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95 lines
4.4 KiB
HTML
95 lines
4.4 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>返回目录中的可用空间</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.disk-free-space" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">disk_free_space</h1>
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<p class="verinfo">(PHP 4 >= 4.1.0, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">disk_free_space</span> — <span class="dc-title">返回目录中的可用空间</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.disk-free-space-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>disk_free_space</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$directory</code></span>
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) : <span class="type">float</span></div>
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<p class="para rdfs-comment">
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给出一个包含有一个目录的字符串，本函数将根据相应的文件系统或磁盘分区返回可用的字节数。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.disk-free-space-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">directory</code></dt>
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<dd>
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<p class="para">
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文件系统目录或者磁盘分区。
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</p>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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如果指定了文件名而不是文件目录，这个函数的行为将并不统一，会因操作系统和 PHP 版本而异。
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</p>
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</p></blockquote>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.disk-free-space-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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以浮点返回可用的字节数， 或者在失败时返回 <strong><code>FALSE</code></strong>。
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.disk-free-space-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-2767">
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<p><strong>Example #1 <span class="function"><strong>disk_free_space()</strong></span> 例子</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// $df 包含根目录下可用的字节数<br /></span><span style="color: #0000BB">$df </span><span style="color: #007700">= </span><span style="color: #0000BB">disk_free_space</span><span style="color: #007700">(</span><span style="color: #DD0000">"/"</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">//在 Windows 下:<br /></span><span style="color: #0000BB">$df_c </span><span style="color: #007700">= </span><span style="color: #0000BB">disk_free_space</span><span style="color: #007700">(</span><span style="color: #DD0000">"C:"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$df_d </span><span style="color: #007700">= </span><span style="color: #0000BB">disk_free_space</span><span style="color: #007700">(</span><span style="color: #DD0000">"D:"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.disk-free-space-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>: <span class="simpara">此函数不能作用于<a href="features.remote_files.html" class="link">远程文件</a>，被检查的文件必须是可通过服务器的文件系统访问的。</span></p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.disk-free-space-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="disk_total_space.html" class="function" rel="rdfs-seeAlso">disk_total_space()</a> - 返回一个目录的磁盘总大小</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |