Source of: /manual/en/function.checkdnsrr.php
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<div id="function.checkdnsrr" class="refentry">
<div class="refnamediv">
<h1 class="refname">checkdnsrr</h1>
<p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">checkdnsrr</span> — <span class="dc-title">Check DNS records corresponding to a given Internet host name or IP address</span></p>
</div>
<a name="function.checkdnsrr.description"></a><div class="refsect1 description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">bool</span> <span class="methodname"><b>checkdnsrr</b></span>
( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$host</tt></span>
[, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$type</tt></span>
] )</div>
<p class="para rdfs-comment">
Searches DNS for records of type <i><tt class="parameter">type</tt></i>
corresponding to <i><tt class="parameter">host</tt></i>
.
</p>
</div>
<a name="function.checkdnsrr.parameters"></a><div class="refsect1 parameters">
<h3 class="title">Parameters</h3>
<p class="para">
</p><dl>
<dt class="varlistentry">
<span class="term"><i><tt class="parameter">host</tt></i>
</span>
</dt><dd class="listitem">
<p class="para">
<i><tt class="parameter">host</tt></i>
may either be the IP address in
dotted-quad notation or the host name.
</p>
</dd>
<dt class="varlistentry">
<span class="term"><i><tt class="parameter">type</tt></i>
</span>
</dt><dd class="listitem">
<p class="para">
<i><tt class="parameter">type</tt></i>
may be any one of: A, MX, NS, SOA,
PTR, CNAME, AAAA, A6, SRV, NAPTR, TXT or ANY. The default is MX.
</p>
</dd>
</dl>
<p>
</p>
</div>
<a name="function.checkdnsrr.returnvalues"></a><div class="refsect1 returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns <b><tt class="constant">TRUE</tt></b> if any records are found; returns <b><tt class="constant">FALSE</tt></b> if no records
were found or if an error occurred.
</p>
</div>
<a name="function.checkdnsrr.changelog"></a><div class="refsect1 changelog">
<h3 class="title">Changelog</h3>
<p class="para">
</p><table class="doctable informaltable">
<thead valign="middle">
<tr valign="middle">
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody valign="middle" class="tbody">
<tr valign="middle">
<td align="left">5.3.0</td>
<td align="left">
This function is now available on Windows platforms.
</td>
</tr>
<tr valign="middle">
<td align="left">5.2.4</td>
<td align="left">
TXT <i><tt class="parameter">type</tt></i>
was added.
</td>
</tr>
<tr valign="middle">
<td align="left">5.0.0</td>
<td align="left">
AAAA <i><tt class="parameter">type</tt></i>
was added.
</td>
</tr>
</tbody>
</table>
<p>
</p>
</div>
<a name="function.checkdnsrr.notes"></a><div class="refsect1 notes">
<h3 class="title">Notes</h3>
<blockquote><p><b class="note">Note</b>:
For compatibility with Windows before this was implemented, then try the
<a href="http://pear.php.net/" class="link external">» PEAR</a> class
<a href="http://pear.php.net/package/Net_DNS" class="link external">» Net_DNS</a>.
<br />
</p></blockquote>
</div>
<a name="function.checkdnsrr.seealso"></a><div class="refsect1 seealso">
<h3 class="title">See Also</h3>
<p class="para">
</p><ul class="simplelist">
<li class="member"><a href="function.dns-get-record.php" class="function" rel="rdfs-seeAlso">dns_get_record()</a> - Fetch DNS Resource Records associated with a hostname</li>
<li class="member"><a href="function.getmxrr.php" class="function" rel="rdfs-seeAlso">getmxrr()</a> - Get MX records corresponding to a given Internet host name</li>
<li class="member"><a href="function.gethostbyaddr.php" class="function" rel="rdfs-seeAlso">gethostbyaddr()</a> - Get the Internet host name corresponding to a given IP address</li>
<li class="member"><a href="function.gethostbyname.php" class="function" rel="rdfs-seeAlso">gethostbyname()</a> - Get the IPv4 address corresponding to a given Internet host name</li>
<li class="member"><a href="function.gethostbynamel.php" class="function" rel="rdfs-seeAlso">gethostbynamel()</a> - Get a list of IPv4 addresses corresponding to a given Internet host
name</li>
<li class="member">the named(8) manual page</li>
</ul><p>
</p>
</div>
</div><?php manual_footer(); ?>
