Sophie: php-manual-zh-5.2.4-1mdv2008.1 noarch

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

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><H1
><A
NAME="function.gzencode"
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>gzencode</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN251454"
></A
><P
>    (PHP 4 &#62;= 4.0.4, PHP 5)</P
>gzencode&nbsp;--&nbsp;Create a gzip compressed string</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN251457"
></A
><H2
>说明</H2
>string <B
CLASS="methodname"
>gzencode</B
> ( string data [, int level [, int encoding_mode]] )<BR
></BR
><P
>   
   This function returns a compressed version of the input
   <CODE
CLASS="parameter"
>data</CODE
> compatible with the output of the
   <B
CLASS="command"
>gzip</B
> program.
  </P
><P
>&#13;   For more information on the GZIP file format, see the document:
   <A
HREF="http://www.faqs.org/rfcs/rfc1952"
TARGET="_top"
>GZIP file format specification
   version 4.3</A
> (RFC 1952).
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN251476"
></A
><H2
>参数</H2
><P
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>data</CODE
></DT
><DD
><P
>&#13;       The data to encode.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>level</CODE
></DT
><DD
><P
>&#13;       The level of compression. Can be given as 0 for no compression up to 9
       for maximum compression. If not given, the default compression level will
       be the default compression level of the zlib library.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>encoding_mode</CODE
></DT
><DD
><P
>&#13;       The encoding mode. Can be <TT
CLASS="constant"
><B
>FORCE_GZIP</B
></TT
> (the default)
       or <TT
CLASS="constant"
><B
>FORCE_DEFLATE</B
></TT
>. 
      </P
><P
>&#13;       If you use <TT
CLASS="constant"
><B
>FORCE_DEFLATE</B
></TT
>, you get a standard zlib
       deflated string (inclusive zlib headers) after the gzip file header but
       without the trailing crc32 checksum.
      </P
></DD
></DL
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN251499"
></A
><H2
>返回值</H2
><P
>&#13;   The encoded string, or <TT
CLASS="constant"
><B
>FALSE</B
></TT
> if an error occurred.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN251503"
></A
><H2
>范例</H2
><P
>&#13;   The resulting data contains the appropriate headers and data
   structure to make a standard .gz file, e.g.:
   <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN251506"
></A
><P
><B
>例 1. Creating a gzip file</B
></P
><TABLE
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$data </font><font color="#007700">= </font><font color="#0000BB">implode</font><font color="#007700">(</font><font color="#DD0000">""</font><font color="#007700">, </font><font color="#0000BB">file</font><font color="#007700">(</font><font color="#DD0000">"bigfile.txt"</font><font color="#007700">));<br /></font><font color="#0000BB">$gzdata </font><font color="#007700">= </font><font color="#0000BB">gzencode</font><font color="#007700">(</font><font color="#0000BB">$data</font><font color="#007700">, </font><font color="#0000BB">9</font><font color="#007700">);<br /></font><font color="#0000BB">$fp </font><font color="#007700">= </font><font color="#0000BB">fopen</font><font color="#007700">(</font><font color="#DD0000">"bigfile.txt.gz"</font><font color="#007700">, </font><font color="#DD0000">"w"</font><font color="#007700">);<br /></font><font color="#0000BB">fwrite</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">, </font><font color="#0000BB">$gzdata</font><font color="#007700">);<br /></font><font color="#0000BB">fclose</font><font color="#007700">(</font><font color="#0000BB">$fp</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
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>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN251509"
></A
><H2
>更新日志</H2
><P
>&#13;   <DIV
CLASS="informaltable"
><P
></P
><A
NAME="AEN251512"
></A
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><THEAD
><TR
><TH
>版本</TH
><TH
>说明</TH
></TR
></THEAD
><TBODY
><TR
><TD
>4.2</TD
><TD
>&#13;        <CODE
CLASS="parameter"
>level</CODE
> was added. <B
CLASS="function"
>gzencode()</B
> 
        only had the <CODE
CLASS="parameter"
>data</CODE
> and the optional
        <CODE
CLASS="parameter"
>encoding_mode</CODE
> parameters before.
       </TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN251526"
></A
><H2
>参见</H2
><P
>&#13;   <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.gzdecode.html"
><B
CLASS="function"
>gzdecode()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.gzdeflate.html"
><B
CLASS="function"
>gzdeflate()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.gzinflate.html"
><B
CLASS="function"
>gzinflate()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.gzuncompress.html"
><B
CLASS="function"
>gzuncompress()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.gzcompress.html"
><B
CLASS="function"
>gzcompress()</B
></A
></TD
></TR
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></P
>
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