public static function get_user_by_username($username, $fields = '*', $mnethostid = null, $strictness = IGNORE_MISSING) {
        global $DB, $CFG;

        // Because we use the username as the search criteria, we must also restrict our search based on mnet host.
        if (empty($mnethostid)) {
            // If empty, we restrict to local users.
            $mnethostid = $CFG->mnet_localhost_id;
        }

        return $DB->get_record('user', array('username' => $username, 'mnethostid' => $mnethostid), $fields, $strictness);
    }
public static function get_user_by_username($username, $fields = '*', $mnethostid = null, $strictness = IGNORE_MISSING) {
        global $DB, $CFG;

        // Because we use the username as the search criteria, we must also restrict our search based on mnet host.
        if (empty($mnethostid)) {
            // If empty, we restrict to local users.
            $mnethostid = $CFG->mnet_localhost_id;
        }

        return $DB->get_record('user', array('username' => $username, 'mnethostid' => $mnethostid), $fields, $strictness);
    }
public static function get_user_by_username ( $ username , $ fields = '*' , $ mnethostid = null , $ strictness = IGNORE_MISSING ) { global $ DB , $ CFG ; // Because we use the username as the search criteria, we must also restrict our search based on mnet host. if ( empty ( $ mnethostid ) ) { // If empty, we restrict to local users. $ mnethostid = $ CFG -> mnet_localhost_id ; } return $ DB -> get_record ( 'user' , array ( 'username' => $ username , 'mnethostid' => $ mnethostid ) , $ fields , $ strictness ) ; }
Return user object from db based on their username.

@param string $username The username of the user searched.
@param string $fields A comma separated list of user fields to be returned, support and noreply user.
@param int $mnethostid The id of the remote host.
@param int $strictness IGNORE_MISSING means compatible mode, false returned if user not found, debug message if more found;
IGNORE_MULTIPLE means return first user, ignore multiple user records found(not recommended);
MUST_EXIST means throw an exception if no user record or multiple records found.
@return stdClass|bool user record if found, else false.
@throws dml_exception if user record not found and respective $strictness is set.
Return user object from db based on their username .