Question

我目前正在做一个电子商务系统。我想监控那个月有多少人购买了特定产品。例如，我正在销售耳机，5人在1月，2月份购买了耳机，依此类推。

问题：是否可以将mm存储在我的表格中？

注意：我在html中使用了datepicker（html中datepicker的格式为yyyy-mm-dd）

CONTROLLER

$data['products'] = $this->CrudModel->count_all('products','date');
print_r($data['products']);die;

MODEL

public function count_all($table,$date)
{
    $this->db->select('product_name');
    $this->db->from($table);
    $this->db->where(array('date' => '$date' )); // What should I put here? So that I can fetch the date starting January until December
    $num_results = $this->db->count_all_results();
}

我的产品表格的列

'event_id' 'full_name' 'email' 'date' 'contact'

Answer 1

尝试以下代码。

$this->db->where('date >=', $start_date);
$this->db->where('date <=', $end_date);

或者您也可以尝试

$where = "DATE(date) BETWEEN '2017-01-01' AND '2017-02-01'";

Answer 2

您可以使用下面的分组

public function count_all($table,$date)
{
    $this->db->select('product_name');
    $this->db->from($table);
    $this->db->where('date >=', $start_date);
    $this->db->where('date <=', $end_date);
    $this->db->order_by('date','desc');
    $this->db->group_by('MONTH(date), YEAR(date)');
    $num_results = $this->db->count_all_results();
}

使用Codeigniter计算特定月份的全部

2 个答案: