<?php 
/**
 *十進制轉二進制、八進制、十六進制 不足位數(shù)前面補零*
 *
 * @param array $datalist 傳入數(shù)據(jù)array(100,123,130)
 * @param int $bin 轉換的進制可以是：2,8,16
 * @return array 返回數(shù)據(jù) array() 返回沒有數(shù)據(jù)轉換的格式
 */
function decto_bin($datalist,$bin)
{
  static $arr=array(0,1,2,3,4,5,6,7,8,9,'A','B','C','D','E','F');
  if(!is_array($datalist)) $datalist=array($datalist);
  if($bin==10)return $datalist; //相同進制忽略
  $bytelen=ceil(16/$bin); //獲得如果是$bin進制，一個字節(jié)的長度
  $aOutChar=array();
  foreach ($datalist as $num)
  {
    $t="";
    $num=intval($num);
  if($num===0)continue;
    while($num>0)
    {
      $t=$arr[$num%$bin].$t;
      $num=floor($num/$bin);
    }
    $tlen=strlen($t);
    if($tlen%$bytelen!=0)
    {
    $pad_len=$bytelen-$tlen%$bytelen;
    $t=str_pad("",$pad_len,"0",STR_PAD_LEFT).$t; //不足一個字節(jié)長度，自動前面補充0
    }
    $aOutChar[]=$t;
  }
  return $aOutChar;
}

var_dump(decto_bin(array(128,253),2));
var_dump(decto_bin(array(128,253),8));
var_dump(decto_bin(array(128,253),16));

X-Powered-By: PHP/5.2.0
Content-type: text/html

array(2) {
 [0]=>
 string(8) "10000000"
 [1]=>
 string(8) "11111101"
}
array(2) {
 [0]=>
 string(4) "0200"
 [1]=>
 string(4) "0375"
}
array(2) {
 [0]=>
 string(2) "80"
 [1]=>
 string(2) "FD"
}

<?php 
/**
 *二進制、八進制、十六進制 轉十進制*
 *
 * @param array $datalist 傳入數(shù)據(jù)array(df,ef)
 * @param int $bin 轉換的進制可以是：2,8,16
 * @return array 返回數(shù)據(jù) array() 返回沒有數(shù)據(jù)轉換的格式
 * @copyright chengmo QQ:8292669
 */
function bin_todec($datalist,$bin)
{
  static $arr=array('0'=>0,'1'=>1,'2'=>2,'3'=>3,'4'=>4,'5'=>5,'6'=>6,'7'=>7,'8'=>8,'9'=>9,'A'=>10,'B'=>11,'C'=>12,'D'=>13,'E'=>14,'F'=>15);
  if(!is_array($datalist))$datalist=array($datalist);
  if($bin==10)return $datalist; //為10進制不轉換
  $aOutData=array(); //定義輸出保存數(shù)組
  foreach ($datalist as $num)
  {
    $atnum=str_split($num); //將字符串分割為單個字符數(shù)組
    $atlen=count($atnum);
    $total=0;
    $i=1;
    foreach ($atnum as $tv)
    {
      $tv=strtoupper($tv);
       
      if(array_key_exists($tv,$arr))
      {
        if($arr[$tv]==0)continue;
        $total=$total+$arr[$tv]*pow($bin,$atlen-$i);
      }
      $i++;
    }
    $aOutData[]=$total;
  }
  return $aOutData;
}
 

var_dump(bin_todec(array('ff','ff33','cc33'),16));
var_dump(bin_todec(array('1101101','111101101'),2));
var_dump(bin_todec(array('1234123','12341'),8));

X-Powered-By: PHP/5.2.0
Content-type: text/html

array(3) {
 [0]=>
 int(255)
 [1]=>
 int(65331)
 [2]=>
 int(52275)
}
array(2) {
 [0]=>
 int(124)
 [1]=>
 int(508)
}
array(2) {
 [0]=>
 int(342099)
 [1]=>
 int(5345)
}