1 /** 2  * 格式化金额 3  * 4  * @param int $money 5  * @param int $len 6  * @param string $sign 7  * @return string 8  */ 9 function format_money($money, $len=2, $sign=‘￥‘){10     $negative = $money > 0 ? ‘‘ : ‘-‘;11     $int_money = intval(abs($money));12     $len = intval(abs($len));13     $decimal = ‘‘;//小数14     if ($len > 0) {15         $decimal = ‘.‘.substr(sprintf(‘%01.‘.$len.‘f‘, $money),-$len);16     }17     $tmp_money = strrev($int_money);18     $strlen = strlen($tmp_money);19     for ($i = 3; $i < $strlen; $i += 3) {20         $format_money .= substr($tmp_money,0,3).‘,‘;21         $tmp_money = substr($tmp_money,3);22     }23     $format_money .= $tmp_money;24     $format_money = strrev($format_money);25     return $sign.$negative.$format_money.$decimal;26 }