php实现36进制与10进制转换功能示例
本文实例讲述了php实现36进制与10进制转换功能。分享给大家供大家参考,具体如下:
/** *@descim:十进制数转换成三十六机制数 *@param(int)$num十进制数 *return返回:三十六进制数 */ functionget_char($num){ $num=intval($num); if($num<=0) returnfalse; $charArr=array("0","1","2","3","4","5","6","7","8","9",'A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'); $char=''; do{ $key=($num-1)%36; $char=$charArr[$key].$char; $num=floor(($num-$key)/36); }while($num>0); return$char; } /** *@descim:三十六进制数转换成十机制数 *@param(string)$char三十六进制数 *return返回:十进制数 */ functionget_num($char){ $array=array("0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"); $len=strlen($char); for($i=0;$i<$len;$i++){ $index=array_search($char[$i],$array); $sum+=($index+1)*pow(36,$len-$i-1); } return$sum; }
使用实例:
echo"get_char:".get_char(514549)."<br>"; echo"get_num:".get_num('A0ZZ')."<br>";
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:
在线任意进制转换工具:
http://tools.jb51.net/transcoding/hexconvert
科学计算器在线使用_高级计算器在线计算:
http://tools.jb51.net/jisuanqi/jsqkexue
在线计算器_标准计算器:
http://tools.jb51.net/jisuanqi/jsq
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希望本文所述对大家PHP程序设计有所帮助。