Does anybody know what can cause the $_SESSION variable to be cleared?
The session variable is used to keep track of products in the cart.
Everything worked perfect on the development and production server.
Out of a sudden the production server looses the session variable – without any changes updated. The production server is hosted with 1&1.
I added some debug information which prints the contents of GET, POST and SESSION.
Link to the website:
http://niehues-gmbh.de
Any cart button updates the SESSION variable
But any reload and other links delete the SESSION
I do call session_start() at the beginning of index.php which loads all other contents.
I fixed the issue by keeping the HTML / PHP standard.
If I remember right then there were white spaces before a header function which made the page not work correctly.