *Grazie!* – Funk Forty Niner Sep 26 '15 at 11:49

Says "Header Already Sent", But it hasn't been

1 Answers1