Gagal Simpan Gambar lebih dari 2MB

Assalamualaikum Warahmatullahi Wabarakatuh...bapak ibu para master saya mau simpan gambar menggunakan fungsi seperti dibawah, bagaimana ya caranya supaya file yang besar bisa tersimpan atau terkompress, kendala namafile bisa tersimpan tapi file gambarnya tidak tersimpan didirektori gambar. mohon masukkannya dan petunjuknya
 
function Uploadkegiatan($fupload_name){
  //direktori gambar
  $vdir_upload = "../../foto_kegiatan/";
  $vfile_upload = $vdir_upload . $fupload_name;
  $imageType = $_FILES["fupload"]["type"];
 
  //Simpan gambar dalam ukuran sebenarnya
  move_uploaded_file($_FILES["fupload"]["tmp_name"], $vfile_upload);
 
  //identitas file asli
  switch($imageType) {
		case "image/gif":
			$im_src=imagecreatefromgif($vfile_upload); 
			break;
	    case "image/pjpeg":
		case "image/jpeg":
		case "image/jpg":
			$im_src=imagecreatefromjpeg($vfile_upload); 
			break;
	    case "image/png":
		case "image/x-png":
			$im_src=imagecreatefrompng($vfile_upload); 
			break;
  }
 
  $src_width = imageSX($im_src);
  $src_height = imageSY($im_src);
 
  //Simpan dalam versi besar 400 pixel
  //Set ukuran gambar hasil perubahan
  if($src_width>=550){
  $dst_width = 550;
  } else {
  $dst_width = $src_width;
  }
  $dst_height = ($dst_width/$src_width)*$src_height;
 
  //proses perubahan ukuran
  $im = imagecreatetruecolor($dst_width,$dst_height);
  imagecopyresampled($im, $im_src, 0, 0, 0, 0, $dst_width, $dst_height, $src_width, $src_height);
 
  //Simpan gambar
  switch($imageType) {
		case "image/gif":
  			imagegif($im,$vdir_upload.$fupload_name);
			break;
	    case "image/pjpeg":
		case "image/jpeg":
		case "image/jpg":
  			imagejpeg($im,$vdir_upload.$fupload_name);
			break;
	    case "image/png":
		case "image/x-png":
  			imagepng($im,$vdir_upload.$fupload_name);
			break;
  }
 
 
  //Simpan dalam versi small 200 pixel
  //Set ukuran gambar hasil perubahan
 
  $dst_width2 = 200;
  $dst_height2 = ($dst_width2/$src_width)*$src_height;
 
  //proses perubahan ukuran
  $im2 = imagecreatetruecolor($dst_width2,$dst_height2);
  imagecopyresampled($im2, $im_src, 0, 0, 0, 0, $dst_width2, $dst_height2, $src_width, $src_height);
 
  //Simpan gambar
  switch($imageType) {
		case "image/gif":
  			imagegif($im2,$vdir_upload . "small_" . $fupload_name);
			break;
	    case "image/pjpeg":
		case "image/jpeg":
		case "image/jpg":
  			imagejpeg($im2,$vdir_upload . "small_" . $fupload_name);
			break;
	    case "image/png":
		case "image/x-png":
  			imagepng($im2,$vdir_upload . "small_" . $fupload_name);
			break;
  }
 
  //Hapus gambar di memori komputer
  imagedestroy($im_src);
  imagedestroy($im);
  imagedestroy($im2);
}