wp_set_current_user()
Function: Changes the current user by ID or name.
Source: wp-includes/pluggable.php:27
set_current_user
Action Hook: Fires after the current user is set.
Source: wp-includes/pluggable.php:48
wp_get_current_user()
Function: Retrieves the current user object.
Source: wp-includes/pluggable.php:69
get_userdata()
Function: Retrieves user info by user ID.
Source: wp-includes/pluggable.php:83
get_user_by()
Function: Retrieves user info by a given field.
Source: wp-includes/pluggable.php:101
cache_users()
Function: Retrieves info for user lists to prevent multiple queries by get_userdata() .
Source: wp-includes/pluggable.php:125
wp_mail()
Function: Sends an email, similar to PHP’s mail function.
Source: wp-includes/pluggable.php:174