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><DIV
CLASS="TITLEPAGE"
><H1
CLASS="title"
>XVI. Crack Functions</H1
><DIV
CLASS="PARTINTRO"
><A
NAME="AEN23441"
></A
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="crack.intro"
>简介</A
></H1
><P
>&#13;     These functions allow you to use the CrackLib library to test the
     'strength' of a password.  The 'strength' of a password is tested by that
     checks length, use of upper and lower case and checked against the
     specified CrackLib dictionary.  CrackLib will also give helpful diagnostic
     messages that will help 'strengthen' the password.
    </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：5.0.0.
     </P
></BLOCKQUOTE
></DIV
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="crack.requirements"
>需求</A
></H1
><P
>&#13;     More information regarding CrackLib along with the library can be found at
     <A
HREF="http://sourceforge.net/projects/cracklib"
TARGET="_top"
>http://sourceforge.net/projects/cracklib</A
>.
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="crack.installation"
>安装</A
></H1
><P
>&#13;  本 <A
HREF="http://pecl.php.net"
TARGET="_top"
>PECL</A
> 扩展未绑定于 PHP 中。
  安装此 PECL 扩展库的信息可在手册中标题为 <A
HREF="install.pecl.html"
>PECL 扩展库安装</A
>的一章中找到。 更多信息如新版本，下载，源文件，维护者信息以及更新日志等可以在这里找到：
  <A
HREF="http://pecl.php.net/package/crack"
TARGET="_top"
>http://pecl.php.net/package/crack</A
>.
 </P
><P
>&#13;  在 PHP 4 中本 <ACRONYM
CLASS="acronym"
>PECL</ACRONYM
> 扩展的源程序位于
PHP 源程序中的 <TT
CLASS="filename"
>ext/</TT
> 目录下或者在上面的
<ACRONYM
CLASS="acronym"
>PECL</ACRONYM
> 连接中。
  In order to use these functions you must compile PHP with Crack support
  by using the <CODE
CLASS="option"
>--with-crack[=DIR]</CODE
> 
  configuration option.
 </P
><P
>&#13;  Windows users will enable <TT
CLASS="filename"
>php_crack.dll</TT
> inside
  of <TT
CLASS="filename"
>php.ini</TT
> in order to use these functions.
  在 PHP 4 中本 <ACRONYM
CLASS="acronym"
>DLL</ACRONYM
> 位于
PHP Windows 执行包中的 <TT
CLASS="filename"
>extensions/</TT
> 目录下。
  可以从 <A
HREF="http://www.php.net/downloads.php"
TARGET="_top"
>PHP
下载页面</A
>或者 <A
HREF="http://snaps.php.net/"
TARGET="_top"
>http://snaps.php.net/</A
>
下载此 <ACRONYM
CLASS="acronym"
>PECL</ACRONYM
> 扩展的
<ACRONYM
CLASS="acronym"
>DLL</ACRONYM
> 文件。
 </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="crack.configuration"
>运行时配置</A
></H1
><P
>这些函数的行为受 <TT
CLASS="filename"
>php.ini</TT
> 的影响。</P
><P
>&#13; <DIV
CLASS="table"
><A
NAME="AEN23477"
></A
><P
><B
>表 1. Crack configuration options</B
></P
><TABLE
BORDER="1"
CLASS="CALSTABLE"
><COL><COL><COL><COL><THEAD
><TR
><TH
>Name</TH
><TH
>Default</TH
><TH
>Changeable</TH
><TH
>Changelog</TH
></TR
></THEAD
><TBODY
><TR
><TD
>crack.default_dictionary</TD
><TD
>NULL</TD
><TD
>PHP_INI_PERDIR</TD
><TD
>Available since PHP 4.0.5.</TD
></TR
></TBODY
></TABLE
></DIV
>
 有关 PHP_INI_* 常量进一步的细节与定义参见<A
HREF="ini.html"
>附录 H</A
>。
 </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="crack.resources"
>资源类型</A
></H1
><P
>&#13;     The CrackLib extension defines a dictionary resource identifier returned
     by <A
HREF="function.crack-opendict.html"
><B
CLASS="function"
>crack_opendict()</B
></A
>.
    </P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="crack.constants"
>预定义常量</A
></H1
><P
>本扩展模块未定义任何常量。</P
></DIV
><DIV
CLASS="section"
><H1
CLASS="section"
><A
NAME="crack.examples"
>范例</A
></H1
><P
>&#13;     This example shows how to open a CrackLib dictionary, test a given
     password, retrieve any diagnostic messages, and close the dictionary.
     <TABLE
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CLASS="EXAMPLE"
><TR
><TD
><DIV
CLASS="example"
><A
NAME="AEN23503"
></A
><P
><B
>例 1. CrackLib example</B
></P
><TABLE
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><TR
><TD
><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#FF8000">// Open CrackLib Dictionary<br /></font><font color="#0000BB">$dictionary </font><font color="#007700">= </font><font color="#0000BB">crack_opendict</font><font color="#007700">(</font><font color="#DD0000">'/usr/local/lib/pw_dict'</font><font color="#007700">)<br />&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;or die(</font><font color="#DD0000">'Unable to open CrackLib dictionary'</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// Perform password check<br /></font><font color="#0000BB">$check </font><font color="#007700">= </font><font color="#0000BB">crack_check</font><font color="#007700">(</font><font color="#0000BB">$dictionary</font><font color="#007700">, </font><font color="#DD0000">'gx9A2s0x'</font><font color="#007700">);<br /><br /></font><font color="#FF8000">// Retrieve messages<br /></font><font color="#0000BB">$diag </font><font color="#007700">= </font><font color="#0000BB">crack_getlastmessage</font><font color="#007700">();<br />echo </font><font color="#0000BB">$diag</font><font color="#007700">; </font><font color="#FF8000">// 'strong password'<br /><br />// Close dictionary<br /></font><font color="#0000BB">crack_closedict</font><font color="#007700">(</font><font color="#0000BB">$dictionary</font><font color="#007700">);<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
></TR
></TABLE
></DIV
></TD
></TR
></TABLE
>
    </P
><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      If <A
HREF="function.crack-check.html"
><B
CLASS="function"
>crack_check()</B
></A
> returns <TT
CLASS="constant"
><B
>TRUE</B
></TT
>,
      <A
HREF="function.crack-getlastmessage.html"
><B
CLASS="function"
>crack_getlastmessage()</B
></A
> will return 'strong password'.
     </P
></BLOCKQUOTE
></DIV
></DIV
></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>目录</B
></DT
><DT
><A
HREF="function.crack-check.html"
>crack_check</A
>&nbsp;--&nbsp;Performs an obscure check with the given password</DT
><DT
><A
HREF="function.crack-closedict.html"
>crack_closedict</A
>&nbsp;--&nbsp;Closes an open CrackLib dictionary </DT
><DT
><A
HREF="function.crack-getlastmessage.html"
>crack_getlastmessage</A
>&nbsp;--&nbsp;Returns the message from the last obscure check</DT
><DT
><A
HREF="function.crack-opendict.html"
>crack_opendict</A
>&nbsp;--&nbsp;Opens a new CrackLib dictionary</DT
></DL
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