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>session_name</A
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>session_name -- Get and/or set the current session name</DIV
><DIV
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><H2
>Description</H2
><DIV
CLASS="funcsynopsis"
><P
></P
><CODE
CLASS="FUNCDEF"
>string session_name</CODE
>(string 
      [<SPAN
CLASS="optional"
>name</SPAN
>]
     );<P
></P
></DIV
><P
>&#13;     <B
CLASS="function"
>session_name()</B
> returns the name of the current
     session. If <TT
CLASS="parameter"
><I
>name</I
></TT
> 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 resetted 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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>Example 1. <B
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>session_name()</B
> examples</B
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>  1&nbsp;
  2&nbsp;&#60;?php
  3&nbsp;
  4&nbsp;# set the session name to WebsiteID
  5&nbsp;
  6&nbsp;$previous_name = session_name ("WebsiteID");
  7&nbsp;
  8&nbsp;echo "The previous session name was $previous_name&#60;p&#62;";
  9&nbsp;?&#62;
 10&nbsp;     </PRE
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><B
>Note: </B
>
      This function was added in PHP 4.0.
     </P
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