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

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

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><H1
><A
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>hash_init</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN69578"
></A
><P
>    (no version information, might be only in CVS)</P
>hash_init&nbsp;--&nbsp;Initialize an incremental hashing context</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN69581"
></A
><H2
>Descrição</H2
>resource <B
CLASS="methodname"
>hash_init</B
> ( string algo [, int options, string key] )<BR
></BR
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN69595"
></A
><H2
>Parâmetros</H2
><P
>&#13;   <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>algo</CODE
></DT
><DD
><P
>&#13;       Name of selected hashing algorithm (i.e. "md5", "sha256", "haval160,4", etc..)
      </P
></DD
><DT
><CODE
CLASS="parameter"
>options</CODE
></DT
><DD
><P
>&#13;       Optional settings for hash generation, currently supports only one option:
       <TT
CLASS="constant"
><B
>HASH_HMAC</B
></TT
>.  When specified, the <CODE
CLASS="parameter"
>key</CODE
>
       <SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>must</I
></SPAN
> be specified.
      </P
></DD
><DT
><CODE
CLASS="parameter"
>key</CODE
></DT
><DD
><P
>&#13;       When <TT
CLASS="constant"
><B
>HASH_HMAC</B
></TT
> is specified for <CODE
CLASS="parameter"
>options</CODE
>,
       a shared secret key to be used with the HMAC hashing method must be supplied in this
       parameter.
      </P
></DD
></DL
></DIV
>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN69619"
></A
><H2
>Valores de retornado</H2
><P
>&#13;   Returns a Hashing Context resource for use with <A
HREF="function.hash-update.html"
><B
CLASS="function"
>hash_update()</B
></A
>,
   <A
HREF="function.hash-update-stream.html"
><B
CLASS="function"
>hash_update_stream()</B
></A
>, <A
HREF="function.hash-update-file.html"
><B
CLASS="function"
>hash_update_file()</B
></A
>,
   and <A
HREF="function.hash-final.html"
><B
CLASS="function"
>hash_final()</B
></A
>.
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN69626"
></A
><H2
>Exemplos</H2
><P
>&#13;   <TABLE
WIDTH="100%"
BORDER="0"
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN69629"
></A
><P
><B
>Exemplo 1. Incremental hashing example</B
></P
><TABLE
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><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br />$ctx </font><font color="#007700">= </font><font color="#0000BB">hash_init</font><font color="#007700">(</font><font color="#DD0000">'md5'</font><font color="#007700">);<br /></font><font color="#0000BB">hash_update</font><font color="#007700">(</font><font color="#0000BB">$ctx</font><font color="#007700">, </font><font color="#DD0000">'The quick brown fox '</font><font color="#007700">);<br /></font><font color="#0000BB">hash_update</font><font color="#007700">(</font><font color="#0000BB">$ctx</font><font color="#007700">, </font><font color="#DD0000">'jumped over the lazy dog.'</font><font color="#007700">);<br />echo </font><font color="#0000BB">hash_final</font><font color="#007700">(</font><font color="#0000BB">$ctx</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
><P
>O exemplo acima irá imprimir:</P
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><PRE
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>5c6ffbdd40d9556b73a21e63c3e0e904</PRE
></TD
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></DIV
></TD
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>
  </P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN69634"
></A
><H2
>Veja também</H2
><P
>&#13;   <P
></P
><TABLE
BORDER="0"
><TBODY
><TR
><TD
><A
HREF="function.hash.html"
><B
CLASS="function"
>hash()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.hash-file.html"
><B
CLASS="function"
>hash_file()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.hash-hmac.html"
><B
CLASS="function"
>hash_hmac()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.hash-hmac-file.html"
><B
CLASS="function"
>hash_hmac_file()</B
></A
></TD
></TR
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><P
></P
>
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