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session-unset.xml
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105 lines (98 loc) · 2.69 KB
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 682510e91d1f19fb59d2f7aef6ab370e8af842a1 Maintainer: 叶江楠 Status: ready -->
<!-- CREDITS: mowangjuanzi -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.session-unset">
<refnamediv>
<refname>session_unset</refname>
<refpurpose>释放所有的会话变量</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>bool</type><methodname>session_unset</methodname>
<void/>
</methodsynopsis>
<para>
<function>session_unset</function> 会释放当前会话注册的所有会话变量。
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
&no.function.parameters;
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
&return.success;
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>7.2.0</entry>
<entry>
此函数的返回类型现在是 <type>bool</type>。以前是 <type>void</type>。
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="notes">
&reftitle.notes;
<note>
<para>
如果使用的是 <varname>$_SESSION</varname>,请使用 <function>unset</function> 去
注销会话变量,即 <code>unset($_SESSION['varname']);</code>。
</para>
</note>
<caution>
<para>
请不要使用 <code>unset($_SESSION)</code> 来释放整个 <varname>$_SESSION</varname>,
因为它将会禁用通过全局 <varname>$_SESSION</varname> 去注册会话变量。
</para>
</caution>
<note>
<para>
<function>session_unset</function> 的使用与 <code>$_SESSION = []</code> 相同。
</para>
</note>
<caution>
<para>
仅当 session 处于活动状态时,此函数才能起作用。如果 session 尚未启动或已经销毁,它将无法清除
<varname>$_SESSION</varname> 数组。即使 session 不活跃,请使用 <code>$_SESSION = []</code>
来删除所有 session 变量。
</para>
</caution>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->