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<title>Predefined Constants</title>
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<h1>Predefined Constants</h1>
<p class="para">
The <a href="class.datetime.html#datetime.constants.types" class="link"><em>DATE_</em>
constants</a> are defined since PHP 5.1.1 and they offer standard
date representations, which can be used along with the date format functions
(like <span class="function"><a href="function.date.html" class="function">date()</a></span>).
</p>
<p class="para">
Following constants exists since PHP 5.1.2 and specify a format returned by
functions <span class="function"><a href="function.date-sunrise.html" class="function">date_sunrise()</a></span> and
<span class="function"><a href="function.date-sunset.html" class="function">date_sunset()</a></span>.
</p>
<dl>
<dt id="constant.sunfuncs-ret-timestamp">
<span class="term">
<strong><code>SUNFUNCS_RET_TIMESTAMP</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Timestamp
</span>
</dd>
</dt>
<dt id="constant.sunfuncs-ret-string">
<span class="term">
<strong><code>SUNFUNCS_RET_STRING</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Hours:minutes (example: 08:02)
</span>
</dd>
</dt>
<dt id="constant.sunfuncs-ret-double">
<span class="term">
<strong><code>SUNFUNCS_RET_DOUBLE</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</span>
<dd>
<span class="simpara">
Hours as floating point number (example 8.75)
</span>
</dd>
</dt>
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