mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-17 21:16:57 +08:00
99 lines
4.4 KiB
HTML
99 lines
4.4 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<title>Perfect square check</title>
|
|
</head>
|
|
<body class="docs"><div id="layout">
|
|
<div id="layout-content"><div id="function.gmp-perfect-square" class="refentry">
|
|
<div class="refnamediv">
|
|
<h1 class="refname">gmp_perfect_square</h1>
|
|
<p class="verinfo">(PHP 4 >= 4.0.4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">gmp_perfect_square</span> — <span class="dc-title">Perfect square check</span></p>
|
|
|
|
</div>
|
|
|
|
<div class="refsect1 description" id="refsect1-function.gmp-perfect-square-description">
|
|
<h3 class="title">说明</h3>
|
|
<div class="methodsynopsis dc-description">
|
|
<span class="methodname"><strong>gmp_perfect_square</strong></span>
|
|
( <span class="methodparam"><span class="type"><a href="class.gmp.html" class="type GMP">GMP</a></span> <code class="parameter">$a</code></span>
|
|
) : <span class="type">bool</span></div>
|
|
|
|
<p class="para rdfs-comment">
|
|
Check if a number is a perfect square.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 parameters" id="refsect1-function.gmp-perfect-square-parameters">
|
|
<h3 class="title">参数</h3>
|
|
<p class="para">
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">a</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
The number being checked as a perfect square.
|
|
</p>
|
|
<p class="para">可以是一个 GMP
|
|
数据 <span class="type"><span class="type resouce">resouce</span></span>，或一个可以转换为数值的字符串。</p>
|
|
</dd>
|
|
|
|
|
|
</dl>
|
|
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 returnvalues" id="refsect1-function.gmp-perfect-square-returnvalues">
|
|
<h3 class="title">返回值</h3>
|
|
<p class="para">
|
|
Returns <strong><code>TRUE</code></strong> if <code class="parameter">a</code> is a perfect square,
|
|
<strong><code>FALSE</code></strong> otherwise.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 examples" id="refsect1-function.gmp-perfect-square-examples">
|
|
<h3 class="title">范例</h3>
|
|
<p class="para">
|
|
<div class="example" id="example-4088">
|
|
<p><strong>Example #1 <span class="function"><strong>gmp_perfect_square()</strong></span> example</strong></p>
|
|
<div class="example-contents">
|
|
<div class="phpcode"><pre><span style="color: #000000">
|
|
<span style="color: #0000BB"><?php<br /></span><span style="color: #FF8000">// 3 * 3, perfect 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">// not a perfect 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">// 1234567890 * 1234567890, perfect 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">?></span>
|
|
</span>
|
|
</pre></div>
|
|
</div>
|
|
|
|
<div class="example-contents"><p>以上例程会输出：</p></div>
|
|
<div class="example-contents screen">
|
|
<div class="cdata"><pre>
|
|
bool(true)
|
|
bool(false)
|
|
bool(true)
|
|
</pre></div>
|
|
</div>
|
|
</div>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<div class="refsect1 seealso" id="refsect1-function.gmp-perfect-square-seealso">
|
|
<h3 class="title">参见</h3>
|
|
<p class="para">
|
|
<ul class="simplelist">
|
|
<li class="member"><span class="function"><a href="gmp_perfect_power.html" class="function" rel="rdfs-seeAlso">gmp_perfect_power()</a> - Perfect power check</span></li>
|
|
<li class="member"><span class="function"><a href="gmp_sqrt.html" class="function" rel="rdfs-seeAlso">gmp_sqrt()</a> - Calculate square root</span></li>
|
|
<li class="member"><span class="function"><a href="gmp_sqrtrem.html" class="function" rel="rdfs-seeAlso">gmp_sqrtrem()</a> - Square root with remainder</span></li>
|
|
</ul>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
</div></div></div></body></html> |