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_name</H1
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>    (PHP 4, PHP 5)</P
>session_name&nbsp;--&nbsp;Get and/or set the current session name</DIV
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><H2
>Description</H2
>string <B
CLASS="methodname"
>session_name</B
> ( [string name] )<BR
></BR
><P
>&#13;     <B
CLASS="function"
>session_name()</B
> returns the name of the current
     session. If <CODE
CLASS="parameter"
>name</CODE
> is specified, the name of
     the current session is changed to its value.
    </P
><P
>&#13;     The session name references the session id in cookies and
     URLs. It should contain only alphanumeric characters; it should
     be short and descriptive (i.e. for users with enabled cookie
     warnings). The session name is reset to the default value
     stored in <TT
CLASS="literal"
>session.name</TT
> at request startup
     time. Thus, you need to call <B
CLASS="function"
>session_name()</B
>
     for every request (and before <A
HREF="function.session-start.html"
><B
CLASS="function"
>session_start()</B
></A
>
     or <A
HREF="function.session-register.html"
><B
CLASS="function"
>session_register()</B
></A
> are called).
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>&#13;      The session name can't consist of digits only, at least one letter must
      be present. Otherwise a new session id is generated every time.
     </P
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>例 1. <B
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>session_name()</B
> examples</B
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><code><font color="#000000">
<font color="#0000BB">&lt;?php<br /><br /></font><font color="#FF8000">/* set the session name to WebsiteID */<br /><br /></font><font color="#0000BB">$previous_name </font><font color="#007700">= </font><font color="#0000BB">session_name</font><font color="#007700">(</font><font color="#DD0000">"WebsiteID"</font><font color="#007700">);<br /><br />echo </font><font color="#DD0000">"The previous session name was $previous_name&lt;br /&gt;"</font><font color="#007700">;<br /></font><font color="#0000BB">?&gt;</font>
</font>
</code></TD
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>&#13;     See also the <A
HREF="ref.session.html#ini.session.name"
>session.name</A
>
     configuration directive.
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