yaz_wait() returns when all servers have either
completed all requests or aborted (in case of errors).
Список параметров
options
An associative array of options:
timeout
Sets timeout in seconds. If a server has not responded within the
timeout it is considered dead and yaz_wait()
returns. The default value for timeout is 15 seconds.
event
A boolean.
Возвращаемые значения
Возвращает TRUE в случае успешного завершения или FALSE в случае возникновения ошибки.
In event mode, returns resource or FALSE in case of an error.