Zend文件传输：上传单个图像时出现问题

Question

I cannot understand how ->isuploaded() works. I am suppose to upload six images to display on my index page. Now the problem is, in my update function, if I upload only one or two image $upload->isUploaded() returns a false value, but if I decide to update all six of them it returns a true value. How do I deal with this problem? Am i missing out something here?

Here is my zend file transfer upload

$upload = new Zend_File_Transfer();
$upload->addValidator('Count', false, array('min' =>1, 'max' => 6)) 
               ->addValidator('Size', false, array('max' => '1Mb'))
               ->addValidator('ImageSize', false, array('minwidth' => 50,
                                                        'maxwidth' => 1000,
                                                        'minheight' => 50,
                                                        'maxheight' => 1000));

if ($upload->isUploaded()) $hasImage = true;

Answer 1

Use isValid() instead.

if ($upload->isValid()) {
    // success!
} else {
    // failure!
}

Once you know your upload passed the validators, then start processing the images.