In PHP, with systems where a user can login, it is not uncommon for an administrator to be able to impersonate another user for testing purposes. With the above example, if the user is not impersonating another user, and also a logged in user does not exist, then the user will be a guest user instead. Read on more if you don't understand this yet to see what ternaries are and how they are used ...
You said "login" is a noun (correct) but your example ("login screen") shows it being used as an adjective. The single word can be either an adjective or noun, but your answer is inconsistent.
A person who perform login to site. This person: "was login" to site "logined" to site Which version is correct?
Index A page is indexed by Google if it has been visited by the Google crawler ("Googlebot"), analyzed for content and meaning, and stored in the Google index. Indexed pages can be shown in Google Search results (if they follow the Google Search Essentials).
Using INDEX and Match INDEX and MATCH can be used together to perform more advanced and dynamic lookups. Tip: VLOOKUP can be used when the lookup value is to the left of the desired attribute to return. INDEX and MATCH can be used regardless of where the lookup value is located in the dataset.
Sử dụng INDEX và Match Bạn có thể sử dụng INDEX và MATCH cùng lúc để thực hiện các quy trình tra cứu nâng cao và linh hoạt hơn. Mẹo: Bạn có thể dùng hàm VLOOKUP khi giá trị tra cứu nằm ở bên trái của thuộc tính mong muốn trả về.