function.gmp-init.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>Create GMP number</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-hamdist.html">gmp_hamdist</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.gmp-intval.html">gmp_intval</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-init" class="refentry"> <div class="refnamediv"> <h1 class="refname">gmp_init</h1> <p class="verinfo">(PHP 4 >= 4.0.4, PHP 5)</p><p class="refpurpose"><span class="refname">gmp_init</span> — <span class="dc-title">Create GMP number</span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">resource</span> <span class="methodname"><b><b>gmp_init</b></b></span> ( <span class="methodparam"><span class="type"><a href="language.pseudo-types.html#language.types.mixed" class="type mixed">mixed</a></span> <tt class="parameter">$number</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$base</tt></span> ] )</div> <p class="para rdfs-comment"> Creates a GMP number from an integer or string. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">number</tt></i></span> <dd> <p class="para"> An integer or a string. The string representation can be decimal, hexadecimal or octal. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">base</tt></i></span> <dd> <p class="para"> The base. Defaults to 0. </p> <p class="para"> The base may vary from 2 to 36. If base is 0 (default value), the actual base is determined from the leading characters: if the first two characters are <i>0x</i> or <i>0X</i>, hexadecimal is assumed, otherwise if the first character is "0", octal is assumed, otherwise decimal is assumed. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> A GMP number <a href="language.types.resource.html" class="type resource">resource</a>. </p> </div> <div class="refsect1 changelog"> <h3 class="title">ChangeLog</h3> <p class="para"> <table class="informaltable"> <colgroup> <thead valign="middle"> <tr valign="middle"> <th colspan="1">Version</th> <th colspan="1">Description</th> </tr> </thead> <tbody valign="middle" class="tbody"> <tr valign="middle"> <td colspan="1" rowspan="1" align="left">4.1.0</td> <td colspan="1" rowspan="1" align="left"> The optional <i><tt class="parameter">base</tt></i> parameter was added. </td> </tr> </tbody> </colgroup> </table> </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example"> <p><b>Example #1 Creating GMP number</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><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></span></code></div> </div> </div> </p> </div> <div class="refsect1 notes"> <h3 class="title">Notes</h3> <blockquote><p><b class="note">Note</b>: It is not necessary to call this function if you want to use integer or string in place of GMP number in GMP functions, like <a href="function.gmp-add.html" class="function">gmp_add()</a>. Function arguments are automatically converted to GMP numbers, if such conversion is possible and needed, using the same rules as <b>gmp_init()</b>. <br /> </p></blockquote> </div> </div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="function.gmp-hamdist.html">gmp_hamdist</a></div> <div class="next" style="text-align: right; float: right;"><a href="function.gmp-intval.html">gmp_intval</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>⌨️ 快捷键说明
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