<?php
    function _makeThumbnail($image, $dest, $ext)
    {
        $imageType = exif_imagetype($image);

        switch ($imageType)
        {
            case IMAGETYPE_JPEG:
                $img = imagecreatefromjpeg($image);
                break;
            case IMAGETYPE_PNG:
                $img = imagecreatefrompng($image);
                break;
            case IMAGETYPE_GIF:
                $img = imagecreatefromgif($image);
                break;
            default:
                throw new Exception('Bad extension');
        }

        $width  = imagesx($img);
        $height = imagesy($img);

            list($widthX, $heightX) = array('130', '130');

            if ($width > $widthX || $height > $heightX)
            {
                if ($height > $width)
                {
                    $ratio = $heightX / $height;
                    $newHeight = $heightX;
                    $newWidth = $width * $ratio;
                }
                else
                {
                    $ratio = $widthX / $width;
                    $newWidth = $widthX;
                    $newHeight = $height * $ratio;
                }

                $previewImg = imagecreatetruecolor($newWidth, $newHeight);

                $palsize = ImageColorsTotal($img);
                for ($i = 0; $i < $palsize; $i++)
                {
                    $colors = ImageColorsForIndex($img, $i);
                    ImageColorAllocate($previewImg, $colors['red'], $colors['green'], $colors['blue']);
                }

                imagecopyresized($previewImg, $img, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);

                $name = $dest;
                switch ($imageType)
                {
                    case IMAGETYPE_JPEG:
                        imagejpeg($previewImg, $name . '.' . $ext, 100);
                        break;
                    case IMAGETYPE_PNG:
                        imagesavealpha($previewImg, true);
                        imagepng($previewImg, $name . '.' . $ext, 9);
                    case IMAGETYPE_GIF:
                        imagegif($previewImg, $name . '.' . $ext);
                        break;
                    default:
                        throw new Exception();
                }
            }
        imagedestroy($previewImg);
        imagedestroy($img);
    }