javascript:
a. 代码:

/*@desc:json对象以键名排序*/function ksort(obj){var ret = {}for(var i in obj){ ret[i] = obj[i]}return ret}

b. 测试:

var obj = {"3":"c","6":"a","2":"b"}var ret = ksort(obj)console.log(ret)

c. 输出:

{ '2': 'b', '3': 'c', '6': 'a' }php:
a. 测试:

<?php$arr = array( '3'=>'c', '6'=>'a', '2'=>'b');ksort($arr);var_dump($arr);

b. 输出:

array(3) {[2]=>string(1) "b"[3]=>string(1) "c"[6]=>string(1) "a"}