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

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><DIV
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><DIV
CLASS="TITLEPAGE"
><H1
CLASS="title"
>LXXXVII. Mhash Functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN118942"
></A
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mhash.intro"
>简介</A
></H1
><P
>&#13;     These functions are intended to work with <A
HREF="http://mhash.sourceforge.net/"
TARGET="_top"
>mhash</A
>. Mhash can be used to create checksums,
     message digests, message authentication codes, and more.
    </P
><P
>&#13;     This is an interface to the mhash library. mhash supports a wide
     variety of hash algorithms such as MD5, SHA1, GOST, and many
     others. For a complete list of supported hashes, refer to the
     documentation of mhash. The general rule is that you can access
     the hash algorithm from PHP with MHASH_HASHNAME. For example, to
     access TIGER you use the PHP constant MHASH_TIGER.
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      本扩展已被移动到 <A
HREF="http://pecl.php.net"
TARGET="_top"
>PECL</A
> 库中且自以下版本起不再被绑定到 PHP 中：5.3.0.
     </P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mhash.requirements"
>需求</A
></H1
><P
>&#13;     To use it, download the mhash distribution from <A
HREF="http://mhash.sourceforge.net/"
TARGET="_top"
>its web site</A
> and follow the included
     installation instructions.
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mhash.installation"
>安装</A
></H1
><P
>&#13;  You need to compile PHP with the
  <CODE
CLASS="option"
>--with-mhash[=DIR]</CODE
> parameter to enable
  this extension. DIR is the mhash install directory.
 </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mhash.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="mhash.resources"
>资源类型</A
></H1
><P
>本扩展模块未定义任何资源类型。</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mhash.constants"
>预定义常量</A
></H1
><P
>以下常量由本扩展模块定义，因此只有在本扩展模块被编译到
PHP 中，或者在运行时被动态加载后才有效。</P
><P
>&#13;  Here is a list of hashes which are currently supported by mhash. If a
  hash is not listed here, but is listed by mhash as supported, you can
  safely assume that this documentation is outdated.
  <P
></P
><UL
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_ADLER32</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_CRC32</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_CRC32B</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_GOST</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_HAVAL128</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_HAVAL160</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_HAVAL192</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_HAVAL256</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_MD4</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_MD5</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_RIPEMD160</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_SHA1</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_SHA256</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_TIGER</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_TIGER128</B
></TT
>
    </P
></LI
><LI
><P
>&#13;     <TT
CLASS="constant"
><B
>MHASH_TIGER160</B
></TT
>
    </P
></LI
></UL
>
 </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="mhash.examples"
>范例</A
></H1
><P
>&#13;     <TABLE
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN119022"
></A
><P
><B
>例 1. Compute the MD5 digest and hmac and print it out as hex</B
></P
><TABLE
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$input </font><font color="#007700">= </font><font color="#DD0000">"what do ya want for nothing?"</font><font color="#007700">;<br /></font><font color="#0000BB">$hash </font><font color="#007700">= </font><font color="#0000BB">mhash</font><font color="#007700">(</font><font color="#0000BB">MHASH_MD5</font><font color="#007700">, </font><font color="#0000BB">$input</font><font color="#007700">);<br />echo </font><font color="#DD0000">"The hash is " </font><font color="#007700">. </font><font color="#0000BB">bin2hex</font><font color="#007700">(</font><font color="#0000BB">$hash</font><font color="#007700">) . </font><font color="#DD0000">"&lt;br /&gt;\n"</font><font color="#007700">;<br /></font><font color="#0000BB">$hash </font><font color="#007700">= </font><font color="#0000BB">mhash</font><font color="#007700">(</font><font color="#0000BB">MHASH_MD5</font><font color="#007700">, </font><font color="#0000BB">$input</font><font color="#007700">, </font><font color="#DD0000">"Jefe"</font><font color="#007700">);<br />echo </font><font color="#DD0000">"The hmac is " </font><font color="#007700">. </font><font color="#0000BB">bin2hex</font><font color="#007700">(</font><font color="#0000BB">$hash</font><font color="#007700">) . </font><font color="#DD0000">"&lt;br /&gt;\n"</font><font color="#007700">;<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>&#13;       This will produce:
       <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
CELLPADDING="5"
><TR
><TD
><PRE
CLASS="screen"
>The hash is d03cb659cbf9192dcd066272249f8412 
The hmac is 750c783e6ab0b503eaa86e310a5db738</PRE
></TD
></TR
></TABLE
>
      </P
></DIV
></TD
></TR
></TABLE
>
    </P
></DIV
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>目录</B
></DT
><DT
><A
HREF="function.mhash-count.html"
>mhash_count</A
>&nbsp;--&nbsp;Get the highest available hash id</DT
><DT
><A
HREF="function.mhash-get-block-size.html"
>mhash_get_block_size</A
>&nbsp;--&nbsp;Get the block size of the specified hash</DT
><DT
><A
HREF="function.mhash-get-hash-name.html"
>mhash_get_hash_name</A
>&nbsp;--&nbsp;Get the name of the specified hash</DT
><DT
><A
HREF="function.mhash-keygen-s2k.html"
>mhash_keygen_s2k</A
>&nbsp;--&nbsp;Generates a key</DT
><DT
><A
HREF="function.mhash.html"
>mhash</A
>&nbsp;--&nbsp;Compute hash</DT
></DL
></DIV
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