处理一个多维数组

$a=Array
(
[0] => Array
(
[0] => Array
(
[pname1] => 市场营销
)

[1] => Array
(
[pname] => 营销传播
)

[2] => Array
(
[pname] => 营销战略
)

)

[1] => Array
(
[0] => Array
(
[pname1] => 市场营销
)

[1] => Array
(
[pname] => 营销传播
)

)
[2] => Array
(
[0] => Array
(
[pname1] => 品牌管理
)

[1] => Array
(
[pname] => 品牌战略
)

[2] => Array
(
[pname1] => 企业文化
)

[3] => Array
(
[pname] => 企业文化建设
)

)

）
处理成：
$a=array(array("pname1"=>"2","市场营销"=>array("营销传播","营销战略","营销传播")),array("pname1"=>"1","品牌管理"=>array("品牌战略","企业文化","企业文化建设")));
怎么处理呀
求大侠告知