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>sha1_file</H1
><DIV
CLASS="refnamediv"
><A
NAME="AEN226688"
></A
><P
> (PHP 4 >= 4.3.0, PHP 5)</P
>sha1_file -- Calculate the sha1 hash of a file</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN226691"
></A
><H2
>说明</H2
>string <B
CLASS="methodname"
>sha1_file</B
> ( string filename [, bool raw_output] )<BR
></BR
><P
> Calculates the sha1 hash of <CODE
CLASS="parameter"
>filename</CODE
> using the
<A
HREF="http://www.faqs.org/rfcs/rfc3174"
TARGET="_top"
>US Secure Hash Algorithm 1</A
>,
and returns that hash. The hash is a 40-character hexadecimal number.
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN226705"
></A
><H2
>参数</H2
><P
> <P
></P
><DIV
CLASS="variablelist"
><DL
><DT
><CODE
CLASS="parameter"
>filename</CODE
></DT
><DD
><P
> The filename
</P
></DD
><DT
><CODE
CLASS="parameter"
>raw_output</CODE
></DT
><DD
><P
> When <TT
CLASS="constant"
><B
>TRUE</B
></TT
>, returns the digest in raw binary format with a length of
20. Defaults to <TT
CLASS="constant"
><B
>FALSE</B
></TT
>.
</P
></DD
></DL
></DIV
>
</P
></DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN226721"
></A
><H2
>返回值</H2
><P
> Returns a string on success, <TT
CLASS="constant"
><B
>FALSE</B
></TT
> otherwise.
</P
></DIV
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><H2
>更新日志</H2
><P
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></A
><TABLE
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><TH
>版本</TH
><TH
>说明</TH
></TR
></THEAD
><TBODY
><TR
><TD
>5.0.0</TD
><TD
> Added the <CODE
CLASS="parameter"
>raw_output</CODE
> parameter
</TD
></TR
><TR
><TD
>5.1.0</TD
><TD
> Changed the function to use the streams API. It means that you can use
it with wrappers, like <TT
CLASS="literal"
>sha1_file('http://example.com/..')</TT
>
</TD
></TR
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><P
></P
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>
</P
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><DIV
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><A
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></A
><H2
>参见</H2
><P
> <P
></P
><TABLE
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><TBODY
><TR
><TD
><A
HREF="function.sha1.html"
><B
CLASS="function"
>sha1()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.md5-file.html"
><B
CLASS="function"
>md5_file()</B
></A
></TD
></TR
><TR
><TD
><A
HREF="function.crc32.html"
><B
CLASS="function"
>crc32()</B
></A
></TD
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