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158 lines
5.6 KiB
HTML
158 lines
5.6 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>拷贝文件</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.copy" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">copy</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">copy</span> — <span class="dc-title">拷贝文件</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.copy-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>copy</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$source</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$dest</code></span>
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[, <span class="methodparam"><span class="type">resource</span> <code class="parameter">$context</code></span>
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] ) : <span class="type">bool</span></div>
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<p class="para rdfs-comment">
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将文件从 <code class="parameter">source</code> 拷贝到 <code class="parameter">dest</code>。
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</p>
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<p class="para">
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如果要移动文件的话，请使用 <span class="function"><a href="rename.html" class="function">rename()</a></span> 函数。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.copy-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">source</code></dt>
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<dd>
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<p class="para">
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源文件路径。
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</p>
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</dd>
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<dt>
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<code class="parameter">dest</code></dt>
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<dd>
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<p class="para">
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目标路径。如果 <code class="parameter">dest</code> 是一个 URL，则如果封装协议不支持覆盖已有的文件时拷贝操作会失败。
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</p>
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<div class="warning"><strong class="warning">Warning</strong>
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<p class="para">
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如果目标文件已存在，将会被覆盖。
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</p>
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</div>
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</dd>
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<dt>
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<code class="parameter">context</code></dt>
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<dd>
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<p class="para">
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A valid context resource created with
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<span class="function"><a href="stream_context_create.html" class="function">stream_context_create()</a></span>.
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</p>
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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.copy-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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成功时返回 <strong><code>TRUE</code></strong>， 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 changelog" id="refsect1-function.copy-changelog">
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<h3 class="title">更新日志</h3>
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<p class="para">
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>版本</th>
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<th>说明</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td>5.3.0</td>
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<td>
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增加了对 context 的支持。
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</td>
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</tr>
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<tr>
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<td>4.3.0</td>
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<td>
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如果启用了“fopen wrappers”的话，<code class="parameter">source</code> 和
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<code class="parameter">dest</code> 都可以是 URL。更多细节见 <span class="function"><a href="fopen.html" class="function">fopen()</a></span>。
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.copy-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-2765">
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<p><strong>Example #1 <span class="function"><strong>copy()</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 />$file </span><span style="color: #007700">= </span><span style="color: #DD0000">'example.txt'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$newfile </span><span style="color: #007700">= </span><span style="color: #DD0000">'example.txt.bak'</span><span style="color: #007700">;<br /><br />if (!</span><span style="color: #0000BB">copy</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">, </span><span style="color: #0000BB">$newfile</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"failed to copy </span><span style="color: #0000BB">$file</span><span style="color: #DD0000">...\n"</span><span style="color: #007700">;<br />}<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 seealso" id="refsect1-function.copy-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="move_uploaded_file.html" class="function" rel="rdfs-seeAlso">move_uploaded_file()</a> - 将上传的文件移动到新位置</span></li>
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<li class="member"><span class="function"><a href="rename.html" class="function" rel="rdfs-seeAlso">rename()</a> - 重命名一个文件或目录</span></li>
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<li class="member">The section of the manual about <a href="features.file_upload.html" class="link">handling file uploads</a></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> |