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<title>Convert Unix timestamp to Julian Day</title>
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<h1 class="refname">unixtojd</h1>
<p class="verinfo">(PHP 4, PHP 5)</p><p class="refpurpose"><span class="refname">unixtojd</span> — <span class="dc-title">Convert Unix timestamp to Julian Day</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.unixtojd-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type">int</span> <span class="methodname"><strong>unixtojd</strong></span>
([ <span class="methodparam"><span class="type">int</span> <code class="parameter">$timestamp</code><span class="initializer"> = time()</span></span>
] )</div>
<p class="para rdfs-comment">
Return the Julian Day for a Unix <em><code class="parameter">timestamp</code></em>
(seconds since 1.1.1970), or for the current day if no
<em><code class="parameter">timestamp</code></em> is given.
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.unixtojd-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<span class="term"><em><code class="parameter">timestamp</code></em></span>
<dd>
<p class="para">
A unix timestamp to convert.
</p>
</dd>
</dt>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.unixtojd-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
A julian day number as integer.
</p>
</div>
<div class="refsect1 seealso" id="refsect1-function.unixtojd-seealso">
<h3 class="title">See Also</h3>
<p class="para">
<ul class="simplelist">
<li class="member"> <span class="function"><a href="function.jdtounix.html" class="function" rel="rdfs-seeAlso">jdtounix()</a> - Convert Julian Day to Unix timestamp</span></li>
</ul>
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