Question

我在数组Array ( [0] => stdClass Object ( [model] => Peugeot 308 SW ) [1] => stdClass Object ( [model] => Citroen C-Elysee ) [2] => stdClass Object ( [model] => Nissan Evalia ) [3] => stdClass Object ( [model] => Renault Trafic 9-os ) )

中得到了一个查询结果

我想为每个对象制作一个变量，如：

$ Peugeot 308 SW
$ Citroen C-Elysee
$ Nissan Evalia

但我不知道该怎么做。谢谢

Answer 1

我强烈建议您使用数组本身，而不是保存在不同的单变量中。

但是如果你仍然想这样做，变量的数量必须是有限的，可以通过以下方式定义：

public async Task<T> ReadFromXML<T>(string gamename, string filename)
    {
        string filepath = _appFolder + @"\" + gamename + @"\" + filename + ".xml";
        T objectFromXML = default(T);
        var srializer = new XmlSerializer(typeof(T));
        Item oneDItem = null;
        int casenum = 0;
        //_userDrive is the IOneDriveClient
        if (_userDrive != null && _userDrive.IsAuthenticated)
        {
            try
            {
                oneDItem = await _userDrive.Drive.Special.AppRoot.ItemWithPath(filepath).Request().GetAsync();
                if (oneDItem != null) casenum += 1;
            }
            catch (OneDriveException)
            { }
        }
        StorageFile localfile = null;
        try
        {
            localfile = await ApplicationData.Current.LocalFolder.GetFileAsync(filepath);
            if (localfile != null) casenum += 2;
        }
        catch (FileNotFoundException)
        { }
        switch (casenum)
        {
            case 0:
                //neither exist. Throws exception to tbe caught by the calling method, which should then instantiate a new object of type <T>
                throw new FileNotFoundException();
            case 1:
                //OneDrive only - should copy the stream to a new local file then return the object
                StorageFile writefile = await ApplicationData.Current.LocalFolder.CreateFileAsync(filepath, CreationCollisionOption.ReplaceExisting);
                using (var newlocalstream = await writefile.OpenStreamForWriteAsync())
                {
                    using (var oneDStream = await _userDrive.Drive.Special.AppRoot.ItemWithPath(filepath).Content.Request().GetAsync())
                    {
                        oneDStream.CopyTo(newlocalstream);
                    }
                }
                using (var newreadstream = await writefile.OpenStreamForReadAsync())
                { objectFromXML = (T)srializer.Deserialize(newreadstream); }
                break;
            case 2:
                //Local only - returns the object
                using (var existinglocalstream = await localfile.OpenStreamForReadAsync())
                { objectFromXML = (T)srializer.Deserialize(existinglocalstream); }
                break;
            case 3:
                //Both - compares last modified. If OneDrive, replaces local data then returns the object
                var localinfo = await localfile.GetBasicPropertiesAsync();
                var localtime = localinfo.DateModified;
                var oneDtime = (DateTimeOffset)oneDItem.FileSystemInfo.LastModifiedDateTime;
                switch (oneDtime > localtime)
                {
                    case true:
                        using (var newlocalstream = await localfile.OpenStreamForWriteAsync())
                        {
                            using (var oneDStream = await _userDrive.Drive.Special.AppRoot.ItemWithPath(filepath).Content.Request().GetAsync())
                            { oneDStream.CopyTo(newlocalstream); }
                        }
                        using (var newreadstream = await localfile.OpenStreamForReadAsync())
                        { objectFromXML = (T)srializer.Deserialize(newreadstream); }
                        break;
                    case false:
                        using (var existinglocalstream = await localfile.OpenStreamForReadAsync())
                        { objectFromXML = (T)srializer.Deserialize(existinglocalstream); }
                        break;
                }
                break;
        }
        return objectFromXML;
    }

我希望你能得到的是什么？

Answer 2

你有array of objects。试试这个......

$car0 = $array[0]->model; //outputs Peugeot 308 SW
$car1 = $array[1]->model; //outputs Citroen C-Elysee
$car2 = $array[2]->model; //outputs Nissan Evalia
$car3 = $array[3]->model; //outputs Renault Trafic 9-os

如何将查询结果分隔为var Codeigniter

2 个答案: