📄 function.gmp-perfect-square.html

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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>Perfect square check</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.gmp-or.html">gmp_or</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.gmp-popcount.html">gmp_popcount</a></div> <div class="up"><a href="ref.gmp.html">GMP Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="function.gmp-perfect-square" class="refentry"> <div class="refnamediv">  <h1 class="refname">gmp_perfect_square</h1>  <p class="verinfo">(PHP 4 &gt;= 4.0.4, PHP 5)</p><p class="refpurpose"><span class="refname">gmp_perfect_square</span> &mdash; <span class="dc-title">Perfect square check</span></p> </div>  <div class="refsect1 description">  <h3 class="title">Description</h3>  <div class="methodsynopsis dc-description">   <span class="type">bool</span> <span class="methodname"><b><b>gmp_perfect_square</b></b></span>    ( <span class="methodparam"><span class="type">resource</span> <tt class="parameter">$a</tt></span>   )</div>  <p class="para rdfs-comment">   Check if a number is a perfect square.  </p> </div> <div class="refsect1 parameters">  <h3 class="title">Parameters</h3>  <p class="para">   <dl>    <dt>     <span class="term"><i><tt class="parameter">a</tt></i></span>     <dd>      <p class="para">       The number being checked as a perfect square.      </p>      <p class="para">It can be either a GMP number <a href="language.types.resource.html" class="type resource">resource</a>, or a numeric string given that it is possible to convert the latter to a number.</p>      </dd>    </dt>   </dl>  </p> </div> <div class="refsect1 returnvalues">  <h3 class="title">Return Values</h3>  <p class="para">   Returns <b><tt>TRUE</tt></b> if <i><tt class="parameter">a</tt></i> is a perfect square,   <b><tt>FALSE</tt></b> otherwise.  </p> </div> <div class="refsect1 examples">  <h3 class="title">Examples</h3>  <p class="para">   <div class="example">    <p><b>Example #1 <b>gmp_perfect_square()</b> example</b></p>    <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">//&nbsp;3&nbsp;*&nbsp;3,&nbsp;perfect&nbsp;square<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">gmp_perfect_square</span><span style="color: #007700">(</span><span style="color: #DD0000">"9"</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">//&nbsp;not&nbsp;a&nbsp;perfect&nbsp;square<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">gmp_perfect_square</span><span style="color: #007700">(</span><span style="color: #DD0000">"7"</span><span style="color: #007700">));<br /><br /></span><span style="color: #FF8000">//&nbsp;1234567890&nbsp;*&nbsp;1234567890,&nbsp;perfect&nbsp;square<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">gmp_perfect_square</span><span style="color: #007700">(</span><span style="color: #DD0000">"1524157875019052100"</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>    </div>    <div class="example-contents"><p>The above example will output:</p></div>    <div class="example-contents"><pre><div class="cdata"><pre>bool(true)bool(false)bool(true)</pre></div>    </pre></div>   </div>  </p> </div> <div class="refsect1 seealso">  <h3 class="title">See Also</h3>  <p class="para">   <ul class="simplelist">    <li class="member"><a href="function.gmp-sqrt.html" class="function" rel="rdfs-seeAlso">gmp_sqrt()</a></li>    <li class="member"><a href="function.gmp-sqrtrem.html" class="function" rel="rdfs-seeAlso">gmp_sqrtrem()</a></li>   </ul>  </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.gmp-or.html">gmp_or</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.gmp-popcount.html">gmp_popcount</a></div> <div class="up"><a href="ref.gmp.html">GMP Functions</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>
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