需要帮助解决图像消失后再次提交表格

我有多个图像上传选项的形式，他们工作良好，并在mysql数据库列更新文件名?

当我上传image1然后图像移动到服务器上，它也显示在html table columns旁边，现在的问题是，当我上传image with file option2后表单提交然后image1 which is on the next to the image1 file option将消失，在mysql database image1 columns will be blank ?

多个图片上传功能

 $id=$_REQUEST['id'];
 if(isset($_POST['submit']))
 {
 if (!empty($_FILES['image']['name'])) 
 {
 $rnd_1 = rand(11111,99999); 
 $file_name= $rnd_1.'_'.$_FILES['image']["name"];
 $file_path = "uploads/"; 
 $image = new imgMark(); 
 $image->font_path = "arial.ttf"; 
 $image->font_size = 25; 
 $image->water_mark_text = "© www.edge.pk";  
 $image->color = 'CC003E'; 
 $image->opacity = 50; 
 $image->rotation = 0;
 if($image->convertImage('image', $file_name, $file_path))
 $demo_image = $image->img_path;
 }
 if (!empty($_FILES['image1']['name'])) 
 { 
 $rnd_1 = rand(11111,99999); 
 $file_name= $rnd_1.'_'.$_FILES['image1']["name"];
 $file_path = "uploads/"; 
 $image = new imgMark(); 
 $image->font_path = "arial.ttf"; 
 $image->font_size = 35; 
 $image->water_mark_text = "© www.edge.pk";  
 $image->color = 'CC003E'; 
 $image->opacity = 50; 
 $image->rotation = 0;
 if($image->convertImage('image1', $file_name, $file_path))
 $demo_image2 = $image->img_path;
 }
 if (!empty($_FILES['image2']['name'])) 
 { 
 $rnd_1 = rand(11111,99999); 
 $file_name= $rnd_1.'_'.$_FILES['image2']["name"];
 $file_path = "uploads/"; 
 $image = new imgMark(); 
 $image->font_path = "arial.ttf"; 
 $image->font_size = 35; 
 $image->water_mark_text = "© www.edge.pk";  
 $image->color = 'CC003E'; 
 $image->opacity = 50; 
 $image->rotation = 0;
 if($image->convertImage('image2', $file_name, $file_path))
 $demo_image3 = $image->img_path; 
 }

UPDATE products SET 
image='$demo_image',addimage1='$demo_image2',addimage2='$demo_image3'
WHERE id='$id'
}

Select Images Query

$query1=mysql_query("select images,addimages1,addimages2 from products 
where id='$id' ")or die("query");
$row2=mysql_fetch_array($query1);
<form method="post" enctype="multipart/form-data"> 
Image Upload Option1
<input type="file" name="image" id="image" />
<img src="<?php echo $image['image'] ?>" width="150" height="150" />
Image Upload Option2
<input  type="file" name="image1" id="image1"/>
<img src="<?php echo $image['addimage1'] ?>" width="150" height="150" />
Image Upload Option3
<input  type="file" name="image2" id="image2"/>
<img src="<?php echo $image['addimage2'] ?>" width="150" height="150" />
<input type="submit" class="bg" name="submit" />
</form>