troubleshooting Question

incremental naming/numbering of images and thumbnails

Avatar of nascent1
nascent1Flag for Canada asked on
21 Comments2 Solutions793 ViewsLast Modified:
The code below uploads an image and generates a thumbnail. It works perfectly. (It's from a tutorial I'm working my way through.)

Currently, the names for the image and thumbnail are given random names, such as "809abc8134nfnf98348875fcdfsdfef.jpg" and I would prefer to have the images named incrementally "item1.jpg", "thumb1.jpg", "item2.jpg", "thumb2.jpg", etc.

Can you please explain how I would do that?

function uploadProductImage($inputName, $uploadDir)
    $image     = $_FILES[$inputName];
    $imagePath = '';
    $thumbnailPath = '';
    // if a file is given
    if (trim($image['tmp_name']) != '') {
        $ext = substr(strrchr($image['name'], "."), 1); //$extensions[$image['type']];

        // generate a random new file name to avoid name conflict
        $imagePath = md5(rand() * time()) . ".$ext";
        list($width, $height, $type, $attr) = getimagesize($image['tmp_name']);

        // make sure the image width does not exceed the
        // maximum allowed width
            $result    = createThumbnail($image['tmp_name'], $uploadDir . $imagePath, MAX_PRODUCT_IMAGE_WIDTH);
            $imagePath = $result;
        } else {
            $result = move_uploaded_file($image['tmp_name'], $uploadDir . $imagePath);
        if ($result) {
            // create thumbnail
            $thumbnailPath =  md5(rand() * time()) . ".$ext";
            $result = createThumbnail($uploadDir . $imagePath, $uploadDir . $thumbnailPath, THUMBNAIL_WIDTH);
            // create thumbnail failed, delete the image
            if (!$result) {
                unlink($uploadDir . $imagePath);
                $imagePath = $thumbnailPath = '';
            } else {
                $thumbnailPath = $result;
        } else {
            // the product cannot be upload / resized
            $imagePath = $thumbnailPath = '';

    return array('image' => $imagePath, 'thumbnail' => $thumbnailPath);
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