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

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

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>session_destroy</H1
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><P
>    (PHP 4, PHP 5)</P
>session_destroy&nbsp;--&nbsp;Destroys all data registered to a session</DIV
><DIV
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NAME="AEN208321"
></A
><H2
>Description</H2
>bool <B
CLASS="methodname"
>session_destroy</B
> ( void  )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>session_destroy()</B
> destroys all of the data
     associated with the current session. It does not unset any of
     the global variables associated with the session, or unset the
     session cookie.
    </P
><P
>&#13;     In order to kill the session altogether, like to log the user out, the
     session id must also be unset. If a cookie is used to propagate the 
     session id (default behavior), then the session cookie must be deleted.  
     <A
HREF="function.setcookie.html"
><B
CLASS="function"
>setcookie()</B
></A
> may be used for that.
    </P
><P
>&#13;     如果成功则返回 <TT
CLASS="constant"
><B
>TRUE</B
></TT
>，失败则返回 <TT
CLASS="constant"
><B
>FALSE</B
></TT
>。
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><P
><B
>例 1. Destroying a session with <CODE
CLASS="varname"
>$_SESSION</CODE
></B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /></font><font color="#FF8000">// Initialize the session.<br />// If you are using session_name("something"), don't forget it now!<br /></font><font color="#0000BB">session_start</font><font color="#007700">();<br /><br /></font><font color="#FF8000">// Unset all of the session variables.<br /></font><font color="#0000BB">$_SESSION </font><font color="#007700">= array();<br /><br /></font><font color="#FF8000">// If it's desired to kill the session, also delete the session cookie.<br />// Note: This will destroy the session, and not just the session data!<br /></font><font color="#007700">if (isset(</font><font color="#0000BB">$_COOKIE</font><font color="#007700">[</font><font color="#0000BB">session_name</font><font color="#007700">()])) {<br />&nbsp;&nbsp;&nbsp;&nbsp;</font><font color="#0000BB">setcookie</font><font color="#007700">(</font><font color="#0000BB">session_name</font><font color="#007700">(), </font><font color="#DD0000">''</font><font color="#007700">, </font><font color="#0000BB">time</font><font color="#007700">()-</font><font color="#0000BB">42000</font><font color="#007700">, </font><font color="#DD0000">'/'</font><font color="#007700">);<br />}<br /><br /></font><font color="#FF8000">// Finally, destroy the session.<br /></font><font color="#0000BB">session_destroy</font><font color="#007700">();<br /></font><font color="#0000BB">?&gt;</font>
</font>
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    </P
><DIV
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><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      Only use <A
HREF="function.session-unset.html"
><B
CLASS="function"
>session_unset()</B
></A
> for older deprecated code 
      that does not use <CODE
CLASS="varname"
>$_SESSION</CODE
>.
     </P
></BLOCKQUOTE
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><P
>&#13;     See also
     <A
HREF="function.unset.html"
><B
CLASS="function"
>unset()</B
></A
> and
     <A
HREF="function.setcookie.html"
><B
CLASS="function"
>setcookie()</B
></A
>.
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