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(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().
The connection resource returned by yaz_connect().
Returns array with element targetReference for the reference for the extended service operation (generated and returned from the server).