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157 lines
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HTML
157 lines
6.2 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>Copies data from one stream to another</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.stream-copy-to-stream" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">stream_copy_to_stream</h1>
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<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">stream_copy_to_stream</span> — <span class="dc-title">Copies data from one stream to another</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.stream-copy-to-stream-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>stream_copy_to_stream</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$source</code></span>
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, <span class="methodparam"><span class="type">resource</span> <code class="parameter">$dest</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$maxlength</code><span class="initializer"> = -1</span></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$offset</code><span class="initializer"> = 0</span></span>
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]] ) : <span class="type">int</span></div>
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<p class="para rdfs-comment">
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Makes a copy of up to <code class="parameter">maxlength</code> bytes
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of data from the current position (or from the
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<code class="parameter">offset</code> position, if specified) in
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<code class="parameter">source</code> to <code class="parameter">dest</code>. If
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<code class="parameter">maxlength</code> is not specified, all remaining content in
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<code class="parameter">source</code> will be copied.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.stream-copy-to-stream-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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The source stream
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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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The destination stream
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</p>
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</dd>
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<dt>
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<code class="parameter">maxlength</code></dt>
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<dd>
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<p class="para">
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Maximum bytes to copy
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</p>
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</dd>
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<dt>
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<code class="parameter">offset</code></dt>
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<dd>
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<p class="para">
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The offset where to start to copy data
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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.stream-copy-to-stream-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns the total count of bytes copied, 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.stream-copy-to-stream-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>5.1.0</td>
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<td>
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Added the <code class="parameter">offset</code> parameter
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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.stream-copy-to-stream-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-4818">
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<p><strong>Example #1 A <span class="function"><strong>stream_copy_to_stream()</strong></span> example</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 />$src </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">'http://www.example.com'</span><span style="color: #007700">, </span><span style="color: #DD0000">'r'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$dest1 </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">'first1k.txt'</span><span style="color: #007700">, </span><span style="color: #DD0000">'w'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$dest2 </span><span style="color: #007700">= </span><span style="color: #0000BB">fopen</span><span style="color: #007700">(</span><span style="color: #DD0000">'remainder.txt'</span><span style="color: #007700">, </span><span style="color: #DD0000">'w'</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #0000BB">stream_copy_to_stream</span><span style="color: #007700">(</span><span style="color: #0000BB">$src</span><span style="color: #007700">, </span><span style="color: #0000BB">$dest1</span><span style="color: #007700">, </span><span style="color: #0000BB">1024</span><span style="color: #007700">) . </span><span style="color: #DD0000">" bytes copied to first1k.txt\n"</span><span style="color: #007700">;<br />echo </span><span style="color: #0000BB">stream_copy_to_stream</span><span style="color: #007700">(</span><span style="color: #0000BB">$src</span><span style="color: #007700">, </span><span style="color: #0000BB">$dest2</span><span style="color: #007700">) . </span><span style="color: #DD0000">" bytes copied to remainder.txt\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.stream-copy-to-stream-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="copy.html" class="function" rel="rdfs-seeAlso">copy()</a> - 拷贝文件</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> |