对格式为 d/m/Y 的日期数组进行排序[重复]

Question

我有一个像这样的数组，我想按日期排序这个数组如何排序这个数组

Array
(
[0] => 28/02/2016
[1] => 30/01/2016
[2] => 16/02/2016
[3] => 19/02/2016
[4] => 24/02/2016
[5] => 13/02/2016
[6] => 18/02/2016
[7] => 27/02/2016
[8] => 25/02/2016
[9] => 01/02/2016
[10] => 02/02/2016
[11] => 03/02/2016
[12] => 05/02/2016
[13] => 06/02/2016
[14] => 07/02/2016
[15] => 08/02/2016
[16] => 11/02/2016
[17] => 12/02/2016
)

我使用了 usort 但它不起作用，我正在编写一个函数并将其转换为 strtotime 但它不起作用。

Answer 1

尝试以下解决方案：

$array = array
(
    0 => '28/02/2016',
    1 => '30/01/2016',
    2 => '16/02/2016',
    3 => '19/02/2016',
    4 => '24/02/2016',
    5 => '13/02/2016',
    6 => '18/02/2016',
    7 => '27/02/2016',
    8 => '25/02/2016',
    9 => '01/02/2016',
    10 => '02/02/2016',
    11 => '03/02/2016',
    12 => '05/02/2016',
    13 => '06/02/2016',
    14 => '07/02/2016',
    15 => '08/02/2016',
    16 => '11/02/2016',
    17 => '12/02/2016'
);

function sortFunction( $a, $b ) {
    $date1 = DateTime::createFromFormat('d/m/Y', $a);

    $date2 = DateTime::createFromFormat('d/m/Y', $b);
    return $date1->getTimestamp() - $date2->getTimestamp();
}
usort($array, "sortFunction");
print_r($array);

输出

Array
(
    [0] => 30/01/2016
    [1] => 01/02/2016
    [2] => 02/02/2016
    [3] => 03/02/2016
    [4] => 05/02/2016
    [5] => 06/02/2016
    [6] => 07/02/2016
    [7] => 08/02/2016
    [8] => 11/02/2016
    [9] => 12/02/2016
    [10] => 13/02/2016
    [11] => 16/02/2016
    [12] => 18/02/2016
    [13] => 19/02/2016
    [14] => 24/02/2016
    [15] => 25/02/2016
    [16] => 27/02/2016
    [17] => 28/02/2016
)

Answer 2

使用 sort() 尝试一下

$array = array
(
    0 => '28/02/2016',
    1 => '30/01/2016',
    2 => '16/02/2016',
    3 => '19/02/2016',
    4 => '24/02/2016',
    5 => '13/02/2016',
    6 => '18/02/2016',
    7 => '27/02/2016',
    8 => '25/02/2016',
    9 => '01/02/2016',
    10 => '02/02/2016',
    11 => '03/02/2016',
    12 => '05/02/2016',
    13 => '06/02/2016',
    14 => '07/02/2016',
    15 => '08/02/2016',
    16 => '11/02/2016',
    17 => '12/02/2016'
);

foreach($array as $key=>$val) {
    $date_arr=explode('/',$val);
    $time_arr[$key]=strtotime($date_arr[2].'/'.$date_arr[1].'/'.$date_arr[0]);
}
sort($time_arr);
foreach($time_arr as $key=>$val) {
    $array[$key]=date("d/m/Y", $val);
}
echo '<pre>'; print_r($array); echo '</pre>';

输出

Array
(
    [0] => 30/01/2016
    [1] => 01/02/2016
    [2] => 02/02/2016
    [3] => 03/02/2016
    [4] => 05/02/2016
    [5] => 06/02/2016
    [6] => 07/02/2016
    [7] => 08/02/2016
    [8] => 11/02/2016
    [9] => 12/02/2016
    [10] => 13/02/2016
    [11] => 16/02/2016
    [12] => 18/02/2016
    [13] => 19/02/2016
    [14] => 24/02/2016
    [15] => 25/02/2016
    [16] => 27/02/2016
    [17] => 28/02/2016
)