在PHP中合并具有相同id值的数组元素

Question

I have the follow array in PHP. Id and Total key are the same for the same Id values.

Array
(
    [0] => Array
        (
            [id]    => 1
            [total] => 100
            [line]  => books
            [value] => 10
        )
    [1] => Array
        (
            [id]    => 1
            [total] => 100
            [line]  => cars
            [value] => 50
        )
    [2] => Array
        (
            [id]    => 1
            [total] => 100
            [line]  => cover
            [value] => 30
        )
    [3] => Array
        (
            [id]    => 2
            [total] => 80
            [line]  => books
            [value] => 5
        )
    [4] => Array
        (
            [id]    => 2
            [total] => 80
            [line]  => cover
            [value] => 35
        )
    [5] => Array
        (
            [id]    => 2
            [total] => 80
            [line]  => cars
            [value] => 40
        )

)

And I would like to merge Line and Value element inside an array. To illustrate the result I am looking is the follow array.

Array
(
    [0] => Array
        (
            [id]      => 1
            [total]   => 100
            [details] => Array
               (
                   [0] => Array
                      (
                         [line]  => books
                         [value] => 10
                      )
                   [1] => Array
                      (
                         [line]  => cars
                         [value] => 50
                      )
                   [2] => Array
                      (
                         [line]  => cover
                         [value] => 30
                      )
               ) 
        )                      

    )
    [1] => Array
        (
            [id]      => 2
            [total]   => 80
            [details] => Array
               (
                   [0] => Array
                      (
                         [line]  => books
                         [value] => 5
                      )
                   [1] => Array
                      (
                         [line]  => cars
                         [value] => 35
                      )
                   [2] => Array
                      (
                         [line]  => cover
                         [value] => 40
                      )
               ) 
        )                      
    )

I am working with PHP. Thank you for all your help.

Answer 1

well bored enough to do your job\\homework for you:

$out=array();
foreach($array as $x){
  $out[$x['id']]['id']=$x['id'];
  $out[$x['id']]['total']=$x['total'];
  $out[$x['id']]['details'][]=array('line'=>$x['line'],'value'=>$x['value']);
}

NOTES:

• use id as the out key, could of added our own, but this will work fine.
• id and total will be overwritten on each loop (per key) but that's no big deal
• line\\value are incremented in to there own details array