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我目前有一个数据库连接和一个配置文件模型。我可以像这样将用户名保存在控制器中

if(isset($_POST['action'])){
        $user= $this->model('User');
        $user->username= $_POST['username'];

如何将个人资料图片保存给该用户？我努力了

        $file = $_FILES['file']; //get file
        $file_name = $_FILES['file']['name']; //get file name
        $file_tempDir = $_FILES['file']['tmp_name']; // temp name
        $file_size = $_FILES['file']['size']; // file size
        $file_errorMsg = $_FILES['file']['error']; // error msg
        $file_type = $_FILES['file']['type']; //file type
        $file_convertedExtension = strtolower(pathinfo($file_name, PATHINFO_EXTENSION)); // to lower to avoid upper case extensions

        //Allow files to have the same name
        $file_uniq = uniqid('', true). "." . $file_convertedExtension;

        // Make sure extension is allowed*
        if(in_array($file_convertedExtension, $possible_extensions)){
            $file_saveDestination = '../images/' . $file_uniq;    
            move_uploaded_file($file_tempDir, $file_saveDestination);
        }
        else{
            echo "This type of file extension is not allowed.";
        }

$user->user_images= $file_uniq;

但这不起作用。$user->user_images = $_POST['file']似乎添加到数据库中，但我不知道它是否正确

还有 move_uploaded_file($file_tempDir, $file_saveDestination); 似乎没有在目的地保存任何东西

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