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>
1 answer
Related questions
Incorrect integer value '' for column 'user_id' at row 1 - error
Fatal error: Call to undefined function mysql_query() - PHP
Send email with CC copy and BCC hidden recipients - PHP
Error: Illegal parameter data types INT and row for operation '='
The product key is not valid - error when activating Office
Get date of tomorrow, day after, yesterday, day before - PHP
How to remove / replace multiple <br /> line breaks in PHP ?
Examples of difference between == and === , != and !== in PHP
At sign @ or Exclamation mark ! before PHP function - meaning
How to detect in PHP what web browser are visitors using ?
Trending questions
Man Month calculation - how many man days or man hours ? How to calculate inverse currency exchange rate ? Is PLS LCD display good ? Difference between PLS LCD and Amoled How to add side by side rows in excel pivot table ? Remove or hide bottom navigation bar with buttons on Android How to change QWERTZ keyboard to QWERTY in Windows 10 ? Samsung Galaxy A & F better than M series ? What's the difference ? How do I know I have phone with Android Go ? How to check ? What is definition of ROA, ROI, ROE, ROS, EBITDA in finance ? Free email accounts with large or unlimited storage capacity
Man Month calculation - how many man days or man hours ? How to calculate inverse currency exchange rate ? Is PLS LCD display good ? Difference between PLS LCD and Amoled How to add side by side rows in excel pivot table ? Remove or hide bottom navigation bar with buttons on Android How to change QWERTZ keyboard to QWERTY in Windows 10 ? Samsung Galaxy A & F better than M series ? What's the difference ? How do I know I have phone with Android Go ? How to check ? What is definition of ROA, ROI, ROE, ROS, EBITDA in finance ? Free email accounts with large or unlimited storage capacity
2024 AnswerTabsTermsContact us