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>ibase_blob_get</H1
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><P
> (PHP 3 >= 3.0.7, PHP 4, PHP 5)</P
>ibase_blob_get --
Get len bytes data from open blob
</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN56711"
></A
><H2
>Description</H2
>string <B
CLASS="methodname"
>ibase_blob_get</B
> ( resource blob_handle, int len )<BR
></BR
><P
> This function returns at most <CODE
CLASS="parameter"
>len</CODE
> bytes from a BLOB
that has been opened for reading by <A
HREF="function.ibase-blob-open.html"
><B
CLASS="function"
>ibase_blob_open()</B
></A
>.
Returns <TT
CLASS="constant"
><B
>FALSE</B
></TT
> on failure.
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><code><font color="#000000">
<font color="#0000BB"><?php<br /> $sql </font><font color="#007700">= </font><font color="#DD0000">"SELECT blob_value FROM table"</font><font color="#007700">;<br /> </font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">ibase_query</font><font color="#007700">(</font><font color="#0000BB">$sql</font><font color="#007700">);<br /> </font><font color="#0000BB">$data </font><font color="#007700">= </font><font color="#0000BB">ibase_fetch_object</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br /> </font><font color="#0000BB">$blob_data </font><font color="#007700">= </font><font color="#0000BB">ibase_blob_info</font><font color="#007700">(</font><font color="#0000BB">$data</font><font color="#007700">-></font><font color="#0000BB">BLOB_VALUE</font><font color="#007700">);<br /> </font><font color="#0000BB">$blob_hndl </font><font color="#007700">= </font><font color="#0000BB">ibase_blob_open</font><font color="#007700">(</font><font color="#0000BB">$data</font><font color="#007700">-></font><font color="#0000BB">BLOB_VALUE</font><font color="#007700">);<br /> echo </font><font color="#0000BB">ibase_blob_get</font><font color="#007700">(</font><font color="#0000BB">$blob_hndl</font><font color="#007700">, </font><font color="#0000BB">$blob_data</font><font color="#007700">[</font><font color="#0000BB">0</font><font color="#007700">]);<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
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></P
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>
Whilst this example doesn't do much more than a 'ibase_blob_echo($data->BLOB_VALUE)' would do,
it does show you how to get information into a $variable to manipulate as you please.
</P
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CLASS="note"
><P
><B
>注意: </B
>
It is not possible to read from a BLOB that has been opened for writing
by <A
HREF="function.ibase-blob-create.html"
><B
CLASS="function"
>ibase_blob_create()</B
></A
>.
</P
></BLOCKQUOTE
></DIV
><P
> See also
<A
HREF="function.ibase-blob-open.html"
><B
CLASS="function"
>ibase_blob_open()</B
></A
>,
<A
HREF="function.ibase-blob-close.html"
><B
CLASS="function"
>ibase_blob_close()</B
></A
> and
<A
HREF="function.ibase-blob-echo.html"
><B
CLASS="function"
>ibase_blob_echo()</B
></A
>.
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