[PHP知识库]PHP 将数字金额转为英文拼写金额

客户提出要求将? ?$1000 转为显示 ONE THOUSAND? DOLLARS?

/**
 * 处理最大的数为9999亿，999billion, 12位
 * @param string $money
 */
function toENMoney($money){

    $rtnstr = "";
    
    // 格式化为两位小数
    $money = round($money, 2);
    // 小于20的数组
    $aa = ' ONE, TWO, THREE, FOUR, FIVE, SIX, SEVEN,'
        .' EIGHT, NINE, TEN, ELEVEN, TWELVE, THIRTEEN, FOURTEEN, FIFTEEN'
        .' SIXTEEN, SEVENTEEN, EIGHTEEN, NINETEEN';
    // 大于等于20的数组
    $bb = " TWENTY, THIRTY, FORTY, FIFTY, SIXTY, SEVENTY, EIGHTY, NINETY";
    
    $small = explode(',' , $aa);
    $big = explode(',' , $bb);
    
    $pointer_wz = strpos($money, '.');
    // 取出整数部分
    if ($pointer_wz > 0)
    {
        $integer = substr($money,0,$pointer_wz);
        $pointer = substr($money,$pointer_wz+1);
    }
    else 
        $integer = $money;
    // 格式化为12位数字
    $integer = substr('000000000000', strlen($integer)).$integer;
    if (strlen($pointer) == 1)
        $pointer = $pointer.'0';
    // 片段字符串
    $littestr = "";
    
    for ($i=0; $i<strlen($integer); $i=$i+3)
    {
        // 每次取三位数字
        $littestr = substr($integer, $i, 3);
        if ($littestr <= 0)
            continue;
        
        if ($littestr < 20)
        {
            if ($i == 9)
                $rtnstr .= ' AND'.$small[$littestr-1];
            else
                $rtnstr .= $small[$littestr-1];
        }else{
            // 百位
            $f = substr($littestr, 0, 1);
            if ($f >0 )
                $rtnstr .= $small[$f-1]. ' HUNDRED';
            elseif ($i == 9) 
                $rtnstr .= $rtnstr==''?'':' AND';
            $t1 = substr($littestr, 1, 1); // 十位
            $t2 = substr($littestr, 2, 1); // 个位
            // 十位和个位
            $tt = substr($littestr, 1, 2);
            if ($f>0 and $tt >0 and $i == 9)
                $rtnstr .= $rtnstr==''?'':' AND';
            if ($tt >0 and $tt < 20)
                $rtnstr .= $small[$tt-1];
            elseif ($tt > 20)
            {
                $rtnstr .= $big[$t1-2];
                if ($t2 > 0)
                    $rtnstr .= '-'.ltrim($small[$t2-1]);
            }
        }
        if ($i == 0)
            $rtnstr .= ' BILLION';
        elseif ($i == 3)
            $rtnstr .= ' MILLION';
        elseif ($i == 6)
            $rtnstr .= ' THOUSAND';
    }
    
    // 处理小数部分
    if ($pointer>0)
    {
        $rtnstr .= ' DOLLARS WITH';
        if ($pointer < 20)
        {
            $rtnstr .= $small[$pointer-1];
        }
        else
        {
            $tt = substr($littestr, 1, 2);
            $t1 = substr($pointer, 0, 1);
            $t2 = substr($pointer, 1, 1);
            $rtnstr .= $big[$t1-2];
            if ($t2 > 0)
                $rtnstr .= $small[$t2-1];
        }
        $rtnstr .= ' CENTS';
    }
    
    return $rtnstr;
}