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148 lines
5.1 KiB
HTML
148 lines
5.1 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>获取互联网主机名对应的 MX 记录</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.getmxrr" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">getmxrr</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">getmxrr</span> — <span class="dc-title">获取互联网主机名对应的 MX 记录</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.getmxrr-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>getmxrr</strong></span>
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( <span class="methodparam"><span class="type">string</span> <code class="parameter">$hostname</code></span>
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, <span class="methodparam"><span class="type">array</span> <code class="parameter reference">&$mxhosts</code></span>
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[, <span class="methodparam"><span class="type">array</span> <code class="parameter reference">&$weight</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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搜索 <code class="parameter">hostname</code>对应的 MX DNS 记录。
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.getmxrr-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">hostname</code></dt>
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<dd>
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<p class="para">
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互联网主机名。
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</p>
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</dd>
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<dt>
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<code class="parameter">mxhosts</code></dt>
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<dd>
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<p class="para">
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找到的 MX 记录列表存放于 <code class="parameter">mxhosts</code> 数组。
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</p>
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</dd>
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<dt>
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<code class="parameter">weight</code></dt>
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<dd>
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<p class="para">
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提供了 <code class="parameter">weight</code> 数组后，它会用找到的权重信息填充数组。
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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.getmxrr-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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找到记录返回 <strong><code>TRUE</code></strong>，没找到或者出错时返回 <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.getmxrr-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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Windows 平台上也能用这个函数了。
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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 notes" id="refsect1-function.getmxrr-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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本函数不应使用于地址验证。
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仅在 MX 记录在 DNS 中找到时才会返回，然而根据 <a href="http://www.faqs.org/rfcs/rfc2821" class="link external">» RFC 2821</a>，
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没有 MX 记录时， <code class="parameter">hostname</code> 本身就是 MX 主机，优先级为 <em>0</em>。
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</p>
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</p></blockquote>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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在兼容 Windows 实现之前的版本， 可以使用
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<a href="http://pear.php.net/" class="link external">» PEAR</a> class 的
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<a href="http://pear.php.net/package/Net_DNS" class="link external">» Net_DNS</a>。
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.getmxrr-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="checkdnsrr.html" class="function" rel="rdfs-seeAlso">checkdnsrr()</a> - 给指定的主机（域名）或者IP地址做DNS通信检查</span></li>
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<li class="member"><span class="function"><a href="dns_get_record.html" class="function" rel="rdfs-seeAlso">dns_get_record()</a> - 获取指定主机的DNS记录</span></li>
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<li class="member"><span class="function"><a href="gethostbyname.html" class="function" rel="rdfs-seeAlso">gethostbyname()</a> - 返回主机名对应的 IPv4地址。</span></li>
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<li class="member"><span class="function"><a href="gethostbynamel.html" class="function" rel="rdfs-seeAlso">gethostbynamel()</a> - 获取互联网主机名对应的 IPv4 地址列表</span></li>
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<li class="member"><span class="function"><a href="gethostbyaddr.html" class="function" rel="rdfs-seeAlso">gethostbyaddr()</a> - 获取指定的IP地址对应的主机名</span></li>
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<li class="member">Linux 手册页面 <em>named(8)</em></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> |