相关疑难解决方法(0)

我将CSV数据加载到多维数组中.这样,每个"行"都是一个记录,每个"列"包含相同类型的数据.我正在使用下面的函数加载我的CSV文件.

function f_parse_csv($file, $longest, $delimiter)
{
  $mdarray = array();
  $file    = fopen($file, "r");
  while ($line = fgetcsv($file, $longest, $delimiter))
  {
    array_push($mdarray, $line);
  }
  fclose($file);
  return $mdarray;
}

我需要能够指定要排序的列,以便重新排列行.其中一列包含格式为的日期信息,Y-m-d H:i:s我希望能够以最近的日期为第一行进行排序.

I've had trouble with the examples in the PHP manual, so I'd like to ask this here...

I have an array of objects.. Is there a way to sort it based on the contents of the object?

For example, my array is:

Array
(
    [0] => stdClass Object
        (
            [id] => 123
            [alias] => mike
        )

    [1] => stdClass Object
        (
            [id] => 456
            [alias] => alice
        )

    [2] => stdClass Object
        (
            [id] => 789
            [alias] => zeke
        ) …

我有一个像这样的数组:

Array
(
    [0] => Array
        (
            [title] => some title
            [time] => 1279231500
        )

    [1] => Array
        (
            [title] => some title 2
            [time] => 1279231440
        )

    [2] => Array
        (
            [title] => some title 3
            [time] => 1279229880
        )
)

我怎么能根据时间对它进行排序？

好的,我有一个用于传输名称的数组,它看起来像这样:

array(2) {
  [0]=>
  array(3) {
    ["firstName"]=>
    string(3) "Joe"
    ["lastName"]=>
    string(5) "Black"
    ["uid"]=>
    int(3225)
  }
  [1]=>
  array(3) {
    ["firstName"]=>
    string(4) "John"
    ["lastName"]=>
    string(3) "Doe"
    ["uid"]=>
    int(3516)
  }
}

现在,我该如何对这个数组进行排序lastName？

是的,我已经搜索并尝试了许多技术,但似乎没有任何工作.这是我的数组:

Array
(
    [0] => stdClass Object
        (
            [id] => 119
            [name] => Business3
            [start_date] => 1338789600
            [end_date] => 1354604400
        )

    [1] => stdClass Object
        (
            [id] => 153
            [name] => Business1
            [start_date] => 1338962400
            [end_date] => 1370498400
        )

    [2] => stdClass Object
        (
            [id] => 135
            [name] => Business2  
            [start_date] => 1339653600
            [end_date] => 1356937200
        )
)

我基本上想要通过名称键对它进行排序,但我在Stackoverflow上尝试的每个函数似乎都不起作用,因为我得到一个没有错误的空白页面.

我试过这个:

function array_sort_by_column(&$arr, $col, $dir = SORT_ASC) {
    $sort_col = array();
    foreach ($arr as $key=> $row) {
        $sort_col[$key] = $row[$col];
    } …

我试图使用array_multisort()函数...... 在子数组的基础上对数组进行排序......

在尝试时;

print_r($mar); echo '<br>';
$arr2 = array_multisort($mar, array('wek'=>SORT_ASC));
print_r($arr2);

得到错误 array_multisort(): Array sizes are inconsistent

排序前的输出是

Array ( 
    [0] => Array ( [dat] => 1 [wek] => 5 [mac] => A100 [mcr] => #00c8ff ) 
    [1] => Array ( [dat] => 2 [wek] => 9 [mac] => A100 [mcr] => #00c8ff ) 
    [2] => Array ( [dat] => 5 [wek] => 13 [mac] => A100 [mcr] => #00c8ff ) 
    [3] => Array ( [dat] => 5 …

这是我的数组,如何通过saleref对其进行排序？

Array
(
    [xml] => Array
        (
            [sale] => Array
                (
                    [0] => Array
                        (
                            [saleref] =>  12345
                            [saleline] =>   1
                            [product] => producta
                            [date] => 19/ 3/10
                            [manifest] =>       0
                            [qty] =>     1
                            [nextday] => 
                            [order_status] => 
                        )

                    [1] => Array
                        (
                            [saleref] =>  12344
                            [saleline] =>   1
                            [product] => productb
                            [date] => 18/ 3/10
                            [manifest] =>   11892
                            [qty] =>     1
                            [nextday] => 
                            [order_status] => 
                        )