(PHP 4 >= 4.0.1, PECL yaz >= 0.9.0)
yaz_error — Returns error description
yaz_error() returns an English text message corresponding to the last error number as returned by yaz_errno().
The connection resource returned by yaz_connect().
Returns an error text message for server (last request), identified by parameter
id. An empty string is returned if the last operation was successful.