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120 lines
6.4 KiB
HTML
120 lines
6.4 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>为要上传的文件分配空间</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.ftp-alloc" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">ftp_alloc</h1>
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<p class="verinfo">(PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">ftp_alloc</span> — <span class="dc-title">为要上传的文件分配空间</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.ftp-alloc-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>ftp_alloc</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$ftp_stream</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$filesize</code></span>
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[, <span class="methodparam"><span class="type">string</span> <code class="parameter reference">&$result</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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向远程 FTP 服务器发送 <em>ALLO</em> 命令，
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来为要上传的文件分配空间。
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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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很多 FTP 服务器不支持<em>ALLO</em> 命令。
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如果服务器不支持此命令，将会返回错误码（<strong><code>FALSE</code></strong>），
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返回成功码（<strong><code>TRUE</code></strong>）表示预分配空间不是必需的，
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客户端可以继续操作了。
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因此，请仅对需要强制预分配空间服务器使用此函数。
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</p>
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</p></blockquote>
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<p class="para">
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.ftp-alloc-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">ftp_stream</code></dt>
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<dd>
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<p class="para">
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FTP 连接标示符。
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</p>
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</dd>
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<dt>
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<code class="parameter">filesize</code></dt>
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<dd>
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<p class="para">
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要分配的空间，以字节为单位。
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</p>
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</dd>
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<dt>
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<code class="parameter">result</code></dt>
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<dd>
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<p class="para">
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如果提供此参数，那么服务器的响应
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会以文本方式设置到 <code class="parameter">result</code> 中。
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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.ftp-alloc-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 examples" id="refsect1-function.ftp-alloc-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-5303">
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<p><strong>Example #1 <span class="function"><strong>ftp_alloc()</strong></span> 函数例程</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 /><br />$file </span><span style="color: #007700">= </span><span style="color: #DD0000">"/home/user/myfile"</span><span style="color: #007700">;<br /><br /></span><span style="color: #FF8000">// 连接服务器<br /></span><span style="color: #0000BB">$conn_id </span><span style="color: #007700">= </span><span style="color: #0000BB">ftp_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">'ftp.example.com'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$login_result </span><span style="color: #007700">= </span><span style="color: #0000BB">ftp_login</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn_id</span><span style="color: #007700">, </span><span style="color: #DD0000">'anonymous'</span><span style="color: #007700">, </span><span style="color: #DD0000">'user@example.com'</span><span style="color: #007700">);<br /><br />if (</span><span style="color: #0000BB">ftp_alloc</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn_id</span><span style="color: #007700">, </span><span style="color: #0000BB">filesize</span><span style="color: #007700">(</span><span style="color: #0000BB">$file</span><span style="color: #007700">), </span><span style="color: #0000BB">$result</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"Space successfully allocated on server. Sending </span><span style="color: #0000BB">$file</span><span style="color: #DD0000">.\n"</span><span style="color: #007700">;<br /> </span><span style="color: #0000BB">ftp_put</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn_id</span><span style="color: #007700">, </span><span style="color: #DD0000">'/incomming/myfile'</span><span style="color: #007700">, </span><span style="color: #0000BB">$file</span><span style="color: #007700">, </span><span style="color: #0000BB">FTP_BINARY</span><span style="color: #007700">);<br />} else {<br /> echo </span><span style="color: #DD0000">"Unable to allocate space on server. Server said: </span><span style="color: #0000BB">$result</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #0000BB">ftp_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn_id</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.ftp-alloc-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="ftp_put.html" class="function" rel="rdfs-seeAlso">ftp_put()</a> - 上传文件到 FTP 服务器</span></li>
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<li class="member"><span class="function"><a href="ftp_fput.html" class="function" rel="rdfs-seeAlso">ftp_fput()</a> - 上传一个已经打开的文件到 FTP 服务器</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> |