Php Gif文件上传和调整大小

Question

我可以保存上传的gif文件，但我想调整它的大小并减小文件大小。我该怎么办？

$dstName = "../files/gif/";
$temp = explode(".", $file_name);
$filename = round(microtime(true)) . $tarihiYazdir . '.gif';
$src = $_FILES["image"]["tmp_name"]; // source path
$des = $dstName.$filename;
move_uploaded_file($src,$des);