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>章 45. PDO Driver How-To</TD
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>Constants</A
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><P
><B
>表 45-1. Database and Statement Attributes Table</B
></P
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TITLE="c2"><TBODY
><TR
><TD
> <P
>Attribute</P
>
</TD
><TD
> <P
>Valid value(s)</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_AUTOCOMMIT</P
>
</TD
><TD
> <P
>BOOL</P
>
<P
>TRUE if autocommit is set, FALSE otherwise. </P
>
<P
>dbh->auto_commit contains value. Processed by PDO directly.</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_PREFETCH</P
>
</TD
><TD
> <P
>LONG</P
>
<P
>Value of the prefetch size in drivers that support it.</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_TIMEOUT</P
>
</TD
><TD
> <P
>LONG</P
>
<P
>How long to wait for a db operation before timing out.</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_ERRMODE</P
>
</TD
><TD
> <P
>LONG</P
>
<P
>Processed and handled by PDO</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_SERVER_VERSION</P
>
</TD
><TD
> <P
>STRING</P
>
<P
>The <SPAN
CLASS="QUOTE"
>"human-readable"</SPAN
> string representing the
Server/Version this driver is currently connected to.</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_CLIENT_VERSION</P
>
</TD
><TD
> <P
>STRING</P
>
<P
>The <SPAN
CLASS="QUOTE"
>"human-readable"</SPAN
> string representing the Client/Version this driver supports.</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_SERVER_INFO</P
>
</TD
><TD
> <P
>STRING</P
>
<P
>The <SPAN
CLASS="QUOTE"
>"human-readable"</SPAN
> description of the Server.</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_CONNECTION_STATUS</P
>
</TD
><TD
> <P
>LONG</P
>
<P
>Values not yet defined</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_CASE</P
>
</TD
><TD
> <P
>LONG</P
>
<P
>Processed and handled by PDO.</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_CURSOR_NAME</P
>
</TD
><TD
> <P
>STRING</P
>
<P
> String representing the name for a database cursor for use in
<SPAN
CLASS="QUOTE"
>"where current in <name>"</SPAN
> SQL statements.
</P
>
</TD
></TR
><TR
><TD
> <P
>PDO_ATTR_CURSOR</P
>
</TD
><TD
> <P
>LONG</P
>
<P
></P
><DIV
CLASS="variablelist"
><DL
><DT
>PDO_CURSOR_FWDONLY</DT
><DD
><P
>Forward only cursor</P
></DD
><DT
>PDO_CURSOR_SCROLL</DT
><DD
><P
>Scrollable cursor</P
></DD
></DL
></DIV
>
</TD
></TR
></TBODY
></TABLE
></DIV
><P
> The values for the attributes above are all defined in terms of the Zend
API. The Zend API contains macros that can be used to convert a *zval to a
value. These macros are defined in the Zend header file, zend_API.h in the
Zend directory of your PHP build directory. Some of these attributes can be
used with the statement attribute handlers such as the PDO_ATTR_CURSOR and
PDO_ATTR_CURSOR_NAME. See the statement attribute handling functions for
more information.
</P
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