PHP数组multisort [英] PHP array multisort

问题描述

我试图根据排序落键的数组，出动。但是，它不工作。有没有人有任何指针获得这个code的工作？感谢：

数组：

 阵列
（
    [0] =＆GT;排列
        （
            [wcccanumber] =＆GT; 130700203
            [电话] =＆GT;痫
            [地址] =＆GT; 221章第PINE ST
            [县] =＆GT; C
            [站] =＆GT; CNB
            [科] =＆GT;坎比防火分区＃62
            [单位] =＆GT; E61，M62
            [派出] =＆GT; 20时43分59秒
        ）    [1] =＆GT;排列
        （
            [wcccanumber] =＆GT; 130700198
            [电话] =＆GT; CARD / RESP逮捕
            [地址] =＆GT; 40781 HWY 26
            [县] =＆GT; C
            [站] =＆GT; SAN
            [科] =＆GT; SANDY防火分区＃72
            [单位] =＆GT; 3709，CH37，M1，M272，R71
            [派出] =＆GT; 19时33分27秒
        ）    [2] =＆GT;排列
        （
            [wcccanumber] =＆GT; 130700337
            [电话] =＆GT;外伤C1
            [地址] =＆GT; 16500 SW CENTURY DR
            [县] =＆GT; W¯¯
            [站] =＆GT; SHW
            [科] =＆GT;图拉丁VALLEY FIRE＆安培;拯救
            [单位] =＆GT; E33，METWA，MW68
            [派出] =＆GT; 21时40分13秒
        ）    [3] =＆GT;排列
        （
            [wcccanumber] =＆GT; 130700335
            [电话] =＆GT; FALL C1
            [地址] =＆GT; 48437 NW PONGRATZ RD
            [县] =＆GT; W¯¯
            [站] =＆GT; BUX
            [科] =＆GT;银行防火分区＃13
            [单位] =＆GT; E14，METWA，MW57，R13
            [派出] =＆GT; 21时07分48秒
        ））
 

code：

 公共职能sortActiveCalls（）
{
    的foreach（$这个 - ＆GT; getActiveCalls（）为$关键=＆GT; $ VAL）{
           $时间[$关键] = $ VAL ['派遣'];
    }    在array_multisort（$时间，SORT_ASC，$这个 - ＆GT; getActiveCalls（））;
}
 

解决方案

我觉得它更容易只是使用usort

  usort（$阵列功能（$ A，$ B）{
       返回的strtotime（$ A [出动]） - 的strtotime（$ B [出动]）;
 }）;
 

有关你的情况，你会重新实现你的 sortActiveCalls 方法

 公共职能sortActiveCalls（）{
     $数据= $这个 - ＆GT; getActiveCalls（）;
     usort（$的数据，功能（$ A，$ B）{
       返回的strtotime（$ A [出动]） - 的strtotime（$ B [出动]）;
     }）;
     返回$的数据;
}
 

不是这样只会在PHP 5.3及以上

工作

如果您正在使用PHP的旧版本，您将必须定义一个单独的函数做有点像

 如果（！function_exists（sortByDispatched））{
  功能sortByDispatched（$ A，$ B）{
    返回的strtotime（$ A [出动]） - 的strtotime（$ B [出动]）;
  }
}
usort（$阵列sortByDispatched）;
 

I am attempting to sort an array based off the key, "dispatched". However, it is not working. Does anyone have any pointers to get this code working? Thanks:

Array:

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
        )

)

Code:

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

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

解决方案

I find it easier just to use usort

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

For your case you would reimplement your sortActiveCalls method as

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

Not this will only work in php 5.3 and up

If you are using an older version of php you will have to define a separate function to do the sort like

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

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