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>yaz_sort</H1
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NAME="AEN81845"
></A
><P
> (PHP 4 >= 4.1.0)</P
>yaz_sort -- Sets sorting criteria</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN81848"
></A
><H2
>Description</H2
>int <B
CLASS="methodname"
>yaz_sort</B
> ( resource id, string criteria)<BR
></BR
><P
> This function sets sorting criteria and enables Z39.50 Sort.
Call this function <SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>before</I
></SPAN
>
<A
HREF="function.yaz-search.html"
><B
CLASS="function"
>yaz_search()</B
></A
>.
Using this function alone doesn't have any effect.
When in conjunction with <A
HREF="function.yaz-search.html"
><B
CLASS="function"
>yaz_search()</B
></A
>,
a Z39.50 Sort will be sent after
a search response has been received and before any records are
retrieved with Z39.50 Present. The <TT
CLASS="parameter"
><I
>criteria</I
></TT
>
takes the form
</P
><P
> <TT
CLASS="replaceable"
><I
>field1 flags1 field2 flags2</I
></TT
> ...
</P
><P
> where field1 specifies primary attributes for sort, field2 seconds,
etc.. The field specifies either numerical attribute combinations consisting
of type=value pairs separated by comma (e.g. <TT
CLASS="literal"
>1=4,2=1</TT
>)
; or the field may specify a plain string criteria
(e.g. <TT
CLASS="literal"
>title</TT
>. The flags is a sequnce of the
following characters which may not be separated by any white space.
</P
><P
></P
><DIV
CLASS="variablelist"
><P
><B
>Sort Flags</B
></P
><DL
><DT
><TT
CLASS="literal"
>a</TT
></DT
><DD
><P
>Sort ascending</P
></DD
><DT
><TT
CLASS="literal"
>d</TT
></DT
><DD
><P
>Sort descending</P
></DD
><DT
><TT
CLASS="literal"
>i</TT
></DT
><DD
><P
>Case insensitive sorting</P
></DD
><DT
><TT
CLASS="literal"
>s</TT
></DT
><DD
><P
>Case sensitive sorting</P
></DD
></DL
></DIV
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><DIV
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><A
NAME="AEN81891"
></A
><P
><B
>Ejemplo 1. Sort Criterias</B
></P
><P
> To sort on Bib1 attribute title, case insensitive,
and ascending you'd use the following sort criteria:
<TABLE
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><TR
><TD
><PRE
CLASS="screen"
>1=4 ia</PRE
></TD
></TR
></TABLE
>
</P
><P
> If the secondary sorting criteria should be author, case sensitive
and ascending you'd use:
<TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>1=4 ia 1=1003 sa</PRE
></TD
></TR
></TABLE
>
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