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php-manual-zh-5.2.4-1mdv2008.1.noarch.rpm

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>mysqli_fetch_assoc</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN138559"
></A
><P
>    (PHP 5)</P
>mysqli_fetch_assoc<P
>    (no version information, might be only in CVS)</P
>mysqli-&#62;fetch_assoc()&nbsp;--&nbsp;Fetch a result row as an associative array</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN138563"
></A
><H2
>说明</H2
><P
>Procedural style:</P
>array <B
CLASS="methodname"
>mysqli_fetch_assoc</B
> ( mysqli_result result )<BR
></BR
><P
>Object oriented style (method):</P
>class <B
CLASS="classname"
>mysqli_result</B
> { <BR
></BR
>array <B
CLASS="methodname"
>fetch_assoc</B
> ( void  )<BR
></BR
>}<P
>&#13;   Returns an associative array that corresponds to the fetched row or <TT
CLASS="constant"
><B
>NULL</B
></TT
>
   if there are no more rows.
  </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>本函数返回的字段名是<SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>区分大小写</I
></SPAN
>的。</P
></BLOCKQUOTE
></DIV
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>本函数对
PHP <TT
CLASS="constant"
><B
>NULL</B
></TT
> 值设定 NULL 字段。</P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN138588"
></A
><H2
>参数</H2
><P
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>&#13;result</CODE
></DT
><DD
><P
>Procedural style only: A result set
identifier returned by <A
HREF="function.mysqli-query.html"
><B
CLASS="function"
>mysqli_query()</B
></A
>, <A
HREF="function.mysqli-store-result.html"
><B
CLASS="function"
>mysqli_store_result()</B
></A
>
or <A
HREF="function.mysqli-use-result.html"
><B
CLASS="function"
>mysqli_use_result()</B
></A
>.</P
></DD
></DL
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN138600"
></A
><H2
>返回值</H2
><P
>&#13;   Returns an associative array of strings representing the fetched row in the result
   set, where each key in the array represents the name of one of the result
   set's columns or <TT
CLASS="constant"
><B
>NULL</B
></TT
> if there are no more rows in resultset.
  </P
><P
>&#13;   If two or more columns of the result have the same field names, the last
   column will take precedence. To access the other column(s) of the same
   name, you either need to access the result with numeric indices by using
   <A
HREF="function.mysqli-fetch-row.html"
><B
CLASS="function"
>mysqli_fetch_row()</B
></A
> or add alias names.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN138606"
></A
><H2
>范例</H2
><TABLE
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><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN138608"
></A
><P
><B
>例 1. Object oriented style</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$mysqli </font><font color="#007700">= new </font><font color="#0000BB">mysqli</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT Name, CountryCode FROM City ORDER by ID DESC LIMIT 50,5"</font><font color="#007700">;<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$mysqli</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#0000BB">$query</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* fetch associative array */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">while (</font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">fetch_assoc</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf </font><font color="#007700">(</font><font color="#DD0000">"%s (%s)\n"</font><font color="#007700">, </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#DD0000">"Name"</font><font color="#007700">], </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#DD0000">"CountryCode"</font><font color="#007700">]);<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* free result set */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">close</font><font color="#007700">();<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">$mysqli</font><font color="#007700">-&gt;</font><font color="#0000BB">close</font><font color="#007700">();<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><A
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></A
><P
><B
>例 2. Procedural style</B
></P
><TABLE
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$link </font><font color="#007700">= </font><font color="#0000BB">mysqli_connect</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"my_user"</font><font color="#007700">, </font><font color="#DD0000">"my_password"</font><font color="#007700">, </font><font color="#DD0000">"world"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">mysqli_connect_errno</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">mysqli_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT Name, CountryCode FROM City ORDER by ID DESC LIMIT 50,5"</font><font color="#007700">;<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">mysqli_query</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">, </font><font color="#0000BB">$query</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* fetch associative array */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#007700">while (</font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">mysqli_fetch_assoc</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">)) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf </font><font color="#007700">(</font><font color="#DD0000">"%s (%s)\n"</font><font color="#007700">, </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#DD0000">"Name"</font><font color="#007700">], </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#DD0000">"CountryCode"</font><font color="#007700">]);<br />&nbsp;&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* free result set */<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">mysqli_free_result</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">mysqli_close</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
><P
>上例将输出：</P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>Pueblo (USA)
Arvada (USA)
Cape Coral (USA)
Green Bay (USA)
Santa Clara (USA)</PRE
></TD
></TR
></TABLE
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN138616"
></A
><H2
>参见</H2
><P
>&#13;   <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.mysqli-fetch-array.html"
><B
CLASS="function"
>mysqli_fetch_array()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.mysqli-fetch-row.html"
><B
CLASS="function"
>mysqli_fetch_row()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.mysqli-fetch-object.html"
><B
CLASS="function"
>mysqli_fetch_object()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.mysqli-query.html"
><B
CLASS="function"
>mysqli_query()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.mysqli-data-seek.html"
><B
CLASS="function"
>mysqli_data_seek()</B
></A
></TD
></TR
></TBODY
></TABLE
><P
></P
>
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