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# yaz_errno

(PHP 4 )

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 (such as when the target closed connection, etc).

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).

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