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<title>Calculates binomial coefficient</title>
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<h1 class="refname">gmp_binomial</h1>
<p class="verinfo">(PHP 7 >= 7.3.0)</p><p class="refpurpose"><span class="refname">gmp_binomial</span> — <span class="dc-title">Calculates binomial coefficient</span></p>
</div>
<div class="refsect1 description" id="refsect1-function.gmp-binomial-description">
<h3 class="title">Description</h3>
<div class="methodsynopsis dc-description">
<span class="type"><a href="class.gmp.html" class="type GMP">GMP</a></span> <span class="methodname"><strong>gmp_binomial</strong></span>
( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$n</code></span>
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$k</code></span>
)</div>
<p class="para rdfs-comment">
Calculates the binomial coefficient C(n, k).
</p>
</div>
<div class="refsect1 parameters" id="refsect1-function.gmp-binomial-parameters">
<h3 class="title">Parameters</h3>
<p class="para">
<dl>
<dt>
<code class="parameter">n</code></dt>
<dd>
<p class="para">Either a GMP number <span class="type"><a href="language.types.resource.html" class="type resource">resource</a></span> in PHP 5.5 and earlier, a <a href="class.gmp.html" class="classname">GMP</a> object in PHP 5.6 and later, or a numeric string provided that it is possible to convert the latter to a number.</p>
</dd>
<dt>
<code class="parameter">k</code></dt>
<dd>
<p class="para">
</p>
</dd>
</dl>
</p>
</div>
<div class="refsect1 returnvalues" id="refsect1-function.gmp-binomial-returnvalues">
<h3 class="title">Return Values</h3>
<p class="para">
Returns the binomial coefficient C(n, k), or <strong><code>FALSE</code></strong> on failure.
</p>
</div>
<div class="refsect1 errors" id="refsect1-function.gmp-binomial-errors">
<h3 class="title">Errors/Exceptions</h3>
<p class="para">
Issues E_WARNING if <code class="parameter">k</code> is negative.
</p>
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