Source of: /manual/en/function.inet-ntop.php
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<div id="function.inet-ntop" class="refentry">
<div class="refnamediv">
<h1 class="refname">inet_ntop</h1>
<p class="verinfo">(PHP 5 >= 5.1.0)</p><p class="refpurpose"><span class="refname">inet_ntop</span> — <span class="dc-title">Converts a packed internet address to a human readable representation</span></p>
</div>
<a name="function.inet-ntop.description"></a><div class="refsect1 description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">string</span> <span class="methodname"><b>inet_ntop</b></span>
( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$in_addr</tt></span>
)</div>
<p class="simpara">
This function converts a 32bit IPv4, or 128bit IPv6 address (if PHP
was built with IPv6 support enabled) into an address family appropriate
string representation.
</p>
</div>
<a name="function.inet-ntop.parameters"></a><div class="refsect1 parameters">
<h3 class="title">Parameters</h3>
<p class="para">
</p><dl>
<dt class="varlistentry">
<span class="term"><i><tt class="parameter">in_addr</tt></i>
</span>
</dt><dd class="listitem">
<p class="para">
A 32bit IPv4, or 128bit IPv6 address.
</p>
</dd>
</dl>
<p>
</p>
</div>
<a name="function.inet-ntop.returnvalues"></a><div class="refsect1 returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns a string representation of the address or <b><tt class="constant">FALSE</tt></b> on failure.
</p>
</div>
<a name="function.inet-ntop.examples"></a><div class="refsect1 examples">
<h3 class="title">Examples</h3>
<p class="para">
</p><div class="example">
<p><b>Example #1 <b>inet_ntop()</b> Example</b></p>
<div class="example-contents programlisting">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br />$packed </span><span style="color: #007700">= </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">127</span><span style="color: #007700">) . </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">) . </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">) . </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$expanded </span><span style="color: #007700">= </span><span style="color: #0000BB">inet_ntop</span><span style="color: #007700">(</span><span style="color: #0000BB">$packed</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Outputs: 127.0.0.1 */<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">$expanded</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$packed </span><span style="color: #007700">= </span><span style="color: #0000BB">str_repeat</span><span style="color: #007700">(</span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">0</span><span style="color: #007700">), </span><span style="color: #0000BB">15</span><span style="color: #007700">) . </span><span style="color: #0000BB">chr</span><span style="color: #007700">(</span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$expanded </span><span style="color: #007700">= </span><span style="color: #0000BB">inet_ntop</span><span style="color: #007700">(</span><span style="color: #0000BB">$packed</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">/* Outputs: ::1 */<br /></span><span style="color: #007700">echo </span><span style="color: #0000BB">$expanded</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
</div><p>
</p>
</div>
<a name="function.inet-ntop.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>
</tbody>
</table>
<p>
</p>
</div>
<a name="function.inet-ntop.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.long2ip.php" class="function" rel="rdfs-seeAlso">long2ip()</a> - Converts an (IPv4) Internet network address into a string in Internet standard dotted format</li>
<li class="member"><a href="function.ip2long.php" class="function" rel="rdfs-seeAlso">ip2long()</a> - Converts a string containing an (IPv4) Internet Protocol dotted address into a proper address</li>
<li class="member"><a href="function.inet-pton.php" class="function" rel="rdfs-seeAlso">inet_pton()</a> - Converts a human readable IP address to its packed in_addr representation</li>
</ul><p>
</p>
</div>
</div><?php manual_footer(); ?>
