html表单上传file，php获取然后保存到数据库中，类型blob

<form action="../php/teest.php" method="post">
        <input type="file" name="pic"/>
            <input type="submit" value="提交"/>
    </form>

    php:
    require_once('mysql_helper.php');
$pic = $_POST['pic'];
$path = './Users/e-bag4/Desktop'. $_FILES['pic']['name'];
if (move_uploaded_file($_FILES['pic']['tmp_name'],$path)) { 
$sql="insert into e_user(pic)values('$path')";
    if(execute_data($sql)){ 
        echo "上传成功!!";
    }else{
        echo "文件上传失败!!";    
    }
}

    我想问一下我这代码中需要怎么改进一下