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?>
<div id="function.tanh" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">tanh</h1>
  <p class="verinfo">(PHP 4 &gt;= 4.1.0, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">tanh</span> &mdash; <span class="dc-title">Hyperbolic tangent</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.tanh-description">
  <h3 class="title">Description</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>tanh</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.float.php" class="type float">float</a></span> <code class="parameter">$num</code></span>): <span class="type"><a href="language.types.float.php" class="type float">float</a></span></div>

  <p class="para rdfs-comment">
   Returns the hyperbolic tangent of <code class="parameter">num</code>,
   defined as <code class="literal">sinh($num)/cosh($num)</code>.
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-function.tanh-parameters">
  <h3 class="title">Parameters</h3>
  <p class="para">
   <dl>
    
     <dt><code class="parameter">num</code></dt>
     <dd>
      <p class="para">
       The argument to process
      </p>
     </dd>
    
   </dl>
  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-function.tanh-returnvalues">
  <h3 class="title">Return Values</h3>
  <p class="para">
   The hyperbolic tangent of <code class="parameter">num</code>
  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-function.tanh-seealso">
  <h3 class="title">See Also</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="function"><a href="function.tan.php" class="function" rel="rdfs-seeAlso">tan()</a> - Tangent</span></li>
    <li><span class="function"><a href="function.atanh.php" class="function" rel="rdfs-seeAlso">atanh()</a> - Inverse hyperbolic tangent</span></li>
    <li><span class="function"><a href="function.sinh.php" class="function" rel="rdfs-seeAlso">sinh()</a> - Hyperbolic sine</span></li>
    <li><span class="function"><a href="function.cosh.php" class="function" rel="rdfs-seeAlso">cosh()</a> - Hyperbolic cosine</span></li>
   </ul>
  </p>
 </div>

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