请问数组怎么多条件排序

array(
'000-00'=>array(
'qty'=>20,
'price'=>200
),
'0001-00'=>array(
'qty'=>10,
'price'=>100
),
'0002-00'=>array(
'qty'=>30,
'price'=>50
)

)

请问怎么样先按qty由小到大排序，然后按Price由大到小排序。

回复讨论(解决方案)

$a = array(       '000-00'=>array(                                    'qty'=>20,                                    'price'=>200                                  ),       '0001-00'=>array(                                     'qty'=>10,                                    'price'=>100                                  ),      '0002-00'=>array(                                      'qty'=>30,                                     'price'=>50                                 ) );foreach($a as $k=>$v) {  $qty[] = $v['qty'];  $price[] = $v['price'];}array_multisort($qty, $price, SORT_DESC, $a);print_r($a);

Array(    [0001-00] => Array        (            [qty] => 10            [price] => 100        )    [000-00] => Array        (            [qty] => 20            [price] => 200        )    [0002-00] => Array        (            [qty] => 30            [price] => 50        ))

$a = array(       '000-00'=>array(                                    'qty'=>20,                                    'price'=>200                                  ),       '0001-00'=>array(                                     'qty'=>10,                                    'price'=>100                                  ),      '0002-00'=>array(                                      'qty'=>30,                                     'price'=>50                                 ) );foreach($a as $k=>$v) {  $qty[] = $v['qty'];  $price[] = $v['price'];}array_multisort($qty, $price, SORT_DESC, $a);print_r($a);

Array(    [0001-00] => Array        (            [qty] => 10            [price] => 100        )    [000-00] => Array        (            [qty] => 20            [price] => 200        )    [0002-00] => Array        (            [qty] => 30            [price] => 50        ))

这个函数真方便！

请问子数组再多几个是不是也可以，多几个后好像不行了

array(
'000-00'=>array(
'qty'=>20,
'price'=>200，
‘status’=>1,
'lirun'=>0.21,
'name'=>'sdff',
),
'0001-00'=>array(
'qty'=>10,
'price'=>100,
‘status’=>1,
'lirun'=>0.22,
'name'=>'erw',
),
'0002-00'=>array(
'qty'=>30,
'price'=>50,
‘status’=>1,
'lirun'=>0.23,
'name'=>'sdfd',
)

)

可以了，原来变量名要跟数组里面的名称要一样才行