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_cache_expire</H1
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><P
>    (PHP 4 &#62;= 4.2.0, PHP 5)</P
>session_cache_expire&nbsp;--&nbsp;Return current cache expire</DIV
><DIV
CLASS="refsect1"
><A
NAME="AEN208225"
></A
><H2
>Description</H2
>int <B
CLASS="methodname"
>session_cache_expire</B
> ( [int new_cache_expire] )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>session_cache_expire()</B
> returns the current setting of
     <TT
CLASS="literal"
>session.cache_expire</TT
>. The value returned should be read
     in minutes, defaults to 180. If <CODE
CLASS="parameter"
>new_cache_expire</CODE
>
     is given, the current cache expire is replaced with
     <CODE
CLASS="parameter"
>new_cache_expire</CODE
>.
    </P
><P
>&#13;     The cache expire is reset to the default value of 180 stored in
     <TT
CLASS="literal"
>session.cache_limiter</TT
> at request startup time. Thus,
     you need to call <B
CLASS="function"
>session_cache_expire()</B
> for every
     request (and before <A
HREF="function.session-start.html"
><B
CLASS="function"
>session_start()</B
></A
> is called).
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><B
>例 1. <B
CLASS="function"
>session_cache_expire()</B
> example</B
></P
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /><br /></font><font color="#FF8000">/* set the cache limiter to 'private' */<br /><br /></font><font color="#0000BB">session_cache_limiter</font><font color="#007700">(</font><font color="#DD0000">'private'</font><font color="#007700">);<br /></font><font color="#0000BB">$cache_limiter </font><font color="#007700">= </font><font color="#0000BB">session_cache_limiter</font><font color="#007700">();<br /><br /></font><font color="#FF8000">/* set the cache expire to 30 minutes */<br /></font><font color="#0000BB">session_cache_expire</font><font color="#007700">(</font><font color="#0000BB">30</font><font color="#007700">);<br /></font><font color="#0000BB">$cache_expire </font><font color="#007700">= </font><font color="#0000BB">session_cache_expire</font><font color="#007700">();<br /><br /></font><font color="#FF8000">/* start the session */<br /><br /></font><font color="#0000BB">session_start</font><font color="#007700">();<br /><br />echo </font><font color="#DD0000">"The cache limiter is now set to $cache_limiter&lt;br /&gt;"</font><font color="#007700">;<br />echo </font><font color="#DD0000">"The cached session pages expire after $cache_expire minutes"</font><font color="#007700">;<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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><DIV
CLASS="note"
><BLOCKQUOTE
CLASS="note"
><P
><B
>注意: </B
>
      Setting <CODE
CLASS="parameter"
>new_cache_expire</CODE
> is of value only, if
      <TT
CLASS="literal"
>session.cache_limiter</TT
> is set to a value
      <SPAN
CLASS="emphasis"
><I
CLASS="emphasis"
>different</I
></SPAN
> from <TT
CLASS="literal"
>nocache</TT
>.
     </P
></BLOCKQUOTE
></DIV
><P
>&#13;     See also the configuration settings <A
HREF="ref.session.html#ini.session.cache-expire"
>&#13;     session.cache_expire</A
>, <A
HREF="ref.session.html#ini.session.cache-limiter"
>&#13;     session.cache_limiter</A
> and <A
HREF="function.session-cache-limiter.html"
><B
CLASS="function"
>session_cache_limiter()</B
></A
>.
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