php array_combine 把array的默认键改成指定的字符串

array(2) {
  [0] => array(6) {
    [0] => string(1) "1"
    [1] => string(10) "1470650276"
    [2] => string(12) "测试人员"
    [3] => string(9) "vpn出售"
    [4] => string(20) "出售10个包月VPN"
    [5] => string(6) "100000"
  }
  [1] => array(6) {
    [0] => string(1) "2"
    [1] => string(10) "1470650739"
    [2] => string(12) "测试人员"
    [3] => string(9) "服务器"
    [4] => string(28) "双核CPU2G内存40SDD硬盘"
    [5] => string(5) "15000"
  }
}

array(2) {
  [0] => array(6) {
    ["record_id"] => string(1) "1"
    ["record_create_time"] => string(10) "1470650276"
    ["record_create_people"] => string(12) "测试人员"
    ["record_name"] => string(9) "vpn出售"
    ["record_comment"] => string(20) "出售10个包月VPN"
    ["record_money"] => string(6) "100000"
  }
  [1] => array(6) {
    ["record_id"] => string(1) "2"
    ["record_create_time"] => string(10) "1470650739"
    ["record_create_people"] => string(12) "测试人员"
    ["record_name"] => string(9) "服务器"
    ["record_comment"] => string(28) "双核CPU2G内存40SDD硬盘"
    ["record_money"] => string(5) "15000"
  }
}

$key = array(‘a‘,‘b‘,‘c‘,‘d‘);
$array1 =array(‘0‘ => array(‘0‘=>‘first‘,‘1‘=>‘two‘,‘2‘=>‘hp‘,‘3‘=>‘aaa‘),
               ‘1‘ => array(‘0‘=>‘first‘,‘1‘=>‘two‘,‘2‘=>‘hp‘,‘3‘=>‘aaa‘));
foreach($array1 as $kay=>$val  ){
  $array1[$kay] = array_combine($key,$val);

}
var_dump($array1);