1.二维数组中某个重复字段的值只保留此字段第一次出现的值，后来出现的值进行修改
$oIdLists = array_column($data,"oId"); //$data为需要处理的二维数组
$oIdList = array_unique($oIdLists);
$repeat = array_diff_assoc($oIdLists,$oIdList);
$new = array_keys($repeat);
foreach($new as $k => $v){
$data[$v]["oId"] = 0;
}
return $data;