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ramzes,

$file = isset ($_GET['file']);
if(preg_match('#^(*.)\.(jpe?g|png|gif)$#i', $file)){
        $sizs = GetImageSize(' . $file . ');
        $razm = 200;
        $width = $sizs[0];
        $height = $sizs[1];
        $x_ratio = $razm / $width;
        $y_ratio = $razm / $height;
        if (($width <= $razm) && ($height <= $razm)) {
            $tn_width = $width;
            $tn_height = $height;
        }
        else
            if (($x_ratio * $height) < $razm) {
                $tn_height = ceil($x_ratio * $height);
                $tn_width = $razm;
            }
            else {
                $tn_width = ceil($y_ratio * $width);
                $tn_height = $razm;
        }
   
                $im = ImageCreateFromJPEG(' . $file . ');
   
        $im1 = imagecreatetruecolor($tn_width, $tn_height);
        imagecopyresized($im1, $im, 0, 0, 0, 0, $tn_width, $tn_height, $width, $height);
        // Передача изображения в Браузер
        ob_start();
        imageJpeg($im1, NULL, 60);
        ImageDestroy($im);
        imagedestroy($im1);
        header("Content-Type: image/jpeg");
        header('Content-Disposition: inline; filename=thumbinal.jpg');
        header('Content-Length: ' . ob_get_length());
        ob_end_flush();
    
}