Image dimensions validation before sending

I tried with this code, but it seems to stop the form from uploading.

add_filter('wpcf7_validate_file*', 'cf7_pre_validate_image_strict', 20, 2);

function cf7_pre_validate_image_strict($result, $tag) {

    if ($tag->name !== 'catch_image') {
        return $result;
    }

    if (empty($_FILES['catch_image']['tmp_name'])) {
        $result->invalidate($tag, "No file uploaded.");
        return $result;
    }

    $file = $_FILES['catch_image']['tmp_name'];

    if (!is_uploaded_file($file)) {
        $result->invalidate($tag, "Upload failed. Please try again.");
        return $result;
    }

    // sikker læsning (vigtig: undgå getimagesize crash)
    $info = @getimagesize($file);

    if ($info === false || empty($info[0]) || empty($info[1])) {
        $result->invalidate($tag, "Invalid image file.");
        return $result;
    }

    $width = (int) $info[0];
    $height = (int) $info[1];

    if ($width < 4000 || $height < 3000) {
        $result->invalidate(
            $tag,
            "Image too small. Minimum 4000x3000px required."
        );
    }

    return $result;
}

You can see the basic test form here:
https://specimenbaits.com/add-catch-report/
I have disabled my validation code.

This is the form field:
[file* catch_image filetypes:jpg|jpeg|heic limit:20mb]

Right now the form is set up to email and it works fine without the validation.
I will set it up to store the results and attachments in the database and send notification emails without attachment.

• This reply was modified 8 hours, 6 minutes ago by henrik.arvedsen.
• This reply was modified 7 hours, 48 minutes ago by henrik.arvedsen.