无法在 Amazon ec2 Linux 服务器中使用 imagecopyresize

错误仅发生在此行if(!imagecopyresized($new_image, $old_image, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height)){return false;}

我已经经历了很多解决方案，没有任何适合，是否有任何选择或替代解决方案？

function makeThumbnails($updir, $img, $id, $name, $extension, $MaxWe = 150, $MaxHe = 150) {
    ini_set ( "memory_limit", "48M");
    $arr_image_details = getimagesize($img);
    $width = $arr_image_details[0];
    $height = $arr_image_details[1];
    $percent = 100;
    if ($width > $MaxWe)
        $percent = floor(($MaxWe * 100) / $width);
    if (floor(($height * $percent) / 100) > $MaxHe)
        $percent = (($MaxHe * 100) / $height);
    if ($width > $height) {
        $newWidth = $MaxWe;
        $newHeight = round(($height * $percent) / 100);
    } else {
        $newWidth = round(($width * $percent) / 100);
        $newHeight = $MaxHe;
    }
    if ($arr_image_details[2] == 1) {
        $imgt = "ImageGIF";
        $imgcreatefrom = "ImageCreateFromGIF";
    }
    if ($arr_image_details[2] == 2) {
        $imgt = "ImageJPEG";
        $imgcreatefrom = "ImageCreateFromJPEG";
    }
    if ($arr_image_details[2] == 3) {
        $imgt = "ImagePNG";
        $imgcreatefrom = "ImageCreateFromPNG";
    }
    if ($imgt) {
        $old_image = $imgcreatefrom($img);
        $new_image = imagecreatetruecolor($newWidth, $newHeight);
        if ($arr_image_details[2] == 3) {
            imagealphablending($new_image, false);
            imagesavealpha($new_image, true);
        }
        if(!imagecopyresized($new_image, $old_image, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height)){
            return false;
        }
        $imgt($new_image, $updir . "" . $name);
        return true;
  }

}