<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >session_unset</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="Manual do PHP" HREF="index.html"><LINK REL="UP" TITLE="Funções de manpulação de Sessões" HREF="ref.session.html"><LINK REL="PREVIOUS" TITLE="session_unregister" HREF="function.session-unregister.html"><LINK REL="NEXT" TITLE="session_write_close" HREF="function.session-write-close.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Manual do PHP</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.session-unregister.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.session-write-close.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.session-unset" ></A >session_unset</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN204208" ></A ><P > (PHP 4, PHP 5)</P >session_unset -- Libera todas as variáveis de sessão </DIV ><DIV CLASS="refsect1" ><A NAME="AEN204211" ></A ><H2 >Descrição</H2 >void <B CLASS="methodname" >session_unset</B > ( void )<BR ></BR ><P > A função <B CLASS="function" >session_unset()</B > libera todas as variáveis da sessão atualmente registradas. </P ><DIV CLASS="note" ><BLOCKQUOTE CLASS="note" ><P ><B >Nota: </B > Se <CODE CLASS="varname" >$_SESSION</CODE > (ou <CODE CLASS="varname" >$HTTP_SESSION_VARS</CODE > para PHP 4.0.6 ou inferior) é usada, utilize <A HREF="function.unset.html" ><B CLASS="function" >unset()</B ></A > para desregistrar a variável da sessão. Ex. <TT CLASS="literal" >unset ($_SESSION['varname']);</TT >. </P ></BLOCKQUOTE ></DIV ><P > <DIV CLASS="caution" ><P ></P ><TABLE CLASS="caution" BORDER="1" WIDTH="100%" ><TR ><TD ALIGN="CENTER" ><B >Cuidado</B ></TD ></TR ><TR ><TD ALIGN="LEFT" ><P > NÃO elimina completamente <CODE CLASS="varname" >$_SESSION</CODE > com <TT CLASS="literal" >unset($_SESSION)</TT > enquanto esta desabilitará o registro de variáveis de sessão pela <CODE CLASS="varname" >$_SESSION</CODE > superglobal. </P ></TD ></TR ></TABLE ></DIV > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.session-unregister.html" ACCESSKEY="P" >Anterior</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Principal</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.session-write-close.html" ACCESSKEY="N" >Próxima</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >session_unregister</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.session.html" ACCESSKEY="U" >Acima</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >session_write_close</TD ></TR ></TABLE ></DIV ></BODY ></HTML >