(PHP 4 >= 4.0.6, PHP 5, PHP 7)
fbsql_change_user — Change logged in user of the active connection
$user
, string $password
[, string $database
[, resource $link_identifier
]] )fbsql_change_user() changes the logged in user of the specified connection. If the new user and password authorization fails, the current connected user stays active.
userThe new user name.
passwordThe new user password.
databaseIf specified, this will be the default or current database after the user has been changed.
link_identifier由 fbsql_connect() 或 fbsql_pconnect() 返回的 FrontBase 链接标识符.
如可选并未指定，函数会尝试查找一个到 FrontBase 服务器的开放链接，且如没有找到这样的链接，会尝试通过不带参数调用 fbsql_connect() 来创建一个。
成功时返回 TRUE， 或者在失败时返回 FALSE。