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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Converts from a supported calendar to Julian Day Count</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div 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 >= 4.0.7, 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"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><b>cal_to_jd</b></b></span> ( <span class="methodparam"><span class="type">int</span> <tt class="parameter">$calendar</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$month</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$day</tt></span> , <span class="methodparam"><span class="type">int</span> <tt class="parameter">$year</tt></span> )</div> <p class="para rdfs-comment"> <b>cal_to_jd()</b> calculates the Julian day count for a date in the specified <i><tt class="parameter">calendar</tt></i>. Supported <i><tt class="parameter">calendar</tt></i>s are <b><tt>CAL_GREGORIAN</tt></b>, <b><tt>CAL_JULIAN</tt></b>, <b><tt>CAL_JEWISH</tt></b> and <b><tt>CAL_FRENCH</tt></b>. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">calendar</tt></i></span> <dd> <p class="para"> Calendar to convert from, one of <b><tt>CAL_GREGORIAN</tt></b>, <b><tt>CAL_JULIAN</tt></b>, <b><tt>CAL_JEWISH</tt></b> or <b><tt>CAL_FRENCH</tt></b>. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">month</tt></i></span> <dd> <p class="para"> The month as a number, the valid range depends on the <i><tt class="parameter">calendar</tt></i> </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">day</tt></i></span> <dd> <p class="para"> The day as a number, the valid range depends on the <i><tt class="parameter">calendar</tt></i> </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">year</tt></i></span> <dd> <p class="para"> The year as a number, the valid range depends on the <i><tt class="parameter">calendar</tt></i> </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> A Julian Day number. </p> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="function.cal-from-jd.html" class="function" rel="rdfs-seeAlso">cal_from_jd()</a></li> <li class="member"><a href="function.frenchtojd.html" class="function" rel="rdfs-seeAlso">frenchtojd()</a></li> <li class="member"><a href="function.gregoriantojd.html" class="function" rel="rdfs-seeAlso">gregoriantojd()</a></li> <li class="member"><a href="function.jewishtojd.html" class="function" rel="rdfs-seeAlso">jewishtojd()</a></li> <li class="member"><a href="function.juliantojd.html" class="function" rel="rdfs-seeAlso">juliantojd()</a></li> <li class="member"><a href="function.unixtojd.html" class="function" rel="rdfs-seeAlso">unixtojd()</a></li> </ul> </p> </div></div><hr /><div 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>⌨️ 快捷键说明
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