如何在PHP和MySQL中使用Unix时间戳计算记录月份组

Question

Example my_table

ID | Name | Date
--------------------------
12 | John | 123456789
13 | Mike | 987654321
...
29 | Rick | 123498765
30 | Adam | 987651234

show output result like this

Month | Count
--------------------------
3 | 5 | 
6 | 8 | 

How can I do this with PHP?

Answer 1

You can do this using MySQL Query as below.

SELECT MONTH(FROM_UNIXTIME(`Date`)) `Month`
    ,COUNT(ID)
FROM my_table
GROUP BY `Month`;

Answer 2

Since post tagged codeigniter

This is codeigniter way:

$query = $this->db->select("month(from_unixtime(`Date`)) as `month`, count(1) as `count`",FALSE)
                  ->group_by("month");
                  ->get("your_table");