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152 lines
5.0 KiB
HTML
152 lines
5.0 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Create GMP number</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.gmp-init" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">gmp_init</h1>
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<p class="verinfo">(PHP 4 >= 4.0.4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">gmp_init</span> — <span class="dc-title">Create GMP number</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.gmp-init-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>gmp_init</strong></span>
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( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <code class="parameter">$number</code></span>
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[, <span class="methodparam"><span class="type">int</span> <code class="parameter">$base</code><span class="initializer"> = 0</span></span>
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] ) : <span class="type"><a href="class.gmp.html" class="type GMP">GMP</a></span></div>
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<p class="para rdfs-comment">
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Creates a GMP number from an integer or string.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.gmp-init-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">number</code></dt>
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<dd>
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<p class="para">
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An integer or a string. The string representation can be decimal,
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hexadecimal or octal.
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</p>
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</dd>
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<dt>
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<code class="parameter">base</code></dt>
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<dd>
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<p class="para">
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The base.
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</p>
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<p class="para">
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The base may vary from 2 to 36. If base is 0 (default value), the
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actual base is determined from the leading characters: if the first
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two characters are <em>0x</em> or <em>0X</em>,
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hexadecimal is assumed, otherwise if the first character is "0",
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octal is assumed, otherwise decimal is assumed.
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.gmp-init-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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GMP 数值<span class="type"><span class="type 资源">资源</span></span>.
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</p>
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</div>
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<div class="refsect1 changelog" id="refsect1-function.gmp-init-changelog">
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<h3 class="title">更新日志</h3>
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<p class="para">
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<table class="doctable informaltable">
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<thead>
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<tr>
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<th>版本</th>
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<th>说明</th>
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</tr>
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</thead>
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<tbody class="tbody">
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<tr>
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<td>5.3.2</td>
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<td>
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The <code class="parameter">base</code> was extended from 2 to 36, to
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2 to 62 and -2 to -36.
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</td>
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</tr>
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</tbody>
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</table>
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.gmp-init-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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To use the extended base introduced in PHP 5.3.2, then
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PHP must be compiled against GMP 4.2.0 or greater.
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</p>
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</p></blockquote>
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</div>
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<div class="refsect1 examples" id="refsect1-function.gmp-init-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-4078">
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<p><strong>Example #1 Creating GMP number</strong></p>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$a </span><span style="color: #007700">= </span><span style="color: #0000BB">gmp_init</span><span style="color: #007700">(</span><span style="color: #0000BB">123456</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$b </span><span style="color: #007700">= </span><span style="color: #0000BB">gmp_init</span><span style="color: #007700">(</span><span style="color: #DD0000">"0xFFFFDEBACDFEDF7200"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 notes" id="refsect1-function.gmp-init-notes">
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<h3 class="title">注释</h3>
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<blockquote class="note"><p><strong class="note">Note</strong>:
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<p class="para">
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It is not necessary to call this function in order to use integers or
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strings in place of GMP numbers in GMP functions (such as with
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<span class="function"><a href="gmp_add.html" class="function">gmp_add()</a></span>). Function arguments are automatically
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converted to GMP numbers, if such conversion is possible and needed, using
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the same rules as <span class="function"><strong>gmp_init()</strong></span>.
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</p>
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</p></blockquote>
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</div>
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</div></div></div></body></html> |