如何转换这样的数据库表：
变成这样的多维数组？
我尝试了如下递归循环，但无法正确显示。
function cost_centres_format($items)
{
foreach ($items as $item) {
echo $item->name.' - '.$item->parent_id;
echo '<br/>';
$sons = $this->purchase_order_model->get_cost_centre_sons($item->internal_purchase_order_cost_centre_id);
if(count($sons)>0){
$this->cost_centres_format($sons);
}
}
}
【问题讨论】：
标签： php mysql recursion multidimensional-array
这是我的解决方案：
function cost_centres_format($items,$parent_id,$array=array()) {
foreach($items as $item) {
if($item->parent_id == $parent_id) {
$array[] = $item;
if($item->internal_purchase_order_cost_centre_id>0) {
$array = cost_centres_format($items,$item->internal_purchase_order_cost_centre_id,$array);
}
}
}
return $array;
}
$array = cost_centres_format($items,0);
由于其原始订单，柴油 (id:5) 将低于车辆维护 (id:4)。您可以按名称进行额外排序，但在您的示例中，Capital (id:3) 低于 Overheads (id:2)。
【讨论】：
上面的代码不会产生多维数组，而是像这样产生一维数组：
Array
(
[0] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 1
[name] => Direct Expenses
[parent_id] => 0
)
[1] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 4
[name] => Vehicle Maintenance
[parent_id] => 1
)
[2] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 9
[name] => CN09 AKO
[parent_id] => 4
)
[3] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 10
[name] => DY52 BYO
[parent_id] => 4
)
[4] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 14
[name] => MX08 MVJ
[parent_id] => 4
)
[5] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 15
[name] => YJ55 TXA
[parent_id] => 4
)
[6] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 5
[name] => Diesel
[parent_id] => 1
)
[7] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 6
[name] => Vehicle Rent
[parent_id] => 1
)
[8] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 11
[name] => Vehicle Repair
[parent_id] => 1
)
[9] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 16
[name] => CN09 AKO
[parent_id] => 11
)
[10] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 17
[name] => DY52 BYO
[parent_id] => 11
)
[11] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 18
[name] => MX08 MVJ
[parent_id] => 11
)
[12] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 19
[name] => YJ55 TXA
[parent_id] => 11
)
[13] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 2
[name] => Overheads
[parent_id] => 0
)
[14] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 12
[name] => Internet Service
[parent_id] => 2
)
[15] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 13
[name] => Warehouse Rent
[parent_id] => 2
)
[16] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 3
[name] => Capital
[parent_id] => 0
)
[17] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 7
[name] => New Stock
[parent_id] => 3
)
[18] => stdClass Object
(
[internal_purchase_order_cost_centre_id] => 8
[name] => New Vehicle
[parent_id] => 3
)
)
【讨论】：