<?php
namespace LdzfPay\Api\Common;

class JsonUtil{
    public static function arrayToJson($paramsArr=array()){
        $map = new HashMap();
        foreach($paramsArr as $key => $value){
            $map->put($key,$value);
        }
        $paramter = array();
        $keys = $map->keys();
        foreach ($keys as $key) {
            $paramter[$key."=".trim($map->get($key))] = "\"".$key."\":\"".trim($map->get($key))."\",";
        }
        //字母a到z排序后的数组
        $sort_array = StringUtil::arg_sort($paramter);
        $json = "";
        while (list ($key, $val) = each($sort_array)) {
            $json .= $val;
        }
        $json = substr($json, 0, count($json) - 2); //去掉最后一个 , 字符
        $json = "{".$json."}";
        return $json;
    }

}