在PHP中有以下数组.Id和Total键对于相同的Id值是相同的.数组如下：
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
)
想在一个数组中合并Line和Value元素.下面是想实现的效果：
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
)
)
)
)
实现代码如下：
$out=array();
foreach($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']);
}
笔记:使用id作为out键,可以添加我们自己的,但这将工作正常.
id和total将在每个循环(每个键)上被覆盖,但这没什么大不了的
line\value递增到自己的details数组
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