$mtime1=explode(" ", microtime()); $startTime=$mtime1[0] +$mtime1[1]; ?> 进制转换/title></p><p></head></p><p><body></p><p><form id="jzh"name="jinzhih"method="post"action=""></p><p><input name="go"type="hidden"value="100"></p><p><table width="482"border="1"cellpadding="0"cellspacing="0"bordercolor="#FFE8E8"bgcolor="#F4F8FB"></p><p> <tr></p><p> <td width="194"><select name="jinzhi0"id="jinzhi0"></p><p> <option value="2">2</option></p><p> <option value="8">8</option></p><p> <option value="10"selected="selected">10</option></p><p> <option value="16">16</option></p><p> <option value="36">36</option></p><p> <option value="62">62</option></p><p> </select></p><p>进制</td></p><p> <td width="275"><input name="zhi"type="text"id="zhi"/></td></p><p> </tr></p><p> <tr></p><p> <td>进行<input name="lx"type="radio"value="0"checked="checked"/></p><p>普通<input type="radio"name="lx"value="1"/>高精</td><td> </td></p><p> </tr></p><p> <tr></p><p> <td>转换为</p><p> <select name="jinzhi1"id="jinzhi1"></p><p> <option value="2"selected="selected">2</option></p><p> <option value="8">8</option></p><p> <option value="10">10</option></p><p> <option value="16">16</option></p><p> <option value="36">36</option></p><p> <option value="62">62</option></p><p> </select>进制，</td><td>总长度为</p><p> <input name="changdu"type="text"id="changdu"value="10"size="4"maxlength="2"/></p><p>字符。</td></tr><tr></p><p> <td><input type="submit"name="Submit"value="提交"/></td></p><p> <td><input type="reset"name="Submit2"value="重置"/></td></p><p> </tr></table></p><p> <p>注意：仅能进行10进制转换为2、8、16、36、62进制；或反转换。</p></form></p><p><?php</p><p>classjinzhi_class</p><p>{</p><p> //10进制转2、8、16、36、62进制</p><p> functionjinzhih_0($shu,$jinzhi,$w)</p><p> {</p><p> $zifu="";</p><p> while($shu!=0){</p><p> $linshi=$shu%$jinzhi;</p><p> switch($jinzhi){</p><p> case2:</p><p> $zifu=decbin($shu);</p><p> return$zifu;</p><p> case8:</p><p> $zifu=decoct($shu);</p><p> return$zifu;</p><p> case16:</p><p> $zifu=dechex($shu);</p><p> return$zifu;</p><p> case36:</p><p> if($linshi>=10)</p><p> {</p><p> $zifu.=chr(($linshi+55));</p><p> }else{</p><p> $zifu.=$linshi;}</p><p> break;</p><p> case62:</p><p> if(($linshi>=10) && ($linshi36)) {$zifu.=chr($linshi+55);break;}</p><p> if(($linshi>=36) && ($linshi62)) {$zifu.=chr($linshi+61);break;}</p><p> $zifu.=$linshi;break;</p><p> default:</p><p> $zifu.=$linshi;</p><p> break;</p><p> }</p><p> $shu=intval($shu/$jinzhi);</p><p> }</p><p> for($i=strlen($zifu);$i$w;$i++)</p><p> $zifu.="0";</p><p> returnstrrev($zifu);}</p><p> //2、8、16、36、62进制转10进制</p><p> functionjinzhih_1($zifu,$jinzhi,$w)</p><p> {$shu=0;</p><p> for($i=0;$i=strlen($zifu)-1;$i++)</p><p> {</p><p> $linshi=substr($zifu,$i,1);</p><p> switch($jinzhi){</p><p> case2:</p><p> $shu=bindec($zifu);</p><p> $i=strlen($zifu)+1;</p><p> break;</p><p> case8:</p><p> $shu= octdec($zifu);</p><p> $i=strlen($zifu)+1;</p><p> break;</p><p> case16:</p><p> $shu= hexdec($zifu);</p><p> $i=strlen($zifu)+1;</p><p> break;</p><p> case36:</p><p> if(ord($linshi)=57)</p><p> {$shu+=(ord($linshi)-48)*pow($jinzhi,strlen($zifu)-$i-1);</p><p> }else{</p><p> $shu=$shu+ (ord($linshi)-55)*pow($jinzhi,strlen($zifu)-$i-1);}</p><p> break;</p><p> case62:</p><p> if(ord($linshi)=57)</p><p> {$shu+=$linshi*pow($jinzhi,strlen($zifu)-$i-1); </p><p> }elseif((ord($linshi)>=65) && (ord($linshi)=90)){</p><p> $shu+= (ord($linshi)-55)*pow($jinzhi,strlen($zifu)-$i-1);</p><p> }else{</p><p> $shu+= (ord($linshi)-61)*pow($jinzhi,strlen($zifu)-$i-1);}</p><p> break;</p><p> }</p><p> }</p><p> return$shu;</p><p> }</p><p> //10进制高精度转换2、8、16、36、62进制</p><p> functionjinzhih_G0($shu,$jinzhi,$w)</p><p> {</p><p> $zifu="";</p><p> while($shu!