CUser::GetByID is a method used in the Bitrix CMS to retrieve user data based on their ID. It is a PHP function that is part of the Bitrix Framework library.
Here are two examples of using CUser::GetByID:
## Example 1: Retrieve a user's email address
// Assuming the user ID is 42 $user_id = 42; $user = CUser::GetByID($user_id)->Fetch(); $email = $user['EMAIL'];
In this example, we retrieve the user with ID 42 and extract their email address from the returned array.
## Example 2: Check if a user exists
// Assuming the user ID is 99 $user_id = 99; $user = CUser::GetByID($user_id)->Fetch(); if(!$user) { echo "User with ID $user_id does not exist"; }
In this example, we retrieve the user with ID 99, and if no user is returned, we display an error message.
The CUser::GetByID method is part of the Bitrix Framework library, which is a PHP package/library that provides a set of tools and functions for building web applications. Bitrix Framework is a commercial product that is primarily used in Russia and other CIS countries.
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