yaz_sort

PHP Handbuch
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Beschreibung

void yaz_sort ( resource id, string criteria )

This function sets sorting criteria and enables Z39.50 Sort.

Call this function before yaz_search(). Using this function alone does not have any effect. When used in conjunction with yaz_search(), a Z39.50 Sort will be sent after a search response has been received and before any records are retrieved with Z39.50 Present (yaz_present().

Parameter Liste

id

The connection resource returned by yaz_connect().

criteria

A string that takes the form field1 flags1 field2 flags2 where field1 specifies the primary attributes for sort, field2 seconds, etc..

The field specifies either a numerical attribute combinations consisting of type=value pairs separated by comma (e.g. 1=4,2=1) ; or the field may specify a plain string criteria (e.g. title. The flags is a sequence of the following characters which may not be separated by any white space.

Sort Flags

a: Sort ascending
d: Sort descending
i: Case insensitive sorting
s: Case sensitive sorting

Rückgabewerte

No value is returned.

Beispiele

Beispiel 1. Sort Criterias

To sort on Bib1 attribute title, case insensitive, and ascending you would use the following sort criteria:
1=4 ia

If the secondary sorting criteria should be author, case sensitive and ascending you would use:
1=4 ia 1=1003 sa

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