2

我想按“日期”字段对以下选项卡进行排序并计算“临时”字段的总和：

0 =>     array (size=3)      'id_cra' => string '4586' (length=4)      'temps' => string '03:00:00' (length=8)      'date' => string '2013-06-03' (length=10) 
 1 =>     array (size=3)      'id_cra' => string '4587' (length=4)      'temps' => string '03:00:00' (length=8)      'date' => string '2013-06-06' (length=10) 
 2 =>     array (size=3)      'id_cra' => string '4588' (length=4)      'temps' => string '03:00:00' (length=8)      'date' => string '2013-06-05' (length=10)  
3 =>     array (size=3)      'id_cra' => string '4589' (length=4)      'temps' => string '03:00:00' (length=8)      'date' => string '2013-06-06' (length=10) 
 4 =>     array (size=3)      'id_cra' => string '4590' (length=4)      'temps' => string '03:00:00' (length=8)      'date' => string '2013-06-07' (length=10) 
 5 =>     array (size=3)      'id_cra' => string '4591' (length=4)      'temps' => string '02:00:00' (length=8)      'date' => string '2013-06-03' (length=10)  
6 =>     array (size=3)      'id_cra' => string '4592' (length=4)      'temps' => string '03:30:00' (length=8)      'date' => string '2013-06-03' (length=10)

预期结果：

日期=>“临时”字段的总和

2013-06-03 =>08:30:00
2013-06-06 =>06:00:00

ETC

PS：很抱歉问了一些对你来说可能很简单的问题，我已经在互联网上检查过（例如这里：Sort array of objects by object fields）但我不明白答案

4

2 回答 2

2

我没有尝试，但它必须是这样的：

$arr = [your array data]; // your array which has to be sorted

usort($arr, 'sort_array');

function sort_array($a, $b) {

    $timeA = strtotime($a['date']);
    $timeB = strtotime($b['date']);

    if($timeA == $timeB) {
        return 0;
    }
    return $timeA < $timeB ? -1 : 1;
}

在对必须按日期“分组”并对“临时”求和的数组进行排序后，计算总和将是一个循环

于 2013-06-20T14:03:17.220 回答
1

第一部分相当简单。array_multisort()我们可以使用这样的字段对数组的数据进行排序：

<?php
$data = array(
    0 => array('id_cra' => '4586', 'temps' => '03:00:00', 'date' => '2013-06-03'),
    1 => array('id_cra' => '4587', 'temps' => '03:00:00', 'date' => '2013-06-06'),
    2 => array('id_cra' => '4588', 'temps' => '03:00:00', 'date' => '2013-06-05'), 
    3 => array('id_cra' => '4589', 'temps' => '03:00:00', 'date' => '2013-06-06'),
    4 => array('id_cra' => '4590', 'temps' => '03:00:00', 'date' => '2013-06-07'),
    5 => array('id_cra' => '4591', 'temps' => '02:00:00', 'date' => '2013-06-03'), 
    6 => array('id_cra' => '4592', 'temps' => '03:30:00', 'date' => '2013-06-03')
);

$tmp = array();
foreach($data as $k=>$r){
    $tmp[] = $r['date'];
}
array_multisort($tmp,SORT_DESC,$data);

echo '<pre>',print_r($data),'</pre>';

但现在想为每一天添加时间。这并不难，但你会失去id_cra价值。因此，对于下面的示例，我刚刚创建了一个新数组。如果您想要这样做，您应该能够使用这些信息将其重新构建到您的原始数组中。

date_default_timezone_set('America/New_York'); //set timezone
$midnight = mktime(0,0,0,date("n"),date("j"),date("Y")); // create a constant
$times = array();
foreach($data as $d){
     // get number of secs since const
    $time = strtotime(date("Y-m-d",$midnight).' '.$d['temps']) - $midnight;

    if(isset($times[$d['date']])){
        $times[$d['date']] += $time; // if day exists add secs
    }else{
        $times[$d['date']] = $time; // else set day with cur secs
    }
}

foreach($times as $k=>&$time){
    $time = date("Y-m-d H:i:s",strtotime($k)+$time); // reformat to date
}

echo '<pre>',print_r($times),'</pre>';
于 2013-06-20T13:59:11.390 回答