=0){</p><p> $linshi=bcmod($shu,$jinzhi);</p><p> switch($jinzhi){</p><p> case2:</p><p> $zifu=decbin($shu);</p><p> return$zifu;</p><p> case8:</p><p> $zifu=decoct($shu);</p><p> return$zifu;</p><p> case16:</p><p> $zifu=dechex($shu);</p><p> return$zifu;</p><p> case36:</p><p> if($linshi>=10)</p><p> {</p><p> $zifu.=chr(($linshi+55));</p><p> }else{</p><p> $zifu.=$linshi;}</p><p> break;</p><p> case62:</p><p> if(($linshi>=10) && ($linshi36)) {$zifu.=chr($linshi+55);break;}</p><p> if(($linshi>=36) && ($linshi62)) {$zifu.=chr($linshi+61);break;}</p><p> $zifu.=$linshi;break;</p><p> default:</p><p> $zifu.=$linshi;</p><p> break;</p><p> }</p><p> $shu=intval(bcdiv($shu,$jinzhi));</p><p> }</p><p> for($i=strlen($zifu);$i$w;$i++)</p><p> $zifu.="0";</p><p> returnstrrev($zifu);}</p><p> //2、8、16、36、62进制高精度转换10进制</p><p> functionjinzhih_G1($zifu,$jinzhi,$w)</p><p> {$shu="";</p><p> for($i=0;$i=strlen($zifu)-1;$i++)</p><p> {</p><p> $linshi=substr($zifu,$i,1);</p><p> switch($jinzhi){</p><p> case2:</p><p> $shu=bindec($zifu);</p><p> $i=strlen($zifu)+1;</p><p> break;</p><p> case8:</p><p> $shu= octdec($zifu);</p><p> $i=strlen($zifu)+1;</p><p> break;</p><p> case16:</p><p> $shu= hexdec($zifu);</p><p> $i=strlen($zifu)+1;</p><p> break;</p><p> case36:</p><p> if(ord($linshi)=57)</p><p> {$shu=bcadd($shu,bcmul((ord($linshi)-48),bcpow($jinzhi,strlen($zifu)-$i-1)));</p><p> }else{</p><p> $shu=bcadd($shu,bcmul((ord($linshi)-55),bcpow($jinzhi,strlen($zifu)-$i-1)));}</p><p> break;</p><p> case62:</p><p> if(ord($linshi)=57)</p><p> {$shu=bcadd($shu,bcmul($linshi,bcpow($jinzhi,strlen($zifu)-$i-1)));</p><p> }elseif((ord($linshi)>=65) && (ord($linshi)=90)){</p><p> $shu=bcadd($shu,bcmul((ord($linshi)-55),bcpow($jinzhi,strlen($zifu)-$i-1)));</p><p> }else{</p><p> $shu=bcadd($shu,bcmul((ord($linshi)-61),bcpow($jinzhi,strlen($zifu)-$i-1)));</p><p> }</p><p> break;</p><p> }</p><p> }</p><p> return$shu;}</p><p>}</p><p>if(isset($_GET["p"]))</p><p>{if($_GET["p"]==="1"){</p><p>echo"";</p><p>echo"提示：</p><p>";</p><p>echo"32进制低精转换，最大值：2147483646</p><p>";</p><p>echo"32进制高精转换，最大值：77309411327</p><p>";</p><p>echo"64进制高精转换，最大值：133143986175</p><p>";</p><p>echo"";</p><p>echo"值为：";</p><p>$Fs=newjinzhi_class();</p><p>if($_POST['lx']=="0"&&$_POST['jinzhi0']=="10")</p><p>{echo$Fs->jinzhih_0($_POST['zhi'],$_POST['jinzhi1'],$_POST['changdu'])."</p><p>";}</p><p>if($_POST['lx']=="1"&&$_POST['jinzhi0']=="10")</p><p>{echo$Fs->jinzhih_G0($_POST['zhi'],$_POST['jinzhi1'],$_POST['changdu']);}</p><p>if($_POST['lx']=="0"&&$_POST['jinzhi0']>"10")</p><p>{echo$Fs->jinzhih_1($_POST['zhi'],$_POST['jinzhi0'],$_POST['changdu']);}</p><p>if($_POST['lx']=="1"&&$_POST['jinzhi0']>"10")</p><p>{echo$Fs->jinzhih_G1($_POST['zhi'],$_POST['jinzhi0'],$_POST['changdu']);}</p><p>}</p><p>echo"";}</p><p>$mtime1=explode(" ", microtime());</p><p>$endTime=$mtime1[0] +$mtime1[1];</p><p>printf ("页面执行时间：%.6fs.",$endTime-$startTime);</p><p>?></p></td></tr></table> </div>
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