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

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>maxdb_fetch_assoc</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN110566"
></A
><P
>    (PECL)</P
>maxdb_fetch_assoc<P
>    (no version information, might be only in CVS)</P
>maxdb-&#62;fetch_assoc&nbsp;--&nbsp;Fetch a result row as an associative array</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN110570"
></A
><H2
>Description</H2
><P
>Procedural style:</P
>array <B
CLASS="methodname"
>maxdb_fetch_assoc</B
> ( resource result )<BR
></BR
><P
>Object oriented style (method):</P
>class <B
CLASS="classname"
>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
><P
>&#13;   The <B
CLASS="function"
>maxdb_fetch_assoc()</B
> function is used to return an associative array
   representing the next row in the result set for the result represented by the
   <CODE
CLASS="parameter"
>result</CODE
> parameter, where each key in the array represents the name
   of one of the result set's columns.
  </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.maxdb-fetch-row.html"
><B
CLASS="function"
>maxdb_fetch_row()</B
></A
> or add alias names.
  </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="AEN110600"
></A
><H2
>Return values</H2
><P
>&#13;   Returns an array that corresponds to the fetched row or <TT
CLASS="constant"
><B
>NULL</B
></TT
> if there are no more rows in resultset.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN110604"
></A
><H2
>See also</H2
><P
>&#13;   <A
HREF="function.maxdb-fetch-array.html"
><B
CLASS="function"
>maxdb_fetch_array()</B
></A
>,
   <A
HREF="function.maxdb-fetch-row.html"
><B
CLASS="function"
>maxdb_fetch_row()</B
></A
>,
   <B
CLASS="function"
>maxdb_fetch_resource()</B
>.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN110610"
></A
><H2
>Example</H2
><TABLE
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BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN110612"
></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 />$maxdb </font><font color="#007700">= new </font><font color="#0000BB">maxdb</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"MONA"</font><font color="#007700">, </font><font color="#DD0000">"RED"</font><font color="#007700">, </font><font color="#DD0000">"DEMODB"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">maxdb_connect_errno</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf</font><font color="#007700">(</font><font color="#DD0000">"Connect failed: %s\n"</font><font color="#007700">, </font><font color="#0000BB">maxdb_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT name, state FROM hotel.city ORDER by zip"</font><font color="#007700">;<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">$maxdb</font><font color="#007700">-&gt;</font><font color="#0000BB">query</font><font color="#007700">(</font><font color="#0000BB">$query</font><font color="#007700">)) {<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* fetch associative array */<br />&nbsp;&nbsp;&nbsp;</font><font color="#007700">while (</font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">$result</font><font color="#007700">-&gt;</font><font color="#0000BB">fetch_assoc</font><font color="#007700">()) {<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">printf </font><font color="#007700">(</font><font color="#DD0000">"%s (%s)\n"</font><font color="#007700">, </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#DD0000">"NAME"</font><font color="#007700">], </font><font color="#0000BB">$row</font><font color="#007700">[</font><font color="#DD0000">"STATE"</font><font color="#007700">]);<br />&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* free result set */<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">$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">$maxdb</font><font color="#007700">-&gt;</font><font color="#0000BB">close</font><font color="#007700">();<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN110615"
></A
><P
><B
>例 2. Procedural style</B
></P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$link </font><font color="#007700">= </font><font color="#0000BB">maxdb_connect</font><font color="#007700">(</font><font color="#DD0000">"localhost"</font><font color="#007700">, </font><font color="#DD0000">"MONA"</font><font color="#007700">, </font><font color="#DD0000">"RED"</font><font color="#007700">, </font><font color="#DD0000">"DEMODB"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* check connection */<br /></font><font color="#007700">if (</font><font color="#0000BB">maxdb_connect_errno</font><font color="#007700">()) {<br />&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">maxdb_connect_error</font><font color="#007700">());<br />&nbsp;&nbsp;&nbsp;exit();<br />}<br /><br /></font><font color="#0000BB">$query </font><font color="#007700">= </font><font color="#DD0000">"SELECT name, state FROM hotel.city ORDER by zip"</font><font color="#007700">;<br /><br />if (</font><font color="#0000BB">$result </font><font color="#007700">= </font><font color="#0000BB">maxdb_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;</font><font color="#FF8000">/* fetch associative array */<br />&nbsp;&nbsp;&nbsp;</font><font color="#007700">while (</font><font color="#0000BB">$row </font><font color="#007700">= </font><font color="#0000BB">maxdb_fetch_assoc</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">)) {<br />&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">"STATE"</font><font color="#007700">]);<br />&nbsp;&nbsp;&nbsp;}<br /><br />&nbsp;&nbsp;&nbsp;</font><font color="#FF8000">/* free result set */<br />&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">maxdb_free_result</font><font color="#007700">(</font><font color="#0000BB">$result</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">/* close connection */<br /></font><font color="#0000BB">maxdb_close</font><font color="#007700">(</font><font color="#0000BB">$link</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
><P
>&#13;   The above examples would produce the following output:
  </P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>New York (NY)
New York (NY)
Long Island (NY)
Albany (NY)
Washington (DC)
Washington (DC)
Washington (DC)
Silver Spring (MD)
Daytona Beach (FL)
Deerfield Beach (FL)
Clearwater (FL)
Cincinnati (OH)
Detroit (MI)
Rosemont (IL)
Chicago (IL)
Chicago (IL)
New Orleans (LA)
Dallas (TX)
Los Angeles (CA)
Hollywood (CA)
Long Beach (CA)
Palm Springs (CA)
Irvine (CA)
Santa Clara (CA)
Portland (OR)</PRE
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