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>sqlite_fetch_single</H1
><DIV
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><A
NAME="AEN216987"
></A
><P
> (PHP 5)</P
>sqlite_fetch_single<P
> (no version information, might be only in CVS)</P
>SQLiteResult->fetchSingle<P
> (no version information, might be only in CVS)</P
>SQLiteUnbuffered->fetchSingle -- Fetches the first column of a result set as a string</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN216992"
></A
><H2
>说明</H2
>string <B
CLASS="methodname"
>sqlite_fetch_single</B
> ( resource result [, bool decode_binary] )<BR
></BR
><P
>Object oriented style (method):</P
>class <B
CLASS="classname"
>SQLiteResult</B
> { <BR
></BR
>string <B
CLASS="methodname"
>fetchSingle</B
> ( [bool decode_binary] )<BR
></BR
>}class <B
CLASS="classname"
>SQLiteUnbuffered</B
> { <BR
></BR
>string <B
CLASS="methodname"
>fetchSingle</B
> ( [bool decode_binary] )<BR
></BR
>}<P
> <B
CLASS="function"
>sqlite_fetch_single()</B
> is identical to
<A
HREF="function.sqlite-fetch-array.html"
><B
CLASS="function"
>sqlite_fetch_array()</B
></A
> except that it returns the value
of the first column of the rowset.
</P
><P
> This is the most optimal way to retrieve data when you are only
interested in the values from a single column of data.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN217026"
></A
><H2
>参数</H2
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>result</CODE
></DT
><DD
><P
> The SQLite result resource. This parameter is not required when using
the object-oriented method.
</P
></DD
><DT
><CODE
CLASS="parameter"
>decode_binary</CODE
></DT
><DD
><P
>当 <CODE
CLASS="parameter"
>decode_binary</CODE
>
参数设为 <TT
CLASS="constant"
><B
>TRUE</B
></TT
>（默认值）时，PHP 将解码那些由
<A
HREF="function.sqlite-escape-string.html"
><B
CLASS="function"
>sqlite_escape_string()</B
></A
>
编码的数据。通常应保留此值为其默认值，除非在操作其它支持
sqlite 程序建立的数据库时。</P
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN217043"
></A
><H2
>范例</H2
><P
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></A
><P
><B
>例 1. A <B
CLASS="function"
>sqlite_fetch_single()</B
> example</B
></P
><TABLE
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><code><font color="#000000">
<font color="#0000BB"><?php<br /></font><font color="#007700">if (</font><font color="#0000BB">$dbhandle </font><font color="#007700">= </font><font color="#0000BB">sqlite_open</font><font color="#007700">(</font><font color="#DD0000">'mysqlitedb'</font><font color="#007700">, </font><font color="#0000BB">0666</font><font color="#007700">, </font><font color="#0000BB">$sqliteerror</font><font color="#007700">)) {<br /><br /> </font><font color="#0000BB">$sql </font><font color="#007700">= </font><font color="#DD0000">"SELECT id FROM sometable WHERE id = 42"</font><font color="#007700">;<br /> </font><font color="#0000BB">$res </font><font color="#007700">= </font><font color="#0000BB">sqlite_query</font><font color="#007700">(</font><font color="#0000BB">$dbhandle</font><font color="#007700">, </font><font color="#0000BB">$sql</font><font color="#007700">);<br /><br /> if (</font><font color="#0000BB">sqlite_num_rows</font><font color="#007700">(</font><font color="#0000BB">$res</font><font color="#007700">) > </font><font color="#0000BB">0</font><font color="#007700">) {<br /> echo </font><font color="#0000BB">sqlite_fetch_single</font><font color="#007700">(</font><font color="#0000BB">$res</font><font color="#007700">); </font><font color="#FF8000">// 42<br /> </font><font color="#007700">}<br /> <br /> </font><font color="#0000BB">sqlite_close</font><font color="#007700">(</font><font color="#0000BB">$dbhandle</font><font color="#007700">);<br />}<br /></font><font color="#0000BB">?></font>
</font>
</code></TD
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>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN217050"
></A
><H2
>参见</H2
><P
> <P
></P
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><A
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><B
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>sqlite_fetch_array()</B
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