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55 lines
2.4 KiB
HTML
55 lines
2.4 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>释放所有的会话变量</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.session-unset" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">session_unset</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">session_unset</span> — <span class="dc-title">释放所有的会话变量</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.session-unset-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>session_unset</strong></span>
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( <span class="methodparam">void</span>
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) : <span class="type"><span class="type void">void</span></span></div>
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<p class="para rdfs-comment">
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<span class="function"><strong>session_unset()</strong></span> 会释放当前会话注册的所有会话变量。
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.session-unset-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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没有返回值。
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.session-unset-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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如果使用的是 <var class="varname"><var class="varname"><a href="reserved.variables.session.html" class="classname">$_SESSION</a></var></var> (或者PHP 4.0.6或更早版本的 <var class="varname"><var class="varname">$HTTP_SESSION_VARS</var></var>
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) ，请使用 <span class="function"><a href="unset.html" class="function">unset()</a></span> 去
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注销会话变量，即
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<em>unset ($_SESSION['varname']);</em>.
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</p>
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</p></blockquote>
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<div class="caution"><strong class="caution">Caution</strong>
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<p class="para">
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请不要使用<em>unset($_SESSION)</em>来释放整个<var class="varname"><var class="varname"><a href="reserved.variables.session.html" class="classname">$_SESSION</a></var></var>，
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因为它将会禁用通过全局<var class="varname"><var class="varname"><a href="reserved.variables.session.html" class="classname">$_SESSION</a></var></var>去注册会话变量
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</p>
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</div>
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</div>
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</div></div></div></body></html> |