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>oci_num_fields</H1
><DIV
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><A
NAME="AEN158852"
></A
><P
> (PHP 5)</P
>oci_num_fields -- 返回结果列的数目</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN158855"
></A
><H2
>说明</H2
>int <B
CLASS="methodname"
>oci_num_fields</B
> ( resource statement )<BR
></BR
><P
> <B
CLASS="function"
>oci_num_fields()</B
> 返回
<CODE
CLASS="parameter"
>statement</CODE
> 中的列的数目。
</P
><P
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><B
>例 1. <B
CLASS="function"
>oci_num_fields()</B
> 例子</B
></P
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><code><font color="#000000">
<font color="#0000BB"><?php<br /> </font><font color="#007700">echo </font><font color="#DD0000">"<pre>\n"</font><font color="#007700">;<br /> </font><font color="#0000BB">$conn </font><font color="#007700">= </font><font color="#0000BB">oci_connect</font><font color="#007700">(</font><font color="#DD0000">"scott"</font><font color="#007700">, </font><font color="#DD0000">"tiger"</font><font color="#007700">);<br /> </font><font color="#0000BB">$stmt </font><font color="#007700">= </font><font color="#0000BB">oci_parse</font><font color="#007700">(</font><font color="#0000BB">$conn</font><font color="#007700">, </font><font color="#DD0000">"select * from emp"</font><font color="#007700">);<br /><br /> </font><font color="#0000BB">oci_execute</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br /><br /> while (</font><font color="#0000BB">oci_fetch</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">)) {<br /> echo </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /> </font><font color="#0000BB">$ncols </font><font color="#007700">= </font><font color="#0000BB">oci_num_fields</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br /> for (</font><font color="#0000BB">$i </font><font color="#007700">= </font><font color="#0000BB">1</font><font color="#007700">; </font><font color="#0000BB">$i </font><font color="#007700"><= </font><font color="#0000BB">$ncols</font><font color="#007700">; </font><font color="#0000BB">$i</font><font color="#007700">++) {<br /> </font><font color="#0000BB">$column_name </font><font color="#007700">= </font><font color="#0000BB">oci_field_name</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">, </font><font color="#0000BB">$i</font><font color="#007700">);<br /> </font><font color="#0000BB">$column_value </font><font color="#007700">= </font><font color="#0000BB">oci_result</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">, </font><font color="#0000BB">$i</font><font color="#007700">);<br /> echo </font><font color="#0000BB">$column_name </font><font color="#007700">. </font><font color="#DD0000">': ' </font><font color="#007700">. </font><font color="#0000BB">$column_value </font><font color="#007700">. </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /> }<br /> echo </font><font color="#DD0000">"\n"</font><font color="#007700">;<br /> }<br /><br /> </font><font color="#0000BB">oci_free_statement</font><font color="#007700">(</font><font color="#0000BB">$stmt</font><font color="#007700">);<br /> </font><font color="#0000BB">oci_close</font><font color="#007700">(</font><font color="#0000BB">$conn</font><font color="#007700">);<br /><br /> echo </font><font color="#DD0000">"</pre>"</font><font color="#007700">;<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
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>
</P
><P
> <B
CLASS="function"
>oci_num_fields()</B
> 在出错时返回 <TT
CLASS="constant"
><B
>FALSE</B
></TT
>。
</P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
在 PHP 5.0.0 之前的版本必须使用 <A
HREF="function.ocinumcols.html"
><B
CLASS="function"
>ocinumcols()</B
></A
>
替代本函数。该函数名仍然可用，为向下兼容作为
<B
CLASS="function"
>oci_num_fields()</B
> 的别名。不过其已被废弃，不推荐使用。
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