<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Converts from a supported calendar to Julian Day Count</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.cal-info.html">cal_info</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.easter-date.html">easter_date</a></div> <div class="up"><a href="ref.calendar.html">Calendar Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="function.cal-to-jd" class="refentry"> <div class="refnamediv"> <h1 class="refname">cal_to_jd</h1> <p class="verinfo">(PHP 4 >= 4.1.0, PHP 5)</p><p class="refpurpose"><span class="refname">cal_to_jd</span> — <span class="dc-title">Converts from a supported calendar to Julian Day Count</span></p> </div> <div class="refsect1 description" id="refsect1-function.cal-to-jd-description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><strong>cal_to_jd</strong></span> ( <span class="methodparam"><span class="type">int</span> <code class="parameter">$calendar</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$month</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$day</code></span> , <span class="methodparam"><span class="type">int</span> <code class="parameter">$year</code></span> )</div> <p class="para rdfs-comment"> <span class="function"><strong>cal_to_jd()</strong></span> calculates the Julian day count for a date in the specified <em><code class="parameter">calendar</code></em>. Supported <em><code class="parameter">calendar</code></em>s are <strong><code>CAL_GREGORIAN</code></strong>, <strong><code>CAL_JULIAN</code></strong>, <strong><code>CAL_JEWISH</code></strong> and <strong><code>CAL_FRENCH</code></strong>. </p> </div> <div class="refsect1 parameters" id="refsect1-function.cal-to-jd-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><em><code class="parameter">calendar</code></em></span> <dd> <p class="para"> Calendar to convert from, one of <strong><code>CAL_GREGORIAN</code></strong>, <strong><code>CAL_JULIAN</code></strong>, <strong><code>CAL_JEWISH</code></strong> or <strong><code>CAL_FRENCH</code></strong>. </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">month</code></em></span> <dd> <p class="para"> The month as a number, the valid range depends on the <em><code class="parameter">calendar</code></em> </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">day</code></em></span> <dd> <p class="para"> The day as a number, the valid range depends on the <em><code class="parameter">calendar</code></em> </p> </dd> </dt> <dt> <span class="term"><em><code class="parameter">year</code></em></span> <dd> <p class="para"> The year as a number, the valid range depends on the <em><code class="parameter">calendar</code></em> </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.cal-to-jd-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> A Julian Day number. </p> </div> <div class="refsect1 seealso" id="refsect1-function.cal-to-jd-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"> <span class="function"><a href="function.cal-from-jd.html" class="function" rel="rdfs-seeAlso">cal_from_jd()</a> - Converts from Julian Day Count to a supported calendar</span></li> <li class="member"> <span class="function"><a href="function.frenchtojd.html" class="function" rel="rdfs-seeAlso">frenchtojd()</a> - Converts a date from the French Republican Calendar to a Julian Day Count</span></li> <li class="member"> <span class="function"><a href="function.gregoriantojd.html" class="function" rel="rdfs-seeAlso">gregoriantojd()</a> - Converts a Gregorian date to Julian Day Count</span></li> <li class="member"> <span class="function"><a href="function.jewishtojd.html" class="function" rel="rdfs-seeAlso">jewishtojd()</a> - Converts a date in the Jewish Calendar to Julian Day Count</span></li> <li class="member"> <span class="function"><a href="function.juliantojd.html" class="function" rel="rdfs-seeAlso">juliantojd()</a> - Converts a Julian Calendar date to Julian Day Count</span></li> <li class="member"> <span class="function"><a href="function.unixtojd.html" class="function" rel="rdfs-seeAlso">unixtojd()</a> - Convert Unix timestamp to Julian Day</span></li> </ul> </p> </div> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.cal-info.html">cal_info</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.easter-date.html">easter_date</a></div> <div class="up"><a href="ref.calendar.html">Calendar Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>