yaz_sort
(PHP 4 >= 4.0.7, PECL yaz:0.9-1.0.9)
yaz_sort — Sets sorting criteria
Beschreibung
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
Es wird kein Wert zurückgegeben.
Beispiele
Example#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