Sophie: php-manual-zh-5.2.4-1mdv2008.1 noarch

php-manual-zh-5.2.4-1mdv2008.1.noarch.rpm

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><H1
><A
NAME="function.sesam-seek-row"
></A
>sesam_seek_row</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN207229"
></A
><P
>    (PHP 3 CVS only)</P
>sesam_seek_row&nbsp;--&nbsp;Set scrollable cursor mode for subsequent fetches</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN207232"
></A
><H2
>说明</H2
>bool <B
CLASS="methodname"
>sesam_seek_row</B
> ( string result_id, int whence [, int offset] )<BR
></BR
><P
>&#13;   Sets the scrollable cursor mode for subsequent fetches.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN207247"
></A
><H2
>参数</H2
><P
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>result_id</CODE
></DT
><DD
><P
>&#13;       <CODE
CLASS="parameter"
>result_id</CODE
> is a valid result id (select
       type queries only, and only if a "scrollable" cursor was
       requested when calling <A
HREF="function.sesam-query.html"
><B
CLASS="function"
>sesam_query()</B
></A
>).
      </P
></DD
><DT
><CODE
CLASS="parameter"
>whence</CODE
></DT
><DD
><P
>&#13;       <CODE
CLASS="parameter"
>whence</CODE
> sets the global default value for the
       scrolling type, it specifies the scroll type to use in subsequent
       fetch operations on "scrollable" cursors, which can be set to the
       following predefined constants:
       <DIV
CLASS="table"
><A
NAME="AEN207264"
></A
><P
><B
>表 1. Valid values for <CODE
CLASS="parameter"
>whence</CODE
></B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><THEAD
><TR
><TH
>Value</TH
><TH
>Constant</TH
><TH
>Meaning</TH
></TR
></THEAD
><TBODY
><TR
><TD
>0</TD
><TD
><TT
CLASS="constant"
><B
>SESAM_SEEK_NEXT</B
></TT
></TD
><TD
>read sequentially
          </TD
></TR
><TR
><TD
>1</TD
><TD
><TT
CLASS="constant"
><B
>SESAM_SEEK_PRIOR</B
></TT
></TD
><TD
>read sequentially backwards
           </TD
></TR
><TR
><TD
>2</TD
><TD
><TT
CLASS="constant"
><B
>SESAM_SEEK_FIRST</B
></TT
></TD
><TD
>&#13;            fetch first row (after fetch, the default is set to
            <TT
CLASS="constant"
><B
>SESAM_SEEK_NEXT</B
></TT
>)
           </TD
></TR
><TR
><TD
>3</TD
><TD
><TT
CLASS="constant"
><B
>SESAM_SEEK_LAST</B
></TT
></TD
><TD
>&#13;            fetch last row (after fetch, the default is set to
            <TT
CLASS="constant"
><B
>SESAM_SEEK_PRIOR</B
></TT
>)
           </TD
></TR
><TR
><TD
>4</TD
><TD
><TT
CLASS="constant"
><B
>SESAM_SEEK_ABSOLUTE</B
></TT
></TD
><TD
>&#13;            fetch absolute row number given as
            <CODE
CLASS="parameter"
>offset</CODE
> (Zero-based. After fetch, the
            default is set to <TT
CLASS="constant"
><B
>SESAM_SEEK_ABSOLUTE</B
></TT
>,
            and the offset value is auto-incremented)
           </TD
></TR
><TR
><TD
>5</TD
><TD
><TT
CLASS="constant"
><B
>SESAM_SEEK_RELATIVE</B
></TT
></TD
><TD
>&#13;            fetch relative to current scroll position, where
            <CODE
CLASS="parameter"
>offset</CODE
> can be a positive or negative
            offset value (this also sets the default "offset" value for
            subsequent fetches).
           </TD
></TR
></TBODY
></TABLE
></DIV
>
      </P
></DD
><DT
><CODE
CLASS="parameter"
>offset</CODE
></DT
><DD
><P
>&#13;       An optional parameter which is only evaluated (and required) if
       <CODE
CLASS="parameter"
>whence</CODE
> is either
       <TT
CLASS="constant"
><B
>SESAM_SEEK_RELATIVE</B
></TT
> or
       <TT
CLASS="constant"
><B
>SESAM_SEEK_ABSOLUTE</B
></TT
>.
      </P
></DD
></DL
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN207317"
></A
><H2
>返回值</H2
><P
>&#13;   如果成功则返回 <TT
CLASS="constant"
><B
>TRUE</B
></TT
>，失败则返回 <TT
CLASS="constant"
><B
>FALSE</B
></TT
>。
  </P
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