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_unset</H1
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>    (PHP 4, PHP 5)</P
>session_unset&nbsp;--&nbsp;
     Free all session variables
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>Description</H2
>void <B
CLASS="methodname"
>session_unset</B
> ( void  )<BR
></BR
><P
>&#13;     The <B
CLASS="function"
>session_unset()</B
> function frees all session variables
     currently registered.
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>注意: </B
>
      If <CODE
CLASS="varname"
>$_SESSION</CODE
> (or
      <CODE
CLASS="varname"
>$HTTP_SESSION_VARS</CODE
> for PHP 4.0.6 or less) is
      used, use <A
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><B
CLASS="function"
>unset()</B
></A
> to unregister a session
      variable, i.e. <TT
CLASS="literal"
>unset ($_SESSION['varname']);</TT
>.
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>小心</B
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>&#13;       Do NOT unset the whole <CODE
CLASS="varname"
>$_SESSION</CODE
> with
       <TT
CLASS="literal"
>unset($_SESSION)</TT
> as this will disable the
       registering of session variables through the
       <CODE
CLASS="varname"
>$_SESSION</CODE
> superglobal.
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