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<HTML
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>Mhash Functions</TITLE
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><DIV
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><H1
CLASS="title"
>XXXVII. Mhash Functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN22161"
></A
><P
>&#13;    These functions are intended to work with <A
HREF="http://mhash.sourceforge.net/"
TARGET="_top"
>mhash</A
>.</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.
   </P
><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. You need to compile PHP with the
    <TT
CLASS="option"
>--with-mhash</TT
> parameter to enable
    this extension.
   </P
><P
>&#13;    Mhash can be used to create checksums, message digests, and
    more.
   </P
><P
>&#13;    <TABLE
WIDTH="100%"
BORDER="0"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
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></A
><P
><B
>Example 1. Compute the SHA1 key and print it out as hex</B
></P
><TABLE
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><TR
><TD
><PRE
CLASS="programlisting"
>&#13;&#60;?php
$input = "Let us meet at 9 o' clock at the secret place.";
$hash = mhash (MHASH_SHA1, $input);

print "The hash is ".bin2hex ($hash)."\n";
?&#62;
     </PRE
></TD
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>
    This will produce:
    <TABLE
BORDER="0"
BGCOLOR="#E0E0E0"
WIDTH="100%"
><TR
><TD
><PRE
CLASS="programlisting"
>&#13;The hash is d3b85d710d8f6e4e5efd4d5e67d041f9cecedafe
    </PRE
></TD
></TR
></TABLE
>
    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 HAVAL you use the PHP constant MHASH_HAVAL.
   </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    safely assume that this documentation is outdated.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;       MHASH_MD5
      </P
></LI
><LI
><P
>&#13;       MHASH_SHA1
      </P
></LI
><LI
><P
>&#13;       MHASH_HAVAL
      </P
></LI
><LI
><P
>&#13;       MHASH_RIPEMD160
      </P
></LI
><LI
><P
>&#13;       MHASH_RIPEMD128
      </P
></LI
><LI
><P
>&#13;       MHASH_SNEFRU
      </P
></LI
><LI
><P
>&#13;       MHASH_TIGER
      </P
></LI
><LI
><P
>&#13;       MHASH_GOST
      </P
></LI
><LI
><P
>&#13;       MHASH_CRC32
      </P
></LI
><LI
><P
>&#13;       MHASH_CRC32B
      </P
></LI
></UL
>
   </P
></DIV
><DIV
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><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="function.mhash-get-hash-name.html"
>mhash_get_hash_name</A
> &#8212; Get the name of the specified hash</DT
><DT
><A
HREF="function.mhash-get-block-size.html"
>mhash_get_block_size</A
> &#8212; Get the block size of the specified hash</DT
><DT
><A
HREF="function.mhash-count.html"
>mhash_count</A
> &#8212; Get the highest available hash id</DT
><DT
><A
HREF="function.mhash.html"
>mhash</A
> &#8212; Compute hash</DT
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