php实现36进制与10进制转换功能示例

/**

 * @desc im: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;

}

/**

 * @desc im: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;

}

echo"get_char:".get_char(514549)."
";

echo"get_num:".get_num('A0ZZ')."
";