Apache 2.4.9, Cannot modify header information - headers already sent by

Question

i have php code which was working in Mavericks, then i updated my system to Yosemite, apache 2.4.9 (unix) is installed in yosemite, now when i run my code, i got this error:

Warning: Cannot modify header information - headers already sent by (output started at /Library/WebServer/Documents/odnoklasniki/indexSingle.php:10) in /Library/WebServer/Documents/odnoklasniki/indexSingle.php on line 125

in 125 line, i have this code:

header('Location: http://www.odnoklassniki.ru/oauth/authorize?client_id='.$AUTH['application_key'].'&scope=PHOTO_CONTENT&response_type=code&redirect_uri=http://localhost/odnoklasniki/indexSingle.php');

before it was working in mavericks.

Code:

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <link href="http://www.odnoklassniki.ru/oauth/resources.do?type=css" rel="stylesheet">
</head>
<body>

<?php
    if (statement true) {
        **** // i have some echo's here, i tried by removing them
    } else {
        header('Location: http://www.odnoklassniki.ru/oauth/authorize?client_id='.$AUTH['application_key'].'&scope=PHOTO_CONTENT&response_type=code&redirect_uri=http://localhost/odnoklasniki/indexSingle.php');
    }
?>

</body>
</html>

possible duplicate of [How to fix "Headers already sent" error in PHP](http://stackoverflow.com/questions/8028957/how-to-fix-headers-already-sent-error-in-php) — Cheery, Nov 20 '14 at 06:38

score 1 · Accepted Answer · answered Nov 20 '14 at 06:30

1

You might have used echo or html code before the header(),

Do not use/render any echo or html code before the header(), and if there any thing remove all and try, which will work.

output started at /Library/WebServer/Documents/odnoklasniki/indexSingle.php:10

see this lines and remove the echo/ blank spaces/ html etc.

answered Nov 20 '14 at 06:30

Ashique C M

733
4
8

i have some echo before header(), i tried by removing them, but it does not work again – kakajan Nov 20 '14 at 06:44

score 0 · Answer 2 · answered Nov 20 '14 at 06:30

0

You probably output something before the PHP header command, that's the cause of the error you get. You can use a die(); function before this line and call the page from the browser, you will probably see the output sent before the header() command.

answered Nov 20 '14 at 06:30

Vasilis Lourdas

1,179
1
16
35

Apache 2.4.9, Cannot modify header information - headers already sent by

2 Answers2