/**

 * @author  ja颂

 * 把数字1-1亿换成汉字表述，如：123->一百二十三

 * @param [num] $num [数字]

 * @return [string] [string]

 */

 function numToWord($num)

 {

     $chiNum = array('零', '一', '二', '三', '四', '五', '六', '七', '八', '九');

     $chiUni = array('','十', '百', '千', '万','十', '百', '千', '亿', '十', '百','千','万','十', '百', '千');

     $uniPro = array(4, 8);

     $chiStr = '';

     $num_str = (string)$num;

     $count = strlen($num_str);

     $last_flag = true; //上一个 是否为0

     $zero_flag = true; //是否第一个

     $temp_num = null; //临时数字

     $uni_index = 0;

     $chiStr = '';//拼接结果

     if ($count == 2) {//两位数

         $temp_num = $num_str[0];

         $chiStr = $temp_num == 1 ? $chiUni[1] :                  $chiNum[$temp_num].$chiUni[1];

         $temp_num = $num_str[1];

         $chiStr .= $temp_num == 0 ? '' : $chiNum[$temp_num];

     }else if($count > 2){

         $index = 0;

         for ($i=$count-1; $i >= 0 ; $i--) {

             $temp_num = $num_str[$i];

             if ($temp_num == 0) {

                 $uni_index = $index%15;

                 if ( in_array($uni_index, $uniPro)) {

                     $chiStr = $chiUni[$uni_index]. $chiStr;

                     $last_flag = true;

                 }else if (!$zero_flag && !$last_flag ) {

                    $chiStr = $chiNum[$temp_num]. $chiStr;

                    $last_flag = true;

                 }

             }else{

                 $chiStr = $chiNum[$temp_num].$chiUni[$index%16] .$chiStr;

                $zero_flag = false;

                $last_flag = false;

             }

            $index ++;

          }

     }else{

         $chiStr = $chiNum[$num_str[0]];

     }

     return $chiStr;

 }

 $num = 101001545;

 echo numToWord($num);