I figured out the issue. In my plugin I was calling an echo statement from a WP_Head function. This was causing the <head> tag to be immediately closed and rendered in the body. Any remaining code for the WP_Head was being output in the body, including the favicon <link> tags.
You are missing the path parameter. Try setcookie( ‘panier’, $cookie_user_id, time() + DAY_IN_SECONDS, “https://wordpress.stackexchange.com/”); Also, don’t put the callback function in a conditional, put the conditional statement inside the function.
Why do you think you can only hook into init via Plugin, rather than via the Theme? The setup_theme hook, which fires when the Theme is setup, fires before the init hook. Thus, a Theme is perfectly capable of hooking into init.
If you want to see which cookies are loaded with your WordPress install, you can see it in your browser. The number of cookies differs by the number of used plugins, actions on the site, host etc. IE for Google Chrome: rightclick on the site and choose Inspect Element. Click the resources tab and view … Read more
With honor to @Wyck’s link, I managed to add a language variable by adding an action hook to init and set the locale into cookie using PHP’s setcookie() function. For details, visit: Setting custom cookies in WordPress
You can do this as we do in PHP. You can set cookie following way. setcookie( ‘cookie-name’, ‘cookie-value’, ‘cookie-expiration-time’, ‘cookie-path’, ‘cookie-domain’, false ); For referral url, I made following code that you can use to set a cookie with name my-referral-cookie and time() + 3600 (1 hour from current time) is expiration time for cookie. … Read more
There is no best practice here, and to be really honest, cookies are your best (and probably only) option here. The issue with visitors are that they are only visitors. If they were first time signup members and you would want to show something to them only once when they are done registering, the best … Read more
Try hooking on the get_header action hook. That’s the last action hook before headers are output.
No it won’t. If the domain name is still the same then cookies issued by WP will still be passed back and forth between browser and server.
WordPress doesn’t know if it’s a page yet, init fires before the query is run. You need to hook a later action, like wp. Have a look at Action Reference to see the order of actions during a request.