这篇文章主要介绍了PHP进制转换,结合具体实例形式分析了2,8,16,36,64进制至10进制相互转换实现技巧,具有一定参考借鉴价值,需要的朋友可以参考下
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($zifu,$jinzhi,$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,$jinzhi,$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($zifu,$jinzhi,$w) { $shu= ""; for ($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=bcadd($shu,bcmul((ord($linshi)-48),bcpow($jinzhi,strlen($zifu)-$i-1))); }else{ $shu=bcadd($shu,bcmul((ord($linshi)-55),bcpow($jinzhi,strlen($zifu)-$i-1)));} break; case 62: if (ord($linshi)=57) {$shu=bcadd($shu,bcmul($linshi,bcpow($jinzhi,strlen($zifu)-$i-1))); }elseif ((ord($linshi)>=65) && (ord($linshi)=90)){ $shu=bcadd($shu,bcmul((ord($linshi)-55),bcpow($jinzhi,strlen($zifu)-$i-1))); }else{ $shu=bcadd($shu,bcmul((ord($linshi)-61),bcpow($jinzhi,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'],$_POST['jinzhi1'],$_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'],$_POST['jinzhi0'],$_POST['changdu']);} } echo "";} $mtime1 = explode(" ", microtime()); $endTime = $mtime1[0] + $mtime1[1]; printf ("页面执行时间：%.6fs.",$endTime-$startTime); ?></pre></div><p><span style="color: #800000"><strong>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：</strong></span></p><p><span style="color: #ff6600"><strong>在线任意进制转换工具：<br/></strong></span><a target="_blank" href="http://tools.0133.cn/transcoding/hexconvert">http://tools.0133.cn/transcoding/hexconvert</a></p><p><span style="color: #ff6600"><strong>科学计算器在线使用_高级计算器在线计算：<br/></strong></span><a target="_blank" href="http://tools.0133.cn/jisuanqi/jsqkexue">http://tools.0133.cn/jisuanqi/jsqkexue</a></p><p><span style="color: #ff6600"><strong>在线计算器_标准计算器：<br/></strong></span><a target="_blank" href="http://tools.0133.cn/jisuanqi/jsq">http://tools.0133.cn/jisuanqi/jsq</a></p><p>更多关于PHP相关内容感兴趣的读者可查看本站专题：《<a target="_blank" href="https://www.0133.cn/Special/630.htm">PHP数学运算技巧总结</a>》、《<a target="_blank" href="https://www.0133.cn/Special/623.htm">PHP数组(Array)操作技巧大全</a>》、《<a target="_blank" href="https://www.0133.cn/Special/614.htm">PHP数据结构与算法教程</a>》、《<a target="_blank" href="https://www.0133.cn/Special/111.htm">php程序设计算法总结</a>》、《<a target="_blank" href="https://www.0133.cn/Special/357.htm">PHP运算与运算符用法总结</a>》、《<a target="_blank" href="https://www.0133.cn/Special/47.htm">php字符串(string)用法总结</a>》及《<a target="_blank" href="https://www.0133.cn/Special/231.htm">php常见数据库操作技巧汇总</a>》</p><p>希望本文所述对大家PHP程序设计有所帮助。</p></div><p>以上就是PHP进制转换实例分析(2,8,16,36,64进制至10进制相互转换)的详细内容，更多请关注0133技术站其它相关文章！</p></article><div 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