YAZ
PHP Manual

yaz_errno

(PHP 4 >= 4.0.1, PECL yaz:0.9-1.0.9)

yaz_errno — Returns error number

Description

int yaz_errno ( int $id )

Returns error for target (last request). A positive value is returned if the target returned a diagnostic code; a value of zero is returned if no errors occurred (success); negative value is returned for other errors targets didn't indicate the error in question.

yaz_errno() should be called after network activity for each target - (after yaz_wait() returns) to determine the success or failure of the last operation (e.g. search).


YAZ
PHP Manual