要求是用PHP实现 实现功能如下：请问该怎么办？

Question

1转为：一11转为：十一21转为：二十一201转为：二百零一1000转为：一千

Answer 1

人民币金额数字转中文大写，无聊也用PHP写了一段相同功能的代码：
Php代码 
function cny($ns) { 
    static $cnums=array("零","壹","贰","叁","肆","伍","陆","柒","捌","玖"), 
        $cnyunits=array("圆","角","分"), 
        $grees=array("拾","佰","仟","万","拾","佰","仟","亿"); 
    list($ns1,$ns2)=explode(".",$ns,2); 
    $ns2=array_filter(array($ns2[1],$ns2[0])); 
    $ret=array_merge($ns2,array(implode("",_cny_map_unit(str_split($ns1),$grees)),"")); 
    $ret=implode("",array_reverse(_cny_map_unit($ret,$cnyunits))); 
    return str_replace(array_keys($cnums),$cnums,$ret); 
} 
function _cny_map_unit($list,$units) { 
    $ul=count($units); 
    $xs=array(); 
    foreach (array_reverse($list) as $x) { 
        $l=count($xs); 
        if ($x!="0" || !($l%4)) $n=($x=='0'?'':$x).($units[($l-1)%$ul]); 
        else $n=is_numeric($xs[0][0])?$x:''; 
        array_unshift($xs,$n); 
    } 
    return $xs; 
}

Answer 2

<?php

function exchange($number){
$number=substr($number,0,2);
$arr=array("零","一","二","三","四","五","六","七","八","九");
if(strlen($number)==1){
$result=$arr[$number];
}
else{
if($number==10){
$result="十";
}else{
if($number<20){
$result="十";
}else{
$result=$arr[substr($number,0,1)]."十";
}
if(substr($number,1,1)!="0"){
$result.=$arr[substr($number,1,1)]; 
}
}
}
return $result."<br>";
}

echo exchange(1);
echo exchange(11);
echo exchange(21);
?>
这个可以转换两位。只是给楼主一个思路。授之以鱼不如授之以渔。