Question

我对mysql有这个查询：

SELECT HOUR(time),COUNT(*) FROM pageview WHERE time >= DATE_SUB(NOW(),INTERVAL 12 HOUR) GROUP BY HOUR(time)

例如，这是输出：

Array
(
    [0] => Array
        (
            [HOUR(time)] => 1
            [COUNT(*)] => 1
        )

    [1] => Array
        (
            [HOUR(time)] => 10
            [COUNT(*)] => 4
        )

    [2] => Array
        (
            [HOUR(time)] => 11
            [COUNT(*)] => 5
        )

)

但是我想要像这样的输出

Array
(
    [1] => 1
    [10] => 4
    [11] => 5
)

数组索引应该是[HOUR(time)]的值。我希望直接通过更改查询。

要获取数据我使用：

$stmt = $db->prepare($query);
$result = $stmt->execute();
$views = $stmt->fetchAll();

Answer 1

mysql结果中的索引自动创建，通过第一个数组实现目标循环并根据需要创建新数据

$result = array();
foreach($views as $row) {
    $result[$row['HOUR(time)']] =  array( 'COUNT(*)' =>  $row['COUNT(*)']);
}
print_r($result); // check output

或更简单的表格

$result = array();
foreach($views as $row) {
    $result[$row['HOUR(time)']] =  $row['COUNT(*)'];
}
print_r($result); // check output

Answer 2

试试这个

$res = array();
foreach($views as $data)
{
 $res[$data['HOUR(time)']] =  array( 'COUNT(*)' =>  $data['COUNT(*)']);
}
print_r($res);

PHP SQL：GROUP BY作为数组索引

2 个答案: