Question

我不知道是否可以这样做。我从数据库返回了超过1000行，并希望在返回后使用array_split按日期拆分它们。日期采用unix时间戳的形式。

我想要做的是按日期分页这些结果。如果可以做到这一点，有人可以给我一个小例子或者指出我需要进入的方向吗？

Answer 1

您需要选择新字段，将格式从时间戳转换为日期字符串，然后按其排序
循环遍历结果集，当日期与先前值不同时，则创建子数组

PHP代码和SQL（PS：首先必须通过'create_date'排序）

PS：group_by函数并未真正对整个数据集进行分组!!

$sql = " SELECT *, DATE_FORMAT(create_timestamp, '%Y-%m-%d') as create_date FROM some_table order by create_date asc";

$result = mysqli_query($dblink, $sql);

$grouped = group_by($result, 'create_date');


function group_by($inArray, $keyName) {
    if (is_array($inArray) && count($inArray)>0) {
        $cabinet = array();
        $tempBox = array();
        $prevoius_value = $inArray[0][$keyName];
        for($b=0;$b<count($inArray);$b++){
            $box = $inArray[$b];
            if ($prevoius_value != $box[$keyName]){
                array_push($cabinet, $tempBox);
                $tempBox = array();
                $prevoius_value = $box[$keyName];
            }
            array_push($tempBox, $box);
        }
         array_push($cabinet, $tempBox);
         return $cabinet;
    }
}

以下是样本结果：

$result = array(
    [0] => array(
        'id' => 1,
        'name' => 'One',
        'create_timestamp' => '123456789',
        'create_date' => '2014-04-02'
    ),

    [1] => array(
        'id' => 1,
        'name' => 'Two',
        'create_timestamp' => '123456789',
        'create_date' => '2014-04-03'
    ),

    [2] => array(
        'id' => 1,
        'name' => 'Three',
        'create_timestamp' => '123456789',
        'create_date' => '2014-04-03'
    ),

    [3] => array(
        'id' => 1,
        'name' => 'Four',
        'create_timestamp' => '123456789',
        'create_date' => '2014-04-04'
    ),
);

$grouped = array(
    [0] => array(
        [0] => array(
            'id' => 1,
            'name' => 'One',
            'create_timestamp' => '123456789',
            'create_date' => '2014-04-02'
        )
    ),

    [1] => array(
        [0] => array(
            'id' => 2,
            'name' => 'Two',
            'create_timestamp' => '123456789',
            'create_date' => '2014-04-03'
        ),

        [1] => array(
            'id' => 3,
            'name' => 'Three',
            'create_timestamp' => '123456789',
            'create_date' => '2014-04-03'
        )
    ),

    [2] => array(
        [0] => array(
            'id' => 4,
            'name' => 'Four',
            'create_timestamp' => '123456789',
            'create_date' => '2014-04-04'
        )
    ),
);

是否可以使用array_split按日期拆分数据库结果？

1 个答案: