|
本文实例讲述了PHP进制转换。分享给大家供大家参考，具体如下：
可以实现：
10进制转换2、8、16、36、62进制
2、8、16、36、62进制转换10进制
有点要注意下，2、8、16进制转换时，使用的是系统的自己的函数。
所以，不管怎么高精度转换值可能大于2147483646。
另外，
32进制低精转换，最大值：2147483646；
32进制高精转换，最大值：77309411327；
64进制高精转换，最大值：133143986175。
jinzhi.php文件，自带演示功能。
进制转换/title>
</head>
<body>
<form id="jzh" name="jinzhih" method="post" action="">
<input name="go" type="hidden" value="100">
<table width="482" border="1" cellpadding="0" cellspacing="0" bordercolor="#FFE8E8" bgcolor="#F4F8FB">
<tr>
<td width="194"><select name="jinzhi0" id="jinzhi0">
<option value="2">2</option>
<option value="8">8</option>
<option value="10" selected="selected">10</option>
<option value="16">16</option>
<option value="36">36</option>
<option value="62">62</option>
</select>
进制</td>
<td width="275"><input name="zhi" type="text" id="zhi" /></td>
</tr>
<tr>
<td>进行<input name="lx" type="radio" value="0" checked="checked" />
普通<input type="radio" name="lx" value="1" />高精</td><td> </td>
</tr>
<tr>
<td>转换为
<select name="jinzhi1" id="jinzhi1">
<option value="2" selected="selected">2</option>
<option value="8">8</option>
<option value="10">10</option>
<option value="16">16</option>
<option value="36">36</option>
<option value="62">62</option>
</select>进制，</td><td>总长度为
<input name="changdu" type="text" id="changdu" value="10" size="4" maxlength="2" />
字符。</td></tr><tr>
<td><input type="submit" name="Submit" value="提交" /></td>
<td><input type="reset" name="Submit2" value="重置" /></td>
</tr></table>
<p>注意：仅能进行10进制转换为2、8、16、36、62进制；或反转换。</p></form>
<?php
class jinzhi_class
{
//10进制转2、8、16、36、62进制
function jinzhih_0($shu,$jinzhi,$w)
{
$zifu = "";
while ($shu!=0){
$linshi = $shu%$jinzhi;
switch ($jinzhi){
case 2:
$zifu = decbin($shu);
return $zifu;
case 8:
$zifu = decoct($shu);
return $zifu;
case 16:
$zifu = dechex($shu);
return $zifu;
case 36:
if ($linshi>=10)
{
$zifu.= chr(($linshi+55));
}else{
$zifu.= $linshi;}
break;
case 62:
if (($linshi>=10) && ($linshi36)) {$zifu.= chr($linshi+55);break;}
if (($linshi>=36) && ($linshi62)) {$zifu.= chr($linshi+61);break;}
$zifu.= $linshi;break;
default:
$zifu.= $linshi;
break;
}
$shu = intval($shu/$jinzhi);
}
for ($i=strlen($zifu);$i$w;$i++)
$zifu.="0";
return strrev($zifu);}
//2、8、16、36、62进制转10进制
function jinzhih_1($zifu,$w)
{ $shu=0;
for ($i=0;$i=strlen($zifu)-1;$i++)
{
$linshi = substr($zifu,$i,1);
switch ($jinzhi){
case 2:
$shu = bindec($zifu);
$i=strlen($zifu)+1;
break;
case 8:
$shu = octdec($zifu);
$i=strlen($zifu)+1;
break;
case 16:
$shu = hexdec($zifu);
$i=strlen($zifu)+1;
break;
case 36:
if (ord($linshi)=57)
{$shu+=(ord($linshi)-48)*pow($jinzhi,strlen($zifu)-$i-1);
}else{
$shu=$shu + (ord($linshi)-55)*pow($jinzhi,strlen($zifu)-$i-1);}
break;
case 62:
if (ord($linshi)=57)
{$shu+=$linshi*pow($jinzhi,strlen($zifu)-$i-1);
}elseif ((ord($linshi)>=65) && (ord($linshi)=90)){
$shu+= (ord($linshi)-55)*pow($jinzhi,strlen($zifu)-$i-1);
}else{
$shu+= (ord($linshi)-61)*pow($jinzhi,strlen($zifu)-$i-1);}
break;
}
}
return $shu;
}
//10进制高精度转换2、8、16、36、62进制
function jinzhih_G0($shu,$w)
{
$zifu = "";
while ($shu!=0){
$linshi = bcmod($shu,$jinzhi);
switch ($jinzhi){
case 2:
$zifu = decbin($shu);
return $zifu;
case 8:
$zifu = decoct($shu);
return $zifu;
case 16:
$zifu = dechex($shu);
return $zifu;
case 36:
if ($linshi>=10)
{
$zifu.= chr(($linshi+55));
}else{
$zifu.= $linshi;}
break;
case 62:
if (($linshi>=10) && ($linshi36)) {$zifu.= chr($linshi+55);break;}
if (($linshi>=36) && ($linshi62)) {$zifu.= chr($linshi+61);break;}
$zifu.= $linshi;break;
default:
$zifu.= $linshi;
break;
}
$shu = intval(bcdiv($shu,$jinzhi));
}
for ($i=strlen($zifu);$i$w;$i++)
$zifu.="0";
return strrev($zifu);}
//2、8、16、36、62进制高精度转换10进制
function jinzhih_G1($zifu,$w)
{ $shu= "";
for ($i=0;$i=strlen($zifu)-1;$i++)
{
$linshi = substr($zifu,1);
switch ($jinzhi){
case 2:
$shu = bindec($zifu);
$i=strlen($zifu)+1;
break;
case 8:
$shu = octdec($zifu);
$i=strlen($zifu)+1;
break;
case 16:
$shu = hexdec($zifu);
$i=strlen($zifu)+1;
break;
case 36:
if (ord($linshi)=57)
{$shu=bcadd($shu,bcmul((ord($linshi)-48),bcpow($jinzhi,strlen($zifu)-$i-1)));
}else{
$shu=bcadd($shu,bcmul((ord($linshi)-55),strlen($zifu)-$i-1)));}
break;
case 62:
if (ord($linshi)=57)
{$shu=bcadd($shu,bcmul($linshi,strlen($zifu)-$i-1)));
}elseif ((ord($linshi)>=65) && (ord($linshi)=90)){
$shu=bcadd($shu,strlen($zifu)-$i-1)));
}else{
$shu=bcadd($shu,bcmul((ord($linshi)-61),strlen($zifu)-$i-1)));
}
break;
}
}
return $shu;}
}
if (isset($_GET["p"]))
{if ($_GET["p"]==="1"){
echo "";
echo "提示：
";
echo "32进制低精转换，最大值：2147483646
";
echo "32进制高精转换，最大值：77309411327
";
echo "64进制高精转换，最大值：133143986175
";
echo "";
echo "值为：";
$Fs = new jinzhi_class();
if ($_POST['lx']=="0" && $_POST['jinzhi0']=="10")
{echo $Fs->jinzhih_0($_POST['zhi'],$_POST['jinzhi1'],$_POST['changdu'])."
";}
if ($_POST['lx']=="1" && $_POST['jinzhi0']=="10")
{echo $Fs->jinzhih_G0($_POST['zhi'],$_POST['changdu']);}
if ($_POST['lx']=="0" && $_POST['jinzhi0']>"10")
{echo $Fs->jinzhih_1($_POST['zhi'],$_POST['jinzhi0'],$_POST['changdu']);}
if ($_POST['lx']=="1" && $_POST['jinzhi0']>"10")
{echo $Fs->jinzhih_G1($_POST['zhi'],$_POST['changdu']);}
}
echo "";}
$mtime1 = explode(" ",microtime());
$endTime = $mtime1[0] + $mtime1[1];
printf ("页面执行时间：%.6fs.",$endTime-$startTime);
?></pre>
<p>PS：这里再为大家推荐几款计算与转换工具供大家参考使用：</h3></p>
<p>在线任意进制转换工具：
</h3></p>
<p>科学计算器在线使用_高级计算器在线计算：
</h3></p>
<p>在线计算器_标准计算器：
</h3></p>
<p>更多关于PHP相关内容感兴趣的读者可查看本站专题：《》、《》、《》、《》、《》、《》及《》</p>
<p>希望本文所述对大家PHP程序设计有所帮助。</p></p></p></p> <p style="text-align:right;">（编辑：甘南站长网）</p>
<p style="text-align:right;">【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!</p>
</td>
</tr>
</table>
</div>
<div class="dede_pagess"><ul class="pagelist"></ul></div>
<div class="ad-690"><script src='https://ess.0577qiche.com/d/js/acmsd/ad76.js' language='javascript'></script></div>
<div class="g-box10">
<div class="t-2">相关内容</div>
<ul class="b-box12"></ul>
<ul class="b-box13"><li><a href="https://www.0941zz.com/html/kaifa/PHP/20210124/15893.html" target="_blank">PHP自定义函数获取汉字首字母的方法</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20210111/14023.html" target="_blank">详解PHP安装mysql.so扩展的方法</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20201117/10488.html" target="_blank">PHP实现表单提交数据的验证处理功能【防SQL注入和XSS攻击等</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20210111/14033.html" target="_blank">PHP搭建大文件切割分块上传功能示例</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20201231/13828.html" target="_blank">PHP中对汉字进行unicode编码和解码的实现方法(必看)</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20201205/12275.html" target="_blank">PHP实现ASCII码与字符串相互转换的方法</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20201205/11869.html" target="_blank">Laravel中任务调度console使用方法小结</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20210330/16849.html" target="_blank">php 使用redis锁限制并发访问类示例</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20201230/12951.html" target="_blank">PHP面相对象中的重载与重写</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20200901/9066.html" target="_blank">PHP学习：form自动提交实例讲解</a></li><div class="cl"></div></ul>
</div>
</div>
</div>
<div class="right-1 fr">
<div class="g-box8">
<div class="t-2">推荐文章</div>
<ul></ul>
</div>
<div class="g-box11">
<div class="t-2">站长推荐</div>
<ul class="b-box7"><li><a href="https://www.0941zz.com/html/kaifa/PHP/20201230/12957.html" target="_blank">PHP实现对数组分页处理实例详解</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20210112/14800.html" target="_blank">php加密之discuz内容经典加密方式实例详解</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20201215/12299.html" target="_blank">PHP中快速生成随机密码的几种方式</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20201205/12276.html" target="_blank">PHP 序列化和反序列化函数实例详解</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20200901/9071.html" target="_blank">PHP的魔术方法__call在子类上</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20201231/13779.html" target="_blank">利用php生成验证码</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20210330/16859.html" target="_blank">关于PHP中字符串与多进制转换函数的实例代码</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20210117/15238.html" target="_blank">phalcon model在插入或更新时会自动验证非空字段</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20210117/15054.html" target="_blank">Zend Framework入门教程之Zend_View组件用法示例</a></li><li><a href="https://www.0941zz.com/html/kaifa/PHP/20200901/8369.html" target="_blank">php – 您应该在模型中验证吗？ (基于Symfony的问</a></li></ul>
</div>
<script type="text/javascript">jQuery(".g-box8").slide({ titCell:"li",triggerTime:0 }); </script>
<div class="ad-250"><script src='https://ess.0577qiche.com/d/js/acmsd/ad103.js' language='javascript'></script></div>
<div class="g-box3 u-3">
<div class="t-1">热点阅读</div>
<ul class="b-box2"></ul>
</div>
<div class="ad-250"><script src='https://ess.0577qiche.com/d/js/acmsd/ad77.js' language='javascript'></script></div>
</div>
<div class="cl"></div>
</div>
<div class="ad-960"><script src='https://ess.0577qiche.com/d/js/acmsd/ad78.js' language='javascript'></script></div>
<div class="footer">
<p>【免责声明】本站内容转载自互联网，其发布内容言论不代表本站观点，如果其链接、内容的侵犯您的权益，烦请提交相关链接至邮箱bqsm@foxmail.com我们将及时予以处理。</p>
<p>建议您使用1920×1080分辨率、谷歌浏览器Google Chrome、Microsoft Edge以获得本站的非凡浏览效果</p>
<p>Copygight © 2018-2023 https://www.0941zz.com/ All Rights Reserved. 甘南站长网</p>
<p><script charset="UTF-8" id="LA_COLLECT" src="//sdk.51.la/js-sdk-pro.min.js"></script><script>LA.init({id:"1zy1wryLsx3mjs1Y",ck:"1zy1wryLsx3mjs1Y"})</script><a target="_blank" title="51la网站统计" href="https://v6.51.la/land/1zy1wryLsx3mjs1Y"><img src="https://sdk.51.la/icon/3-1.png"></a></p>
</div>
</body>
</html> |
