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<title>Construct a new UTCDateTime</title>
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<h1 class="refname">MongoDB\BSON\UTCDateTime::__construct</h1>
<p class="verinfo">(mongodb >=1.0.0)</p><p class="refpurpose"><span class="refname">MongoDB\BSON\UTCDateTime::__construct</span> — <span class="dc-title">Construct a new UTCDateTime</span></p>
</div>
<div class="refsect1 description" id="refsect1-mongodb-bson-utcdatetime.construct-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="modifier">final</span> <span class="modifier">public</span> <span class="methodname"><strong>MongoDB\BSON\UTCDateTime::__construct</strong></span>
([ <span class="methodparam"><span class="type"><span class="type integer|float|string|DateTimeInterface">integer|float|string|DateTimeInterface</span></span> <code class="parameter">$milliseconds</code><span class="initializer"> = <strong><code>NULL</code></strong></span></span>
] )</div>
</div>
<div class="refsect1 parameters" id="refsect1-mongodb-bson-utcdatetime.construct-parameters">
<h3 class="title">Parameters</h3>
<dl>
<dt>
<code class="parameter">milliseconds</code> (<span class="type"><span class="type integer|float|string|DateTimeInterface">integer|float|string|DateTimeInterface</span></span>)</dt>
<dd>
<p class="para">
Number of milliseconds since the Unix epoch (Jan 1, 1970). Negative values
represent dates before 1970. This value may be provided as a 64-bit
<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>. For compatibility on 32-bit systems, this parameter
may also be provided as a <span class="type"><a href="language.types.float.html" class="type float">float</a></span> or <span class="type"><a href="language.types.string.html" class="type string">string</a></span>.
</p>
<p class="para">
If the argument is a <a href="class.datetimeinterface.html" class="classname">DateTimeInterface</a>, the number
of milliseconds since the Unix epoch will be derived from that value.
Note that in versions of PHP versions before 7.1.0,
<a href="class.datetime.html" class="classname">DateTime</a> and
<a href="class.datetimeimmutable.html" class="classname">DateTimeImmutable</a> objects constructed from the
current time
<a href="migration71.incompatible.html#migration71.incompatible.datetime-microseconds" class="link">did not
incorporate sub-second precision</a>.
</p>
<p class="para">
If this argument is <strong><code>NULL</code></strong>, the current time will be used by default.
</p>
</dd>
</dl>
</div>
<div class="refsect1 errors" id="refsect1-mongodb-bson-utcdatetime.construct-errors">
<h3 class="title">Errors/Exceptions</h3>
<ul class="simplelist">
<li class="member">Throws <a href="class.mongodb-driver-exception-invalidargumentexception.html" class="classname">MongoDB\Driver\Exception\InvalidArgumentException</a> on argument parsing errors.</li>
</ul>
</div>
<div class="refsect1 changelog" id="refsect1-mongodb-bson-utcdatetime.construct-changelog">
<h3 class="title">Changelog</h3>
<p class="para">
<table class="doctable informaltable">
<thead>
<tr>
<th>Version</th>
<th>Description</th>
</tr>
</thead>
<tbody class="tbody">
<tr>
<td>1.2.0</td>
<td>
<p class="para">
The <code class="parameter">milliseconds</code> argument is optional and
defaults to <strong><code>NULL</code></strong> (i.e. current time). The argument also accepts a
<a href="class.datetimeinterface.html" class="classname">DateTimeInterface</a>, which may be used to derive
the number of milliseconds since the Unix epoch. Previously, only
<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>, <span class="type"><a href="language.types.float.html" class="type float">float</a></span>, and <span class="type"><a href="language.types.string.html" class="type string">string</a></span> types
were accepted.
</p>
</td>
</tr>
</tbody>
</table>
</p>
</div>
<div class="refsect1 examples" id="refsect1-mongodb-bson-utcdatetime.construct-examples">
<h3 class="title">Examples</h3>
<div class="example" id="example-1779">
<p><strong>Example #1 <span class="function"><strong>MongoDB\BSON\UTCDateTime::__construct()</strong></span> example</strong></p>
<div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB"><?php<br /><br />var_dump</span><span style="color: #007700">(new </span><span style="color: #0000BB">MongoDB</span><span style="color: #007700">\</span><span style="color: #0000BB">BSON</span><span style="color: #007700">\</span><span style="color: #0000BB">UTCDateTime</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(new </span><span style="color: #0000BB">MongoDB</span><span style="color: #007700">\</span><span style="color: #0000BB">BSON</span><span style="color: #007700">\</span><span style="color: #0000BB">UTCDateTime</span><span style="color: #007700">(new </span><span style="color: #0000BB">DateTime</span><span style="color: #007700">));<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(new </span><span style="color: #0000BB">MongoDB</span><span style="color: #007700">\</span><span style="color: #0000BB">BSON</span><span style="color: #007700">\</span><span style="color: #0000BB">UTCDateTime</span><span style="color: #007700">(</span><span style="color: #0000BB">1416445411987</span><span style="color: #007700">));<br /><br /></span><span style="color: #0000BB">?></span>
</span>
</code></div>
</div>
<div class="example-contents"><p>The above example will output
something similar to:</p></div>
<div class="example-contents screen">
<div class="cdata"><pre>
object(MongoDB\BSON\UTCDateTime)#1 (1) {
["milliseconds"]=>
string(13) "1484852905560"
}
object(MongoDB\BSON\UTCDateTime)#1 (1) {
["milliseconds"]=>
string(13) "1484852905560"
}
object(MongoDB\BSON\UTCDateTime)#1 (1) {
["milliseconds"]=>
string(13) "1416445411987"
}
</pre></div>
</div>
</div>
</div>
<div class="refsect1 seealso" id="refsect1-mongodb-bson-utcdatetime.construct-seealso">
<h3 class="title">See Also</h3>
<ul class="simplelist">
<li class="member"><a href="https://docs.mongodb.com/manual/reference/bson-types/#date" class="link external">» BSON Types: Date</a></li>
</ul>
</div>
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