wp-includes/user.php:3786Retrieves the current user object.
WP_UserOne hook fires while _wp_get_current_user() runs, in this order:
function _wp_get_current_user() { global $current_user; if ( ! empty( $current_user ) ) { if ( $current_user instanceof WP_User ) { return $current_user; } // Upgrade stdClass to WP_User. if ( is_object( $current_user ) && isset( $current_user->ID ) ) { $cur_id = $current_user->ID; $current_user = null; wp_set_current_user( $cur_id ); return $current_user; } // $current_user has a junk value. Force to WP_User with ID 0. $current_user = null; wp_set_current_user( 0 ); return $current_user; } if ( defined( 'XMLRPC_REQUEST' ) && XMLRPC_REQUEST ) { wp_set_current_user( 0 ); return $current_user; } /** * Filters the current user. * * The default filters use this to determine the current user from the * request's cookies, if available. * * Returning a value of false will effectively short-circuit setting * the current user. * * @since 3.9.0 * * @param int|false $user_id User ID if one has been determined, false otherwise. */ $user_id = apply_filters( 'determine_current_user', false ); if ( ! $user_id ) { wp_set_current_user( 0 ); return $current_user; } wp_set_current_user( $user_id ); return $current_user;}Introduced in 4.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/user.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.