(PHP 4 >= 4.2.0, PECL yaz >= 0.9.0)
yaz_es_result — Inspects Extended Services Result
This function inspects the last returned Extended Service result from a server. An Extended Service is initiated by either yaz_item_order() or yaz_es().
Returns array with element targetReference
for the reference for the extended service operation (generated
and returned from the server).