Fix warning: Headers already sent - setcookie error in PHP
After some modifications on my website, I am receiveing error notification:
Warning: Cannot modify header information - headers already sent by (output started at /www/b/i/u50034/public_html/index.php:965) in /www/b/i/u50034/public_html/index.php on line 1006
I found out that error is caused by setcookie(). In code, everything seems to be correct. Do you know how to fix it and make it work properly ?
Warning: Cannot modify header information - headers already sent by (output started at /www/b/i/u50034/public_html/index.php:965) in /www/b/i/u50034/public_html/index.php on line 1006
I found out that error is caused by setcookie(). In code, everything seems to be correct. Do you know how to fix it and make it work properly ?
Hi,
To fix the error, the setcoookie() function has to be moved before HTML content.
The description of setcookie() function:
Setcookie() defines a cookie to be sent along with the rest of the HTTP headers. Like other headers, cookies must be sent before any output from your script (this is a protocol restriction).
So instead of something like this:
<?php
$cookie_name = "abc";
$cookie_value = "12345";
?>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<?php
setcookie($cookie_name, $cookie_value, time() + 3600, "/");
?>
</body>
</html>
You have to use this:
<?php
$cookie_name = "abc";
$cookie_value = "12345";
setcookie($cookie_name, $cookie_value, time() + 3600, "/");
?>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
</body>
</html>
To fix the error, the setcoookie() function has to be moved before HTML content.
The description of setcookie() function:
Setcookie() defines a cookie to be sent along with the rest of the HTTP headers. Like other headers, cookies must be sent before any output from your script (this is a protocol restriction).
So instead of something like this:
<?php
$cookie_name = "abc";
$cookie_value = "12345";
?>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<?php
setcookie($cookie_name, $cookie_value, time() + 3600, "/");
?>
</body>
</html>
You have to use this:
<?php
$cookie_name = "abc";
$cookie_value = "12345";
setcookie($cookie_name, $cookie_value, time() + 3600, "/");
?>
<!DOCTYPE html>
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
</body>
</html>
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