Question

我正在使用PHP CodeIgniter框架。这里我有一个带有值的数组，距离字段在所有数组中。所以我想根据距离变量对这个数组进行排序。当距离很小时，它应该显示在数组的顶部。

Array
(   

    [3] => Array
        (

            [distance] => 0.1867701321678877
            [search_name] => gshshs
            [type] => vendor
        )

    [4] => Array
        (

            [distance] => 0.2581692930636528
            [search_name] => imarahtech
            [type] => vendor
        )

    [5] => Array
        (

            [distance] => 13.022316349008124
            [delivery_available] => Yes
            [search_name] => mius
            [type] => vendor
        )

    [6] => Array
        (

            [distance] => 23.49767368340837
            [search_name] => imarahtech
            [type] => vendor
        )

    [7] => Array
        (

            [distance] => 37.85888922426821
            [search_name] => blu
            [type] => vendor
        )


    [8] => Array
        (

            [distance] => 0.18766008198496642
            [search_name] => fried rice 
            [type] => product
        )

    [14] => Array
        (

            [distance] => 13.022316349008124
            [search_name] => meals rice
            [type] => product
        )

    [15] => Array
        (

            [distance] => 37.85888922426821
            [search_name] => ayla
            [type] => product
        )

)

所以这就是我想要的，显示数据升序。

输出

Array
(   

    [3] => Array
        (

            [distance] => 0.1867701321678877
            [search_name] => gshshs
            [type] => vendor
        )

    [8] => Array
        (

            [distance] => 0.18766008198496642
            [search_name] => fried rice 
            [type] => product
        )

    [4] => Array
        (

            [distance] => 0.2581692930636528
            [search_name] => imarahtech
            [type] => vendor
        )

    [5] => Array
        (

            [distance] => 13.022316349008124
            [delivery_available] => Yes
            [search_name] => mius
            [type] => vendor
        )

    [14] => Array
        (

            [distance] => 13.022316349008124
            [search_name] => meals rice
            [type] => product
        )

    [6] => Array
        (

            [distance] => 23.49767368340837
            [search_name] => imarahtech
            [type] => vendor
        )

    [7] => Array
        (

            [distance] => 37.85888922426821
            [search_name] => blu
            [type] => vendor
        )

    [15] => Array
        (

            [distance] => 37.85888922426821
            [search_name] => ayla
            [type] => product
        )



)

有人请帮我解决这个问题。

感谢你

Answer 1

试试这个

usort($arrData, function($a, $b)
{
    if ($a['distance'] == $b['distance'])   return 0;
    return ($a['distance'] > $b['distance']) ?   1   :   -1;
});

这是有据可查的here

Answer 2

在codeigniter中，您可以通过将行添加到模型

轻松地在SQL中执行此操作

public function yourMethod(){

    $this->db->select();
    $this->db->from("your_table");
  //$this->db->where(...); //some condition, I guess

    $this->db->order_by('distance', "ASC");

    $query = $this->db->get();
    return $query->result();
}

如何使用数组值在PHP中对多维数组进行排序？

2 个答案: