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

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><DIV
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><H1
CLASS="title"
>CLXXIV. WDDX Functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN238224"
></A
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="wddx.intro"
>简介</A
></H1
><P
>&#13;     These functions are intended for work with <A
HREF="http://www.openwddx.org/"
TARGET="_top"
>WDDX</A
>.
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="wddx.requirements"
>需求</A
></H1
><P
>&#13;     In order to use WDDX, you will need to install the expat library
     (which comes with Apache 1.3.7 or higher).
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="wddx.installation"
>安装</A
></H1
><P
>&#13;  After installing expat compile PHP with
  <CODE
CLASS="option"
>--enable-wddx</CODE
>.
 </P
><P
> <TT
CLASS="literal"
>PHP</TT
> 的 Windows
版本已经内置该扩展模块的支持。无需加载任何附加扩展库即可使用这些函数。</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="wddx.configuration"
>运行时配置</A
></H1
><P
>本扩展模块在 <TT
CLASS="filename"
>php.ini</TT
> 中未定义任何配置选项。</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="wddx.resources"
>资源类型</A
></H1
><P
>&#13;     This extension defines a WDDX packet identifier returned by
     <A
HREF="function.wddx-packet-start.html"
><B
CLASS="function"
>wddx_packet_start()</B
></A
>.
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="wddx.constants"
>预定义常量</A
></H1
><P
>本扩展模块未定义任何常量。</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="wddx.examples"
>范例</A
></H1
><P
>&#13;     All the functions that serialize variables use the first
     element of an array to determine whether the array is to be
     serialized into an array or structure. If the first element has
     string key, then it is serialized into a structure, otherwise,
     into an array.
    </P
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN238252"
></A
><P
><B
>例 1. Serializing a single value with WDDX</B
></P
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#007700">echo </font><font color="#0000BB">wddx_serialize_value</font><font color="#007700">(</font><font color="#DD0000">"PHP to WDDX packet example"</font><font color="#007700">, </font><font color="#DD0000">"PHP packet"</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;      This example will produce:
     </P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>&#60;wddxPacket version='1.0'&#62;&#60;header comment='PHP packet'/&#62;&#60;data&#62;
&#60;string&#62;PHP to WDDX packet example&#60;/string&#62;&#60;/data&#62;&#60;/wddxPacket&#62;</PRE
></TD
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></TD
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BORDER="0"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN238257"
></A
><P
><B
>例 2. Using incremental packets with WDDX</B
></P
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$pi </font><font color="#007700">= </font><font color="#0000BB">3.1415926</font><font color="#007700">;<br /></font><font color="#0000BB">$packet_id </font><font color="#007700">= </font><font color="#0000BB">wddx_packet_start</font><font color="#007700">(</font><font color="#DD0000">"PHP"</font><font color="#007700">);<br /></font><font color="#0000BB">wddx_add_vars</font><font color="#007700">(</font><font color="#0000BB">$packet_id</font><font color="#007700">, </font><font color="#DD0000">"pi"</font><font color="#007700">);<br /><br /></font><font color="#FF8000">/* Suppose $cities came from database */<br /></font><font color="#0000BB">$cities </font><font color="#007700">= array(</font><font color="#DD0000">"Austin"</font><font color="#007700">, </font><font color="#DD0000">"Novato"</font><font color="#007700">, </font><font color="#DD0000">"Seattle"</font><font color="#007700">);<br /></font><font color="#0000BB">wddx_add_vars</font><font color="#007700">(</font><font color="#0000BB">$packet_id</font><font color="#007700">, </font><font color="#DD0000">"cities"</font><font color="#007700">);<br /><br /></font><font color="#0000BB">$packet </font><font color="#007700">= </font><font color="#0000BB">wddx_packet_end</font><font color="#007700">(</font><font color="#0000BB">$packet_id</font><font color="#007700">);<br />echo </font><font color="#0000BB">$packet</font><font color="#007700">;<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;      This example will produce:
     </P
><TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>&#60;wddxPacket version='1.0'&#62;&#60;header comment='PHP'/&#62;&#60;data&#62;&#60;struct&#62;
&#60;var name='pi'&#62;&#60;number&#62;3.1415926&#60;/number&#62;&#60;/var&#62;&#60;var name='cities'&#62;
&#60;array length='3'&#62;&#60;string&#62;Austin&#60;/string&#62;&#60;string&#62;Novato&#60;/string&#62;
&#60;string&#62;Seattle&#60;/string&#62;&#60;/array&#62;&#60;/var&#62;&#60;/struct&#62;&#60;/data&#62;&#60;/wddxPacket&#62;</PRE
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><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      If you want to serialize non-ASCII characters you have to convert
      your data to UTF-8 first (see <A
HREF="function.utf8-encode.html"
><B
CLASS="function"
>utf8_encode()</B
></A
> and
      <A
HREF="function.iconv.html"
><B
CLASS="function"
>iconv()</B
></A
>).
     </P
></BLOCKQUOTE
></DIV
></DIV
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><DIV
CLASS="TOC"
><DL
><DT
><B
>目录</B
></DT
><DT
><A
HREF="function.wddx-add-vars.html"
>wddx_add_vars</A
>&nbsp;--&nbsp;Add variables to a WDDX packet with the specified ID</DT
><DT
><A
HREF="function.wddx-deserialize.html"
>wddx_deserialize</A
>&nbsp;--&nbsp;别名 <A
HREF="function.wddx-unserialize.html"
><B
CLASS="function"
>wddx_unserialize()</B
></A
></DT
><DT
><A
HREF="function.wddx-packet-end.html"
>wddx_packet_end</A
>&nbsp;--&nbsp;Ends a WDDX packet with the specified ID</DT
><DT
><A
HREF="function.wddx-packet-start.html"
>wddx_packet_start</A
>&nbsp;--&nbsp;Starts a new WDDX packet with structure inside it</DT
><DT
><A
HREF="function.wddx-serialize-value.html"
>wddx_serialize_value</A
>&nbsp;--&nbsp;Serialize a single value into a WDDX packet</DT
><DT
><A
HREF="function.wddx-serialize-vars.html"
>wddx_serialize_vars</A
>&nbsp;--&nbsp;Serialize variables into a WDDX packet</DT
><DT
><A
HREF="function.wddx-unserialize.html"
>wddx_unserialize</A
>&nbsp;--&nbsp;Unserializes a WDDX packet</DT
></DL
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