mysql 排序

mysql 排序求助
PHP code
比如sql ="SELECT * FROM A WHERE `id` IN (5,18,25,4)"

现在的问题是怎么才能实现排序按照in数组(5,18,25,4)里的顺序来排序结果集?


------解决方案--------------------
... order by find_in_set(id, '5,18,25,4')