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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>返回符号连接指向的目标</title>
</head>
<body class="docs"><div id="layout">
<div id="layout-content"><div id="function.readlink" class="refentry">
<div class="refnamediv">
<h1 class="refname">readlink</h1>
<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">readlink</span> &mdash; <span class="dc-title">返回符号连接指向的目标</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.readlink-description">
<h3 class="title">说明</h3>
<div class="methodsynopsis dc-description">
<span class="methodname"><strong>readlink</strong></span>
( <span class="methodparam"><span class="type">string</span> <code class="parameter">$path</code></span>
) : <span class="type">string</span></div>
<p class="para rdfs-comment">
<span class="function"><strong>readlink()</strong></span> 和同名的 C
函数做同样的事,返回符号连接的内容。
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.readlink-parameters">
<h3 class="title">参数</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">path</code></dt>
<dd>
<p class="para">
链接符号的路径。
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 changelog" id="refsect1-function.readlink-changelog">
<h3 class="title">更新日志</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>版本</th>
<th>说明</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>5.3.0</td>
<td>
此函数在 Windows 平台下可用Vista、Server
2008 或更高版本)。
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.readlink-returnvalues">
<h3 class="title">返回值</h3>
<p class="para">
返回链接的路径内容,出错则返回 <strong><code>FALSE</code></strong>
</p>
</div>
<div class="refsect1 examples" id="refsect1-function.readlink-examples">
<h3 class="title">范例</h3>
<p class="para">
<div class="example" id="example-2836">
<p><strong>Example #1 <span class="function"><strong>readlink()</strong></span></strong></p>
<div class="example-contents">
<div class="phpcode"><pre><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br /></span><span style="color: #FF8000">//&nbsp;output&nbsp;e.g.&nbsp;/boot/vmlinux-2.4.20-xfs<br /></span><span style="color: #007700">echo&nbsp;</span><span style="color: #0000BB">readlink</span><span style="color: #007700">(</span><span style="color: #DD0000">'/vmlinuz'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</pre></div>
</div>
</div>
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.readlink-seealso">
<h3 class="title">参见</h3>
<p class="para">
<ul class="simplelist">
<li class="member"><span class="function"><a href="is_link.html" class="function" rel="rdfs-seeAlso">is_link()</a> - 判断给定文件名是否为一个符号连接</span></li>
<li class="member"><span class="function"><a href="symlink.html" class="function" rel="rdfs-seeAlso">symlink()</a> - 建立符号连接</span></li>
<li class="member"><span class="function"><a href="linkinfo.html" class="function" rel="rdfs-seeAlso">linkinfo()</a> - 获取一个连接的信息</span></li>
</ul>
</p>
</div>
</div></div></div></body></html>