PHP

Check if an item is exist in session laravel

if ($request->session()->has('users')) 
  
//The has method returns true if the item is present and is not null:  

Check if an item is exist in session laravel

if ($request->session()->exists('users'))

//To determine if an item is present in the session, even if its value is null, you may use the exists method

Laravel To determine if an item is not present in the session

if ($request->session()->missing('users'))