数组 php array_multisort处置

$money = array (           0 =>array (        'money' => '21',    'time' => '2012-10-18', ),           1 =>array (        'money' => '28',    'time' => '2012-10-17', ),           2 =>array (        'money' => '92',    'time' => '2012-10-16', ),           3 =>array (        'money' => '428',   'time' => '2012-10-15', ),           4 =>array (        'money' => '776',    'time' => '2012-10-14',),           5 =>array (        'money' => '298',    'time' => '2012-10-13',),           7 =>array (        'money' => '112',    'time' => '2012-10-11',),           8 =>array (        'money' => '199',     'time' => '2012-10-10',),);$money2 = array (           0 =>array (   'gamemoney' => '2',   'time' => '2012-10-16',),           1 =>array (   'gamemoney' => '50',   'time' => '2012-10-13',),           2 =>array (   'gamemoney' => '75',   'time' => '2012-10-12',),     );require('Debug.php' );foreach ($money as &$val ){     $val['gamemoney']='';}foreach ($money2 as & $val2){     $val2['money']='';}$times=array ();foreach ($money as $key => $val3){     array_push($times,$val3['time']);}foreach ($money2 as $key => $val4){     if (in_array( $val4[ 'time'], $times)){            $money_key =  array_search( $val4[ 'time'], $times);            $money[$money_key ]['gamemoney' ] = $val4 ['gamemoney' ];     }else{     array_push($money, array( 'gamemoney'=> $val4[ 'gamemoney'], 'time'=> $val4[ 'time'], 'money'=> '') );     }}foreach($money as $aaaaa){     $timeaa[]=$aaaaa['time'];}array_multisort($timeaa,SORT_DESC, $money);Zend_Debug::dump ($money );