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<h1>Predefined Constants</h1>
<p class="simpara">
The constants below are defined by this extension, and
will only be available when the extension has either
been compiled into PHP or dynamically loaded at runtime.
</p>
<dl>
<dt id="constant.cal-easter-default">
<strong><code>CAL_EASTER_DEFAULT</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.easter-days.html" class="function">easter_days()</a></span>: calculate Easter for years before
1753 according to the Julian calendar, and for later years according to the
Gregorian calendar.
</span>
</dd>
<dt id="constant.cal-easter-roman">
<strong><code>CAL_EASTER_ROMAN</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.easter-days.html" class="function">easter_days()</a></span>: calculate Easter for years before
1583 according to the Julian calendar, and for later years according to the
Gregorian calendar.
</span>
</dd>
<dt id="constant.cal-easter-always-gregorian">
<strong><code>CAL_EASTER_ALWAYS_GREGORIAN</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.easter-days.html" class="function">easter_days()</a></span>: calculate Easter according to the
proleptic Gregorian calendar.
</span>
</dd>
<dt id="constant.cal-easter-always-julian">
<strong><code>CAL_EASTER_ALWAYS_JULIAN</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.easter-days.html" class="function">easter_days()</a></span>: calculate Easter according to the
Julian calendar.
</span>
</dd>
<dt id="constant.cal-gregorian">
<strong><code>CAL_GREGORIAN</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.cal-days-in-month.html" class="function">cal_days_in_month()</a></span>,
<span class="function"><a href="function.cal-from-jd.html" class="function">cal_from_jd()</a></span>, <span class="function"><a href="function.cal-info.html" class="function">cal_info()</a></span> and
<span class="function"><a href="function.cal-to-jd.html" class="function">cal_to_jd()</a></span>: use the proleptic Gregorian calendar.
</span>
</dd>
<dt id="constant.cal-julian">
<strong><code>CAL_JULIAN</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.cal-days-in-month.html" class="function">cal_days_in_month()</a></span>,
<span class="function"><a href="function.cal-from-jd.html" class="function">cal_from_jd()</a></span>, <span class="function"><a href="function.cal-info.html" class="function">cal_info()</a></span> and
<span class="function"><a href="function.cal-to-jd.html" class="function">cal_to_jd()</a></span>: use the Julian calendar.
</span>
</dd>
<dt id="constant.cal-jewish">
<strong><code>CAL_JEWISH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.cal-days-in-month.html" class="function">cal_days_in_month()</a></span>,
<span class="function"><a href="function.cal-from-jd.html" class="function">cal_from_jd()</a></span>, <span class="function"><a href="function.cal-info.html" class="function">cal_info()</a></span> and
<span class="function"><a href="function.cal-to-jd.html" class="function">cal_to_jd()</a></span>: use the Jewish calendar.
</span>
</dd>
<dt id="constant.cal-french">
<strong><code>CAL_FRENCH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.cal-days-in-month.html" class="function">cal_days_in_month()</a></span>,
<span class="function"><a href="function.cal-from-jd.html" class="function">cal_from_jd()</a></span>, <span class="function"><a href="function.cal-info.html" class="function">cal_info()</a></span> and
<span class="function"><a href="function.cal-to-jd.html" class="function">cal_to_jd()</a></span>: use the French Repuclican calendar.
</span>
</dd>
<dt id="constant.cal-num-cals">
<strong><code>CAL_NUM_CALS</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
The number of available calendars.
</span>
</dd>
<dt id="constant.cal-jewish-add-alafim-geresh">
<strong><code>CAL_JEWISH_ADD_ALAFIM_GERESH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jdtojewish.html" class="function">jdtojewish()</a></span>: adds a geresh symbol (which resembles
a single-quote mark) as thousands separator to the year number.
</span>
</dd>
<dt id="constant.cal-jewish-add-alafim">
<strong><code>CAL_JEWISH_ADD_ALAFIM</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jdtojewish.html" class="function">jdtojewish()</a></span>: adds the word alafim as thousands
separator to the year number.
</span>
</dd>
<dt id="constant.cal-jewish-add-gereshayim">
<strong><code>CAL_JEWISH_ADD_GERESHAYIM</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jdtojewish.html" class="function">jdtojewish()</a></span>: add a gershayim symbol (which
resembles a double-quote mark) before the final letter of the day and year numbers.
</span>
</dd>
<dt id="constant.cal-dow-dayno">
<strong><code>CAL_DOW_DAYNO</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jddayofweek.html" class="function">jddayofweek()</a></span>: the day of the week as
<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>, where <em>0</em> means Sunday and
<em>6</em> means Saturday.
</span>
</dd>
<dt id="constant.cal-dow-short">
<strong><code>CAL_DOW_SHORT</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jddayofweek.html" class="function">jddayofweek()</a></span>: the abbreviated English name of the
day of the week.
</span>
</dd>
<dt id="constant.cal-dow-long">
<strong><code>CAL_DOW_LONG</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jddayofweek.html" class="function">jddayofweek()</a></span>: the English name of the day of the
week.
</span>
</dd>
<dt id="constant.cal-month-gregorian-short">
<strong><code>CAL_MONTH_GREGORIAN_SHORT</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jdmonthname.html" class="function">jdmonthname()</a></span>: the abbreviated Gregorian month name.
</span>
</dd>
<dt id="constant.cal-month-gregorian-long">
<strong><code>CAL_MONTH_GREGORIAN_LONG</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jdmonthname.html" class="function">jdmonthname()</a></span>: the Gregorian month name.
</span>
</dd>
<dt id="constant.cal-month-julian-short">
<strong><code>CAL_MONTH_JULIAN_SHORT</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jdmonthname.html" class="function">jdmonthname()</a></span>: the abbreviated Julian month name.
</span>
</dd>
<dt id="constant.cal-month-julian-long">
<strong><code>CAL_MONTH_JULIAN_LONG</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jdmonthname.html" class="function">jdmonthname()</a></span>: the Julian month name.
</span>
</dd>
<dt id="constant.cal-month-jewish">
<strong><code>CAL_MONTH_JEWISH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jdmonthname.html" class="function">jdmonthname()</a></span>: the Jewish month name.
</span>
</dd>
<dt id="constant.cal-month-french">
<strong><code>CAL_MONTH_FRENCH</code></strong>
(<span class="type"><a href="language.types.integer.html" class="type integer">integer</a></span>)
</dt>
<dd>
<span class="simpara">
For <span class="function"><a href="function.jdmonthname.html" class="function">jdmonthname()</a></span>: the French Republican month name.
</span>
</dd>
</dl>
</div>
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