How to replicate in php

I'm trying to create a function that will replicate/clone/duplicate a product including all it's properties and it's shipping options.

However, I succeeded to duplicate the product but the shipping options are not replicated. See my codes below;

Any help will be highly appreciated

Thanks

public function CreateProductPost(Request $request){
  if (Auth::user()->vendor == false) {
    return redirect()->route('profile');
  }
  if ($request->name == null) {
    session()->flash('errormessage','Product name is required');
    return redirect()->back()->withInput();
  }
  if (mb_strlen($request->name) > 60) {
    session()->flash('errormessage','Product name cannot be longer than 60 characters.');
    return redirect()->back()->withInput();
  }
  if ($request->category_id == null) {
    session()->flash('errormessage','Product category is required');
    return redirect()->back()->withInput();
  }
  if ($request->price == null) {
    session()->flash('errormessage','Product price is required');
    return redirect()->back()->withInput();
  }
  if (!is_numeric($request->price) || $request->price < 0.01) {
    session()->flash('errormessage','Invalid price');
    return redirect()->back()->withInput();
  }
  if ($request->currency == null) {
    session()->flash('errormessage','Product currency is required');
    return redirect()->back()->withInput();
  }
  if (!in_array($request->currency, ['usd', 'eur', 'gbp'])) {
    session()->flash('errormessage','Invalid currency');
    return redirect()->back()->withInput();
  }
  if ($request->inventory == null) {
    session()->flash('errormessage','Product inventory is required');
    return redirect()->back()->withInput();
  }
  if (!is_numeric($request->inventory) || $request->inventory < 1) {
    session()->flash('errormessage','Invalid inventory');
    return redirect()->back()->withInput();
  }
  $category = Category::where('id',$request->category_id)->first();
  if ($category == null) {
    session()->flash('errormessage','Invalid category, choose from given categories');
    return redirect()->back()->withInput();
  }
  if ($request->description == null) {
    session()->flash('errormessage','Product description is required');
    return redirect()->back()->withInput();
  }
  if ($request->fromc == null) {
    session()->flash('errormessage','Product ships from is required');
    return redirect()->back()->withInput();
  }
  if ($request->tocount == null) {
    session()->flash('errormessage','Product ships to is required');
    return redirect()->back()->withInput();
  }
  if ($request->hasFile('image')) {
    $file = $request->file('image');
    $size = $request->file('image')->getSize();
    if ($size > 500000) {
      session()->flash('errormessage','Image is too large');
      return redirect()->back()->withInput();
    }
    if (substr($file->getMimeType(), 0, 5) !== 'image') {
      session()->flash('errormessage','File is not an image');
      return redirect()->back()->withInput();
    }
    if (!$file->isValid()) {
      session()->flash('errormessage','Image is not valid');
      return redirect()->back()->withInput();
    }
  }
  $fe = $request->finalize_early && Auth::user()->fep;
  $shippingoptions = [];
  $shipping = $request->shipping;
  foreach ($shipping as $i => $opt) {
    if (1 == $i and (empty($opt['desc']) or empty($opt['days']) or empty($opt['price']))) {
      session()->flash('errormessage','At least one shipping option is required, fill all the fields.');
      return redirect()->back()->withInput();
    }
    if (!empty($opt['desc']) and !empty($opt['days']) and !empty($opt['price'])) {
      $shippingoptions[] = $opt;
    }
  }
  $product = new Product;
  $product->name = $request->name;
  $product->uniqueid = random_int(10000, 99999);
  $product->category_id = $category->id;
  $product->description = $request->description;
  $product->refund_policy = $request->refund_policy;
  $product->fromc = $request->fromc;
  $product->tocount = $request->tocount;
  $product->price = $request->price;
  $product->currency = $request->currency;
  $product->inventory = $request->inventory;
  if ($request->image !== null) {
    $product->image = $request->image->store('uploads','public');
  }
  $product->buyout = 0;
  $product->fe = $fe;
  $product->seller_id = Auth::user()->id;
  $product->save();
  foreach ($shippingoptions as $opt) {
    $so = new ShippingOption();
    $so->product_id = $product->id;
    $so->desc = $opt['desc'];
    $so->days = $opt['days'];
    $so->price = $opt['price'];
    $so->save();
  }
  session()->flash('successmessage','Product successfully        created');
  return redirect()->route('products');
}

function DuplicateProductPost($uniqueid, Request $request){
      $product = Product::where('uniqueid',$uniqueid)->first();
      if ($product == null) {
        return redirect()->route('products');
      }
      if (Auth::user()->id !== $product->seller->id) {
        return redirect()->route('products');
      }
      $newProduct = $product->replicate();
      $newProduct->uniqueid = random_int(10000, 99999);
      $newProduct->save();
      session()->flash('successmessage','Product successfully duplicated');
      return redirect()->route('products');
    }

Any help will be highly appreciated

Thanks

via Chebli Mohamed