here is my problem:
I successfully wrote a cookie. Then I check for this cookie with Java Script and PHP code. But only Java Script returns me "found".
When I put this PHP code into test.php and I upload it manually to my site - PHP script shows "found". But when I try to insert the code into header.php or any other PHP file of my WP theme - it shows "not found".
I tested this PHP code with 2 other sites with different themes and WP versions, but no change.