how to get context information inside my funcion

by

  • you’re requesting index.php which I guess it’s the homepage; if I call for example is_category() trough your ajax from the category page I’ll get false because the function is being ran on the homepage. Use $_SERVER["REQUEST_URI"] instead (don’t forget to sanitize it)

  • you’re hooking your handler on the init action, which I think runs before the post data is set up. Use a different one, like wp or template_redirect