帮忙转化一个数组

Question

有一个这样结构的数组$arr = array(
array('goods_id'=>'1','sku_id'=>'001','zk'=>'0.5'),
array('goods_id'=>'1','sku_id'=>'002','zk'=>'0.5'),
array('goods_id'=>'1','sku_id'=>'006','zk'=>'0.5'), array('goods_id'=>'2','sku_id'=>'003','zk'=>'0.8'),
array('goods_id'=>'2','sku_id'=>'004','zk'=>'0.8'),
);转化成$_arr = array(
'1' =>array(
'zk'=>'0.5',
'mx'=>array(
array('sku_id'=>'001','zk'=>'0.5'),
array('sku_id'=>'002','zk'=>'0.5'),
array('sku_id'=>'006','zk'=>'0.5'),
),
'2' =>array(
'zk'=>'0.8',
'mx'=>array(
array('sku_id'=>'003','zk'=>'0.8'),
array('sku_id'=>'004','zk'=>'0.8'),
),
)
);

Answer 1

<?php
$arr = array(
    array('goods_id'=>'1','sku_id'=>'001','zk'=>'0.5'),
    array('goods_id'=>'1','sku_id'=>'002','zk'=>'0.5'),
    array('goods_id'=>'1','sku_id'=>'006','zk'=>'0.5'),    array('goods_id'=>'2','sku_id'=>'003','zk'=>'0.8'),
    array('goods_id'=>'2','sku_id'=>'004','zk'=>'0.8'),
);foreach($arr as $v){
$tmp[$v['zk']]['zk']=$v['zk'];
$tmp[$v['zk']]['mx'][]=array_splice($v,1,2);
}
print_r(array_values($tmp));