2

我正在尝试根据“已调度”键对数组进行排序。但是，它不起作用。有没有人有任何指针可以让这段代码工作？谢谢：

大批：

Array
(
    [0] => Array
        (
            [wcccanumber] => 130700203
            [call] => SEIZURES
            [address] => 221 S PINE ST
            [county] => C
            [station] => CNB
            [department] => CANBY FIRE DISTRICT #62
            [units] => E61, M62
            [dispatched] => 20:43:59
        )

    [1] => Array
        (
            [wcccanumber] => 130700198
            [call] => CARD/RESP ARREST
            [address] => 40781 HWY 26
            [county] => C
            [station] => SAN
            [department] => SANDY FIRE DISTRICT #72
            [units] => 3709, CH37, M1, M272, R71
            [dispatched] => 19:33:27
        )

    [2] => Array
        (
            [wcccanumber] => 130700337
            [call] => TRAUMA C1
            [address] => 16500 SW CENTURY DR
            [county] => W
            [station] => SHW
            [department] => TUALATIN VALLEY FIRE & RESCUE
            [units] => E33, METWA, MW68
            [dispatched] => 21:40:13
        )

    [3] => Array
        (
            [wcccanumber] => 130700335
            [call] => FALL C1
            [address] => 48437 NW PONGRATZ RD
            [county] => W
            [station] => BUX
            [department] => BANKS FIRE DISTRICT #13
            [units] => E14, METWA, MW57, R13
            [dispatched] => 21:07:48
        )

)

代码：

public function sortActiveCalls () 
{
    foreach ($this->getActiveCalls() as $key => $val) {
           $time[$key] = $val['dispatched'];
    }

    array_multisort($time, SORT_ASC, $this->getActiveCalls());
}
4

2 回答 2

4

我发现使用 usort 更容易

 usort($array, function ($a, $b) {
       return strtotime($a["dispatched"]) - strtotime($b["dispatched"]);
 });

对于您的情况，您将重新实现您的sortActiveCalls方法

public function sortActiveCalls(){
     $data = $this->getActiveCalls();
     usort($data, function ($a, $b) {
       return strtotime($a["dispatched"]) - strtotime($b["dispatched"]);
     });
     return $data;
}

不是这仅适用于 php 5.3 及更高版本

如果您使用的是旧版本的 php，则必须定义一个单独的函数来执行类似的排序

if (!function_exists("sortByDispatched")){
  function sortByDispatched($a, $b){
    return strtotime($a["dispatched"]) - strtotime($b["dispatched"]);
  }
}
usort($array, "sortByDispatched");
于 2013-07-03T04:56:40.067 回答
0

除了 Orangepill 所说的之外，如果您使用的是 5.2 或更早版本，则可以使用create_function()来创建匿名（lambda 样式）函数。例如，

usort($array, create_function( '$a,$b', 
'return strtotime($a["dispatched"]) - strtotime($b["dispatched"]);'));
于 2013-08-26T04:23:53.217 回答