Question

我的数组

Array
(
    [1] => Array
        (
            [19-05-18] => 9:00
        )

    [2] => Array
        (
            [19-05-18] => 9:00
        )

    [3] => Array
        (
            [19-05-18] => 9:06
        )

    [4] => Array
        (
            [19-05-18] => 9:10
        )

    [5] => Array
        (
            [19-05-18] => 9:10
        )
    [9] => Array
        (
            [22-05-18] => 18:23
        )

    [10] => Array
        (
            [22-05-18] => 18:25
        )

    [11] => Array
        (
            [22-05-18] => 18:25
        )

    [12] => Array
        (
            [22-05-18] => 18:27
        )

    [13] => Array
        (
            [22-05-18] => 18:27
        )

    [14] => Array
        (
            [22-05-18] => 18:23
        )
)

但我想要像这样的输出

Array
(
    [1] => Array
        (
            [19-05-18] => 9:00
            [19-05-18] => 9:06
            [19-05-18] => 9:10
        )
    [2] => Array
        (
            [22-05-18] => 18:23
            [22-05-18] => 18:25
            [22-05-18] => 18:27
        )
)

Answer 1

$new = array();
foreach ($arr as $val) {
    foreach ($val as $k => $v) {
        if (!isset($new[$k]))
            $new[$k] = array();

        if (!in_array($v, $new[$k])) {
            $new[$k][] = $v;
        }
    }
}

你可以有这样的东西。

它会将时间存储在一个数组数组中，并将时间作为新索引第一个if语句将确保没有重复的条目。当然，如果您想要重复的条目，那么非常欢迎您从代码中删除该语句。

Answer 2

对数组进行分组的一种方法是使用array_reduce

$arr = .... //Your array

$result = array_reduce( $arr, function( $c, $v ){
    $c[ key( $v ) ][] = current( $v );
    return $c;
}, array() );

echo "<pre>";
print_r( $result );
echo "</pre>";

这将导致：

Array
(
    [19-05-18] => Array
        (
            [0] => 9:00
            [1] => 9:00
            [2] => 9:06
            [3] => 9:10
            [4] => 9:10
        )

    [22-05-18] => Array
        (
            [0] => 18:23
            [1] => 18:25
            [2] => 18:25
            [3] => 18:27
            [4] => 18:27
            [5] => 18:23
        )

)

Doc：array_reduce()

将相同的数组与日期索引合并并返回新数组

2 个答案: