yaz_sort
(PHP 4 >= 4.0.7, PECL yaz >= 0.9.0)
yaz_sort — Sets sorting criteria
Description
$id, string $criteria): voidThis 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().
Parameters
-
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
-
Return Values
No value is returned.
Examples
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
