Since the update 27.5 -> Warning: Cannot modify header information - headers already sent
Since the update to 27.5 I have an unpleasant error:
Warning: Cannot modify header information - headers already sent by (output started at .../wp-content/themes/betheme/header.php:9) in .../wp-content/plugins/code-snippets/php/snippet-ops.php(582) : eval()'d code on line 31
I use snippets for my own PHP code. In this line I want to set a cookie with setcookie('my_cookie', $hash, time()+MONTH_IN_SECONDS, '/');
I urgently need help, we have many users, it is almost impossible to import a backup without losing data...
Many thanks
Christian
Comments
Hi,
To be clear. The warning refers to your PHP code, right?
When you remove it, will this warning disappear?
Best regards