thinks!

非常非常赞~~~站长很给力!

OK,think you very much!

Jelly 你好!如下代码:
$point = 6521;
$baseData = [

1 => [0,2300],
2 => [2301,5000],
3 => [5001,13000],
4 => [13001,23000],
5 => [23001,50000]

];
求$point 在哪个区间,并返回键值(1,2,3,4,5)
用传统方法很好做,如果用collect()怎么重组呢?