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>px_set_blob_file</H1
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><P
> (PECL)</P
>px_set_blob_file -- Sets the file where blobs are read from</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN168065"
></A
><H2
>说明</H2
>bool <B
CLASS="methodname"
>px_set_blob_file</B
> ( resource pxdoc, string filename )<BR
></BR
><P
> Sets the name of the file where blobs are going to be read from or written
into. Without
calling this function, <A
HREF="function.px-get-record.html"
><B
CLASS="function"
>px_get_record()</B
></A
> or
<A
HREF="function.px-retrieve-record.html"
><B
CLASS="function"
>px_retrieve_record()</B
></A
> will only return
data in blob fields if the data is part of the record and not stored in the
blob file. Blob data is stored in the record if it is small enough to fit
in the size of the blob field.</P
><P
> Calling <A
HREF="function.px-put-record.html"
><B
CLASS="function"
>px_put_record()</B
></A
>,
<A
HREF="function.px-insert-record.html"
><B
CLASS="function"
>px_insert_record()</B
></A
>, or
<A
HREF="function.px-update-record.html"
><B
CLASS="function"
>px_update_record()</B
></A
> without calling
<B
CLASS="function"
>px_set_blob_file()</B
> will result in truncated blob fields
unless the data fits into the database file.
</P
><P
> Calling this function twice will close the first blob file and open the new
one.
</P
></DIV
><DIV
CLASS="refsect1"
><A
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></A
><H2
>参数</H2
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>pxdoc</CODE
></DT
><DD
><P
> Resource identifier of the paradox database
as returned by <A
HREF="function.px-new.html"
><B
CLASS="function"
>px_new()</B
></A
>.
</P
></DD
><DT
><CODE
CLASS="parameter"
>filename</CODE
></DT
><DD
><P
> The name of the file. Its extension should be <TT
CLASS="literal"
>.MB</TT
>.
</P
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN168101"
></A
><H2
>返回值</H2
><P
> 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
>。
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