Creating Products

 // Create a new product
 $product = new Product();
  
 // Identify the product by your unique identifier, etc.
 $product->setmerchantProductId('12345'); //SKU, Database ID, etc
  
 // This becomes transaction line item description if the 
 // product is used for an autobill, so this must be set 
 // to some meaningful string 
 $product->setDescription('Online subscription with video access'); 
  
 $product->setPreNotifyDays(7);
 $product->setStatus('Active');
 $product->setDefaultBillingPlan($billing_plan); 
    //From a previous update or fetch
  
 $product->merchantEntitlementIds[0] = 
    (new MerchantEntitlementId 
       id => 'Video Only',
       description => 'Video access'));
  
 $response = $product->update(DuplicateBehavior::SucceedIgnore);
  
 if($response['returnCode'] == 200) {
    print "ok\n";
    $prodVid = $product->getVID(); 
       // capture the product VID for later use
 }