php - PHP排序内部，内部数组

Question

好的，我有一个这样的数组：

array {
    [0] => array {
               [0] => array {
                         ["Time"] => "01:00:00"
                      }
               [1] => array {
                         ["Time"] => "00:00:00"
                      }
    }
    [1] => array {
               [0] => array {
                         ["Time"] => "01:00:00"
                      }
               [1] => array {
                         ["Time"] => "00:00:00"
                      }
    }
}

现在我要做的是按时间值对内部内部数组（具有时间值的数组）进行排序。只是为了使内部数组按时间值排序。我该怎么做？

如果有帮助，我确实安装了 PHP 5.3。

Answer 1

foreach ( $array as $key => &$part )
{
    usort( &$part, function( $a, $b ) {
        return strtotime($a['Time'])-strtotime($b['Time']) > 0;
    });
}

Answer 2

试试这个：

$arr = array(array(array("Time" => "01:00:00"), array("Time" => "02:00:00"), array("Time" => "00:00:00")),
             array(array("Time" => "02:00:00"), array("Time" => "01:00:00"), array("Time" => "00:00:00")));

$c = count($arr);
for ($i = 0; $i < $c; $i++) {
    sort($arr[$i]);
}

var_dump($arr); // outputs desired array

Answer 3

function custom_map( $array ) {
    usort( $array, function( $a, $b ) {
        return strtotime($a['Time'])-strtotime($b['Time']) > 0;
    });
    return $array;
}

$new_array = array_map( "custom_map", $array );

http://se1.php.net/manual/en/function.usort.php

http://se1.php.net/manual/en/function.array-map.php

Answer 4

我认为对第二级进行排序并没有变得更简单——迭代第一级并sort()在每次出现时调用。因为您的字符串大概是hh:ii:ss，所以将它们作为简单字符串进行比较是完全安全的（不需要strtotime()）。

代码：（演示）

$array = [
    [
        ['Time' => "01:00:00"],
        ['Time' => "00:00:00"]
    ],
    [
        ['Time' => "01:00:00"],
        ['Time' => "00:00:00"]
    ]
];

array_walk($array, 'sort');
var_export($array);

输出：

array (
  0 => 
  array (
    0 => 
    array (
      'Time' => '00:00:00',
    ),
    1 => 
    array (
      'Time' => '01:00:00',
    ),
  ),
  1 => 
  array (
    0 => 
    array (
      'Time' => '01:00:00',
    ),
    1 => 
    array (
      'Time' => '00:00:00',
    ),
  ),
)